New york November 1st 1819 Lecture Book- Robert C Wood  November 1st- Dr. Hosack's Introductory Lecture an Eulogy on Dr. Hugh Williamson. November 2d- Dr. Macneven's Introductory Lecture on Chemistry & Materia Medica, in which he in part, revives the exploded doctrine of the Humoral Pathology, and maintains that all medicine act through the medium of the circulating system he considers the doctrine of Sympathy as untenable, and adduces many facts, showing that medicines to be efficient must enter the Circulation, he mentions the singular fact, that by a frequent use of the Nitrate of silver, many delicate women have had their complexions changed to a black colour, especially their face and hands which were most exposed to the air; he notices the fact that many animals eat vegetable substances with impunity which prove mortal to man, he mentions the Colchicum as a remedy for gout, which he says is generally the consequence of an impaired state of the digestive and assimilative organs, he notices the different effects which Vegetables of the same class, and whose sensible qualities are similar have on the constitution, he closes his Lecture with a brief history of Chemistry, and its intimate connexion with the science of Medicine.- November 3d- Dr. Mitchells Introductory Lecture on Natural History - he commences his lecture by dividing knowledge into three branches, Physics Ethics and Dialectics, by Physics he means those laws relating to Matter, by Ethics those laws which regulate the moral conduct of men, and by Dialectics those laws of language whether oral or written by which the intercourse between men is maintained, Matter is subject to Mechanical & Chemical Laws, he considers the air in which we live as compounded of solar, sidereal, and terrene qualities, and that Epidemics are dependent on certain constitutions of the air with which we are unacquainted, he takes a cursory view of the Planetary system, of the effects of heat, light and colour as derived from the sun, and of the influence of the moon on the tides, and on the human body, in which he mentions Dr. Mead's Treatise on the influence of the moon as of great value. he displays many specimens of Organic remains showing the changes which the terrestrial globe undergoes, also many bones of different species of Animals which are now extinct November 4th- Dr. Post's Introductory Lecture on Anatomy Physiology and Surgery, in which he took a short and general view of the human body, the organization and uses of its several parts, the connexion of the brain and nervous system with other parts, the dependence which Surgery has on Anatomy, and the great advantages which a Physician derives from an accurate knowledge of Anatomy in the practic of his profession, he divided his Lecture into three parts, Anatomy or a knowledge of the structure of the body, Physiology or a knowledge of the functions of the different organs, and Pathology or the knowledge of diseases, and their distinctions. Dr. Macneven commences his course of lectures, by pointing out the arrangement necessary for the foundation of Chemical knowledge, which consists of Observation, Analogy and Experiment. the powers of Matter are Attraction, Gravitation and Cohesion, Chemical Affinity can only take place between parts of a dissimilar character, which form a tertium quid different both from the menstruum and the thing changed. Salts to undergo Chrystallization must be in a previous state of solution, and their distinction is determined by the different forms they assume, the aggregation of their parts is more regular if the operation of Chrystallization is performed slowly, to obtain them of the greatest purity a double solution and rechrystallization are necessary, some chrystals are only obtained by Caloric, as the Chrystals of Sulphur for instance which adhere to the rides of the crucible. In chrystallization the water taken up is almost equal to the base of the salt, the efflorescence of salts is owing to the exposure to the air, then deliquescence is owing to their attraction for water, salts are kept fluid by their exclusion from the air, then exposure to the air condensing them into a smaller space by its pressure and causing them to chrystallize, Light hastens Chrystallization. November 5th- Dr. Post commences his course of Lectures On Anatomy by a description of the nature and property of Bones, their component parts, uses, colours, forms &c. he divides bones into Cylindrical, convex and concave and irregular classes, and assigns reasons for their shapes, he displays many specimens of ossified glands, as of the mesentery &c Bones are sensible parts as they are vascular, nervous, and are capable of regenerating themselves with the exception of the teeth which are provided with enamel to protect them from the air, he concludes with showing the absolute necessity of a critical knowledge of Anatomy - Dr. Hammonds Introductory Lecture on the Clinical Practice of Physic, in which he descouted on the duties of a Physician, painted out the advantages of Clinical instruction, noticed the several Hospitals in the city, then object, their internal regulations, and their subserviency to the practical information of the Clinical student, In the course of his lecture, he shewed the uselessness of great scientific attainments, when unapplied to practical purposes, or when made instrumental in the promotion of theoretical and favorite opninions. At the conclusion of his lecture he related the commencement and progress of the disease which terminated in the death of Dr. DeWitt. Dr. Macneven's Lecture - Common salt chyrstallizes in tubes, Nitre in six sided prisms, Sulphate of Magnesia in four sided prisms, their different forms necessary to be known to distinguish them. Goniometer an instrument to meausure Chrystalls - When Attraction takes place between dissimilar parts it is called Chemical attraction or Affinity. Some solids united together become fluid, and some fluids united together become solid, this is a strong instance of Chemical action. The Sulphur Potassx is a very mild purgative and yet its compounds are powerful caustics. Infusion of Litmus added to an Alheli a test of vegetable matter. One effect of Chemical action is to alter the specific gravity of bodies, it also changes their temperature. Minute division accelerates Chemical Affinity by exposing more surfaces to action. Substances passes different degrees of Affinity owing to their various combinations. Decomposition is caused by the greater attraction for particles of another body, the affinity being greater between the two substances, than their own particles. November 6th- Dr Post's Lecture, Bones are possessed of Elasticity to prevent injuries as in falling from great height &c. they are made hollow to render them lighter, and to make their surfaces larger, the ends of bones are made larger for the attachments of ligaments &c. the foramina in bones are for the transmission of Arteries, nerves &c No transudation ever takes place in a living body, Bones are divided into compact, spongy and reticular parts, their component parts, are earth and animal matter, animal matter consists of gelatin and cartilage, Acids destroy the earth and fire the Animal matter. Dr. Post relates a very striking case of Mollities Ossium, he was called to see a man in the morning who the evening before was walking about his room apparently very well, in the course of the night he awoke with a violent pain in this thigh, which continued until morning when it subsided, Upon examination. Dr. Post found that the limb was distorted, almost at right angles, and that he could move it in all directions without exciting the least pain, Upon dissecting the limb after the man's decease it was found that a complete absorption of the bone had taken place except in a few places where a few spicula of bone was found, and from the flexibility of the limb when first examined it seems that this absorption must have taken place in one night. Bones are vascular their arteries are divisible into three orders. the Medullary arteries, the arteries of the Periosteum, and the Cellular arteries.- Dr. Mott's Introductory Lecture on the Principles & the Practice of Surgery, he commenced by dividing his subject into three parts. Anatomy, or a general knowledge of the human system. Surgical Anatomy or a knowledge of the connexion which exists between different parts of the body, and Pathological Anatomy or a knowledge of parts when in a morbid state, he made many remarks shewing the mutual connexion and dependence which subsist between Physic and Surgery, and the necessity for a Physician to acquire a competent knowledge of both he concluded his Lecture by a few observations on Amputation in cases of gun shot wounds he mentioned the opinion of John Hunter which was, that in all cases of gun shot wounds, Amputation should be deferred until the symptomatic fever had subsided, maintaining that the operation must necessarily increase the fever, this opinion he endeavours to controvert, by recommending the performance of the operation before the Symptomatic fever has supervened, and quotes many authorities, to establish the superiority of the practice of immediate amputation - November 8th Dr. Post's Lecture. The cavities of the bones are lined with a membrane containing Marrow. The cells of fat do not communicate with each other if they did it would settle in the lower parts of the body as in Anasarca. There is a communication between the lungs and the cavities of the bones in [cross out] birds by which their cavities are filled with air, and their specific gravities decreased Dr. Post says the opinion that the oil of bones is to give tenacity and strength to them is fallacious, he thinks we are unacquainted with its uses, Bones are of a fibrous nature, which fibres are formed into lamella. Bones have absorbents which is proved by exfoliation &c. he says that wherever there are veins there are absorbents, X Bones have nerves entering into their constitutions consequently they have feeling, tho' it is not communicable to the mind X The features of bones consist in their eminences &c. Epiphysis consist of loose pieces of bone at the articulations, when they unite they are called Apophyses - The Periosteum is a firm compact membrane immediately investing the bones, and is the medium of communication between the bones, and other parts of the body on the head it is called pericranium and on the ligaments perichordrium. Dr Francis's Introductory Lecture on the Institutes of Medicine and on Medical Jurisprudence, on which he reviewed the use and progress of learning and its present state, the effect which it has on the human mind and the necessity there is, that Literacy Institutions should be under the protection and patronage of government, he noticed the importance of Medical Jurisprudence, and the great interests which it often involves detailed the motives which should govern the public and private character of a Physician and cautioned us in our attendance on the poor, in curing a consumption of the body not to cause a consumption of the purse. The Lecture throughout displayed his historic research, Classical erudition and philanthropic feelings. Dr Macneven's Lecture, Heat and affinity are the two processes by which everything is formed, Affinity varies in different bodies. The force of Affinity is mortified by the relative proportions of the compounds. Heat is a modyfying power, it expand bodies and diminishes cohesion. When the aggregation of bodies is strong, solid bodies will not act on each other, but must be fused, Gases are opposed to Chemical Affinity as they repel each other Electricity also owing to its repellent properties is opposed to Affinity. The Specific gravity of bodies influences their Affinity, as in water and oil. Precipitation is caused by the specific gravity of the precipitate, Compression hastens combination, as in gases, Carbonate of lime has been melted by strong compression in an iron cylinder. The laws of Affinity in bodies are their combination, cohesion, temperature, State of Electricity, Specific Gravity, and Compressibility - When two bodies have received as much as possible of each others properties, it is called Saturation. Acids turn Vegetable substances red. Affinity is governed by definite laws, 68 parts of Muriatic Acid will saturate 100 parts of Potash but it will require 100 parts of Sulphuric Acid. That process by which the component parts of bodies are separated, is called Analysis, that process by which their parts are recompounded is called Synthesis. November 9th- Dr. Post's Lecture - The use of the Periosteum is to protect the bones, to prevent friction on the bones and for the attachment of ligaments &c Aneurisms often destroy bones by their pressure. This membrane in its natural state is nearly insensible but when diseased it is exquisitely sensible. Inflamn. of this membrane terminates in sloughing. It is of a ligamentous nature and extremely obnoxious to Veneral Affections, as nodes which begin in this membrane, and afterwards enlarge the bones. It is worthy of remark says Dr. Post, that nodes are situated on those bones nearest the skin, he recommends Blistering for their cure Cartilage is a dense white substance, placed at the ends and between bones to prevent their friction, they are of a fibrous structure. Dr. Post divides them in the following manner. 1st- Temporary Cartilages, which are in lieu of bone 2d. Articular Cartilages, or such as admit of motion. 3d- Interosseous Cartilages, or those placed between bones as in the ribs and sternum. 4th- Moveable Cartilages as in the knee joint &c. 5th. Cartilages which are flexible and form figures as in the nose and ears. 6th The morbid formed Cartilages as in the Spleen, testicles, and other glands - 7th Spurious Cartilages or those which form at the two ends of a fractured bone. 8th- Ligamentous Cartilages, or those uniting the vertebra together which are very elastic, Articulations are those parts of the body which admit of motion, Connexions are when the articulations do not admit of motion - When the articulation is in a deep cavity is is called Anathradica, when the cavity is superficial Anathradica. When both ends of the joint move as in the arm it is called Ginglymus, The connection between the bones of the head is called Sutura, when two parts are in contact Harmonica and when one bone is driven into another as in the teeth Gomphosis. Ligaments connect bones together, some are elastic, and some inelastic, those which are elastic admit of motion, Capsular Ligaments are inelastic - Dr. Mitchell's Lecture - He commences his lecture by laying it down as an axiom that the ultimate particles of Matter are solid and impenetrable that it is resolvable into atoms, and that in Chemical action, they impinge on each other, but do not absolutely unite. There is no such thing as contact in the particles of Matter. Baxter in his work on the immateriality of this soul advances this theory, that Matter consists of ultimate particles in the form of bricks, and that the bricks are cemented together by immaterial mortar- Boscovich's theory is, that Matter consists of Mathematical points which have no parts, that these points are surrounded with repulsive powers, also with a sphere of attraction which draws them as near as the repulsive power of the points will admit. This latter theory Dr. Mitchel adopts and says that Matter is governed by Attractive and Repulsive laws. Bodies are divisible into Mineral. Vegetable and Animal classes - Minerals are preventable by Caloric, Magnetism &c, the forms of Matter in Minerals are symmetrical, Chyrstals are an example of organization without life.- Vegetables are of vital organization, nourished by fluids and gases. The forms of matter in Minerals are similar - The lower species of Animals are distinguished from Vegetables, by their greater Irritability as the Polypus &c.- Dr. Mitchell displayed specimens from the Animal and Vegetable Kingdoms - Dr. Macneven's Lecture. Those bodies which do not possess ponderosity are the following, the Luminous fluid, Caloric or the heat making fluid, the Magnetic fluid, and the Electric fluid. Caloric is contained in all bodies in different proportions We determine the heat of a body by our own temperature. Heat always tends to an equilibrium in all bodies, it is elastic and dilatable, invisible, and of great tenuity, as it penetrates all bodies, the propagation of heat varies in different bodies, the heavy metals are the best conductors. liquids are very bad conductors, gases are non conductors. Heat always ascends, as is seen in boiling water, the bubbles arising from the bottom of the vessel in consequence of their specific weight The following experiment was made by Dr. Macneven, he put a coloured fluid into the bottom of a glass vessel, and afterwards carefully added some water, the fluids were entirely separate, he then applied the upper part of the vessel, in which was the water to a lamp untill it boiled, and yet it was not at all coloured, he then applied the lower part of the vessel which contained the coloured matter to the heat of the lamp, and immediately, the colouring matter began to diffuse itself through the water. The application of this is very easy, wherever the heat is applied, the fluid is made specifically lighter and consequently ascends - The temperature of the atmosphere is highest near the surface of the ground and gradually becomes lower as we recede from the ground. Caloric causes expansion in all bodies, unless prevented by compression, Gases expand more than fluids, and fluids more than solids. Tho' the specific gravities of gases differ, yet they all expand in equal degrees of temperature. Mercury possesses great powers of expansion. November 10th- Dr. Post's Lecture. The ligaments between the os occipitis and the spinal processes are elastic Synovia or that fluid which lubricates the joints is of a brownish colour, viscid and consists of water, albumen, and soda. Dr. Monro's opinion that there are synovial glands is incorrect, it is secreted by the membrane of the Capsular ligaments, in the same manner as the pleura secretes a fluid. Capsular or Bursal ligaments are bags which surround the joints and contribute to their strength, they are inelastic. The Restraining ligaments are those which prevent motion. The Crucial ligaments are those which cross each other, as in the thigh. The Lateral ligaments are those on the sides of joints - The Interosseal ligaments are those between bones in the tibia and fibula for instance The Annular ligaments are those which surround joints, confining the motion of tendons and muscles as on the wrist. Saccula or bursa mucosa are bags, surrounding tendons to prevent friction of the bones. Cartilages precede the formation of bone. As soon as the formation of parts is manifest. Ossification is discernible. The ossification of ribs is completed in the third month, as they are necessary to prevent compression on the organs of circulation, the Clavicle also is soon formed to protect the arteries which nourish the superior extremities. Bones are formed from center of ossification. The secretion of earthy and animal matter constituting bone is made by vasa vasorum - Dr. Post relates a case wherein ulceration of the bowels was induced by an ossified mesenteric gland, causing the death of the patient. Dr. Mitchell's Lecture - Zoology is that science which treats of Animals - Linneus divided Animals into six Classes 1st Mammalia. 2d- Aves. 3d- Pisces. 4th- Amphibia. 5th- Insecta, and 5th- Vermes. 1st Mammalia are those animals which are provided with breasts to suckle their young, have a pulmonary circulation and warm red blood. 2d. Aves are oviparous, have a pulmonary circulation warm red blood, and feathers. 3d Pisces have no lungs but gills which supply air from the element in which they live, their blood is of the same temperature as the water in which they exist, they are covered with squamae. 4th Amphibia exist either in water or on land, they have generally lungs and cold red blood as lizards, snakes, &c. 5th- Insecta (from in & seco) breathe through holes or Stigmata in their skin which is a catachractous or jointed mailed covering, this hard coat serves for the attachment of muscles &c. 6th- Vermes. Under this class were placed all those which did not come under the above heads, and which of course consisted of many varities. Cuvier in his system of Zoology divided Animals into 4 Sections, containing 19 Classes - Section 1st- Vertebrated Animals or those animals which have back bones. viz 1st- Mammalia. 2d- Birds. 3d- Fishes. 4th- Reptiles - the description of these has already been given in the Linnean system the other 15 classes are composed of those animals which in the Linnean system came under the general head of Vermes. Section 2d. Moluscous Animals, or those which are of a soft organization, consisting. 5th- Cephalapodes, or those which have their feet or organs of motion on the head. 6th- Terepodes or those which have their organs of motion in the form of wings. 7th- Gastropodes, or those which have their locomotive organs on their bellies, as in those shell fish whose shells are univalve. 8th- Acepholous or those fish which have no heads, and which are bivalve, as the clam and oyster. 9th Branchiopodes, or those which have gills attached to the outside of their bodies, and whose shells are multivalve. 10th- Cerhopodes or those which have their feet of a curled form as the barnacle &c - Dr. Macneven's Lecture on Materia Medica. Substances have different degrees of Affinity for different organs of the body, every part is evolved with a peculiar irritability, the excitability also varies, Medicines have peculiar properties, and modes of action. 1st- Remedies of the Chylopoctic system - Tonics increase the contractile force of the animal fibre and strengthen the tone of the stomach and intestinal canal. Bitters are in general tonic. Astringents increase the contractile force of the solids by shortening their fibres, and rendering them more compact. The Physical cause of Astringency is a proximate principle. Astringency cannot be determined by the taste as many substances act on the stomach and intestines which exert no such power on the tongue, owing to their different affinities. Hemorrhages arise from Plethora and weakness. Astringents are indicated in the last. Astringents are of use in gout by strengthening the digestive powers. Bitters and Astringents are indicated in muscular debility. Aromatics and Alkohol which are tonic are indicated in low fevers, nervous affections, scurvy, and scrofula. A regular diet necessary to be observed by Convalescents, they should also drink but little, as it dilutes the gastric fluid and impairs digestion. The warm and cold baths are both tonic, the warm bath is stimulant and useful in Chronic Rheumatism. The cold bath reduces the temperature of the body - Exercise both active and passive is tonic. November 11th Dr. Post's Lecture. The body is divisible into head, trunk, and extremities, the extremities into superior and inferior, the trunk into the neck, chest, and loins, the vertebrae are in the form of two pyramids, they are divided into Cervical, Dorsal and Lumbal, have many foramina, and are of a spongy structure internally, each vertebra has 7 processes, the spinous process projecting immediately backwards 2 lateral or transverse processes, 2 superior and 2 inferior articulating processes to join them to the other vertebrae, these processes serve for the attachment of ligaments &c. and act as levers. The cervical vertebrae are small, have holes for the passage of the vertebral artery, and their canals are triangular. The dorsal vertebrae have their spinous process triangular, their canal rounder, and lateral processes stronger, the ribs are connected connected with these vertebrae by Capsular ligaments. The Lumbal vertebrae have their lateral processes longer. The Vertebrae are united together by a Ligaments Cartilaginous substance, and by Capsular ligaments. Dr. Mitchell's Lecture. Curvier's Classification - The two first Sections were considered in the former lecture. Section 3d- Jointed or Articulated Animals. 11th- Annalides or those in the form of rings, as worms &c. 12th- Crustaceans, as Crabs, and Lobsters. 13th- Arachnides as spiders &c. 14th- Insects, the same as those described in the Linnean system with the exception of the three preceding species. These animals are distinguished by their antenna and by their metamorphosis, their changes are the following. 1st- An egg. 2d- A worm or caterpillar - 3d- A Chysellis, or that torpid state which precedes the last change 4th- A Butterfly which was considered by the Greeks an emblem of the soul. Section 4th- The Radiary Animals, or those which have radiated limbs in pairs. 15th. Sea urchins, crustaceous animals. 16th-Intestinal worms, as ascarids &c. These animals infest the body, and have been found in the Stomach, liver, lungs, brain, &c - 17th- Sea-nettles. These are transparent, capable of producing light, and have little calorie. 18th- Polyps or Polypuses, these are found at the bottom of the sea, and their remains often make rocks and islands, they have many mouths and but one stomach. 19th- Infusory Animals. These are found in vegetable infusions, in infusions of tea, pepper and cinnamon, and in all liquids. These animals gave rise to the Animalcular theory of diseases. La'Mark in his system of Zoology divided Animals into three Sections, and fourteen Classes. Section 1st- Apathic Animals or those which have no nervous system, or organs of sense. 1st- Infusores. 2d- Polyps. 3d- Radiaries. 4th- Vermes. Instead of a nervous system he supposed the muscles endued with a vis insita to excute the motions of the second division called Sentient Animals 5th- Insects. 6th- Arachnides. 7th- Crustaceons. 8th- Annelides. 9th- Centipedes. 10th- Molluscous. Section 3d- Intelligent Animals or those whose brains are cased in a bony shell, and who have Vertebrae or a chain of bones forming a spine. There are 4 Classes of these 11th- Fish. 12th Reptiles. 13th- Birds, and 14th- Sucklers or Mammalia. Dr. Macneven's Lecture. Thermometers are of three kinds Pyrometers, or those which resist fire, and are made of Platina or day. the Thermometer containing fluids, and the air Thermometer, Mercury is more expansive than any other substance and on that account is generally used for Thermometers, it freezes at 40 below 0 Fahrenheit. The sensibility of Thermometers depends on the smallness of their tubes, and the small quantity of Mercury they contain. The freezing point is 32. and the boiling point 212. Fahrenheit. The Thermometer used at present in Europe is called the Centigrade, because there are 100 degrees between the freezing and boiling points. Caloric escapes two different ways, either by passing through the air without decomposition, or by being conducted thro' other bodies, that property of heat of separating from bodies is called the tension of Caloric. To prove the reflexion of heat the following experiment was made, two highly polished plates of tin were placed at several yards distance directly opposite a thermometer was placed at a few inches from one of the plates and near the other a lighted candle was placed, the rays of heat and light were reflected from one to the other, and the mercury in the Thermometer which was at 66. the temperature of the room rose in a minute to 80. by placing some coals before the plate, the heat in the other plate became so intense as to light a match at some distance. To separate heat from light the following experiment was made, some burning coals were placed before one of the plates as in the preceding experiment, and a thermometer placed very near the other plate, between the two plates a plane of glass was interposed, the rays of light passed thro' as appeared by the resplendency of the other plate, but the rays of heat were arrested by the glass, as the Thermometer was not at all affected. Polished substances are more refractive than others. November 12th- Dr. Post's Lecture. The centre of gravity is anterior to the spine, the spine has several curvatures its use is fourfold. 1st- to support the weight of the body. 2d- for muscular attachment. 3d- to contain the spinal marrow which it protects, and 4th. to allow of motion it admits of flexion, extension, lateral and rotatory motion it is liable to all the affections to which other bones are subject, as fracture, dislocation &c. dislocation of the vertebra is always attended with fracture except in the first vertebra. All fractures of the vertebra are eventually fatal. Concussion is followed by paralysis and inflam- which is to be remedied by venesection, low living &c. Curvatures of the spine proceed from, different causes one cause of curvature is from a softness of the bones, as in rickets, these curvatures are in a lateral direction, as the processes prevent them from bending forwards or backwards. Dr. Post recommends warm and cold bathing in rickets. Distortions of the spine often proceed from long continued postures, as in some particular employments. Another cause of curvature of the spine is a scrofulous habit to this curvature children are very subjects, it never taken place after adult age, the spine is bent forwards in this disease, owing to the ulceration or destruction of some of the vertebra. The first symptom of this complaint is an inability to use the lower extremities afterwards a total inability to walk, joined with a pain about the knee &c. Dr. Mitchell's Lecture - Vertebrated Animals. The vertebra of a testreds or tortoise consists of one piece which runs along the shell. The shell is divided into different parts called the marginal and central pannels, and is connected by two pieces of shell to the lower part called the sternum. The vertebrae in cartilaginous fish are divided into joints, as in the shark are composed of a long cartilaginous matter, and have no canal for the spinal marrow, in lieu of processes, they are provided with holes in the vertebra for the attachment of muscles. In bony fish the vertebra have processes to form a junction with the ribs and a canal for the spinal marrow, which causes them to possess sensation and voluntary motion, there are two bones in the tal of fishes as a substitute for posterior extremities. Dr. Mitchell showed a specimen of the birds called waders with a very long neck and legs. Dr. Macneven's Lecture. The following experiment was made to show the different degrees of reflexion which substances possess 2 tin plates were placed opposite to each other, a tube which had four equal square sides, was filled with water heated to 200 degrees of Fahrenheit, one of the sides of the tube was black one very bright, and one very much scratched it was placed in a grate opposite to one of the reflection, in the other was placed a thermometer which stood at 64 by exposing the black surface it rose to 67 in a few minutes by exposing the rough surface it soon fell rough surfaces absorb more heat than polished ones black bodies have more emissive powers than any others. Reflexion is superficial the power of emission is always equal to the power of absorption, points in a body are favourable to emission. All bodies tend to an equilibrium in heat when bodies are of the same temperature absorption and emission are equal the hotter body radiates more, the colder absorbs more. The mean temperature of the earth varies but little. Caverns in cold countries appear warm and in warm countries cold which is owing to the between their temperature, and that of the external atmosphere. One of the effects of Caloric is that of changing the form of bodies. Bodies possess a latent heat, so called because it has no sensible effect on the Thermometer yet ice can be melted without changing its temperature by giving out its latent heat. Liquids evolve heat when assuming a solid form thus the winter season is rendered more temperature when much ice is formed, as the evolved heat is added to that of the atmosphere. November 13th- Dr. Post's Lecture. The most general and successful mode of treatment in curvatures and other diseases of the spine is the establishment of issues as near the seat of disease as possible two years elapse sometimes before a cure can be effected. Anchylosis is that process by which bony matter is deposited between two joints, depriving them of their natural motion, and is the consequence of disease. The pelvis is composed of the os ilium ischium, pubis and coccygis. The os ilium forms the upper and lateral part of the pelvis, the spine of the os ilium is on the upper part, the outer surface of the ilium is called the dorsum, the ischium is the bone on which we rest when sitting, the biceps muscle, the semi-membranosus and semitendinosus arise from the tuberosity of the os ischium In the operation of the Stone, we cut between this tuberosity and the anus. A very large foramen is situated between the os pubis and os ischium, from which hold the obturator externus and internus muscles arise. Dr. Mitchell's Lecture. Linneus divides the Class Mammalia into 7 orders viz. 1st- Primates, or those animals which have a very complicated organization, a large portion of encephalon, are intellectual, and have sucking organs on the breast as man, the ape, baboon, monkey and bats. These have a full set of teeth. The distinction of the order is divided from the teeth and claws 3d- Ferae, or beasts of prey, these are carnivorous animals, and have sharp teeth to seize and lacerate their prey. Of this class are the lion, tiger, dog, and cat. 2d- Bruta, as the elephant, this order is always without fore teeth. *These two orders are here misplaced, the Bruta forming the second order as expressed by the figures.* 4th- Glires the animals of this order have two upper and two lower teeth, a full sett of grinders but no canine teeth, as the squirrel, mouse &c. 5th- Pecora, or ruminant animals. These are herbivorous, have four stomachs, and no teeth in the upper jaw except the grinders. Of this class are horned cattle. 6th- Belluae This order includes those animals, not belonging to the five preceding orders nor to the succeeding one as the horse &c. 7th- Ceta. These animals, have a pulmonary circulation a double heart, mammae to suckle their young, and a penis to perform the act of generation as the whale &c. Dr. Macneven's Lecture. Tonics are stimulant medicines which produce durable effects they are applicable in the feeble forms of disease. The following rules are to be observed in their use. 1st- To begin with small doses, with some exceptions as in Typhus some Neuroses &c. 2d. Not to combine many tonics in one prescription but always to keep some in reserve. 3d- When the excitability of the stomach is worn out to introduces them into the [stomach] body by the skin. 4th- To endeavour to graduate the Medicine to the state of excitability of the system. The Cinchona officinalis grows in South America, there are three species used in practice, the pale, red, and yellow, the pale is more aromatic, and bitter, the red is the most astringent and efficacious, the pale is often rejected by the stomach Bark produces very few sensible effects. Intermittents in their commencement are often attended with inflammatory symptoms, and in the cold stage, obstructions are sometimes formed. In this situation Bark would be inadmissible as it would increase the fever, and excite pain in the obstructed viscera, but Venosect and Mercurial purges should be the remedies. Bark is generally given in the quantity of an ounce in 24 hours, but where the indications for its use are strong it should be given in as great quantities as the Stomach will bear joined with some aromatic as the Snake root, it should be given in substance when practicable, it is given in remittent fevers. In continued fevers as the Typhus which originates from Marsh miasmata. Mercury and diaphoretics with wine are preferable to the bark.- November 15th- Dr. Post's Lecture. The sacrum is triangular, the posterior surface convex and irregular, there are four foramina on each side for the passage of nerves &c. it has spinous processes, it is divided into its superior part, its bore and apex, the articulation is the same as in the vertebra, it has an appendage called the coccyx, there are four pair of sacral nerves passing thro' the foramina of the sacrum. The spine is liable to a disease called the Spina Bifida, which is a collection of water in the dura mata membrane surrounding the medulla spinalis, forming a serous tumor which causes a derangement of the nerves in the sac. It is sometimes an independent disease sometimes combined with Hydrocephalus, it is generally mortal but has sometimes been cured by Mr. Cooper by puncture, evacuating the water by degrees, and by gradual pressure on the prominent sac. The os coccygis is composed of four pieces, which are of different sizes, it has ligaments which connect it to the sacrum Parturition is sometimes impeded by an anchylosis of this bone it is sometimes fractured by accidents and in parturition, the form of the pelvis is elliptical, the greatest diameter is from side to side, the two ischia and the coccyx form the projecting points of the lower part of the pelvis, the pelvis of the female is larger than that of the male, it is subject to great deformity from mollities and curvature, the division of the symphisis pubis has been practised, but it is of little use as the ligaments prevent the bones from separating to any distance, the Cesarean operation is sometimes resorted it. In extra uterine fetuses an incision is made thro' the parietes of the abdomen to extract them. Dr. Mitchell's Lecture. Cuvier divides the Mammalia into 8 orders. 1st Bimanes or two hands as man alone. 2d- Quadrumanes or there who have four hands or extremities as Monkeys &c. 3d- Carnassiers or beasts of prey and Masupiaux or those animals, the females of which have pouches on the outside of their bellies. 4th Rougems or knawers as rats, mice &c. 5th- Edenter or these without teeth. 6th- Pachydermes or those animals which have rough skins as the elephant or they are sometimes called Sumenta or beasts of burden. 7th- Ruminants, or those which chew the cud, they have four stomachs. 1st- The Rumen or that organ which masticates the food. 2d- The Reticulum which returns the food to the mouth. 3d- The Omasus which receives the cud, and further masticates the food. 4th- the Abomasus which contains the gastric fluid, and completes the digestion. 8th- The Cetacies, corresponding to the Linnean system. The teeth of animals are for their nourishment and defense, some animals are without teeth as the Edentes. There are three sorts of teeth. The incisores, the canine or lansing teeth, and the molares or grinders. The Order of Primates is divided into Genera, the Primates, have four incisors, and two pectoral teats. 1st- Homo, distinguished by his erect attitude, two hands, feet broad and flat, and by the organization of his body. The cerebrum is larger in man than any other animal, he is destitute of the ligamentum suspensorium, which supports the head of animals, and which proves that man could never have been a quadruped - Dr. Macneven's Lecture. Most of the modern discoveries are owing to the discovery of the laws of heat. There are two kinds of heat. Sensible heat or that which produces effects cognizable to the senses, and latent heat, or that which produces no sensible effects. The Sulphate of Soda and fresh fallen snow will reduce the Thermometer to 0 owing to their great affinity for each other. Freezing mixtures are generally formed of chrystallized salts, which contain a great quantity of frozen water which extracts the Caloric. They will freeze Mercury. Bodies assuming a solid form evolve heat, and bodies assuming a fluid form absorb heat. Water boils at 212. Ether at 98. Atmospheric pressure restrains evaporation. Steam contains no greater quantity of heat than boiling water which is proved by placing a Thermometer in boiling water and the steam arising from it. Gases expand by adding heat or diminishing pressure. The reason why fluids boil soonest on high mountains, is owing to the less pressure of the atmosphere at their tops. November 16th- Dr. Post's Lecture. The bladder when distended rises above the bones of the pelvis, the thorax is made up of the spine, ribs, sternum, and the cartilages which connect the ribs, the broadest part of the chest is below, the upper surface of the diaphragm is even with the fourth rib, the ribs are twelve in number, there are seven connected with the sternum called the true ribs and five called false ribs. A rib is a curved bone divided into its body and two extremities called its sternal and vertebral extremities the external surface of the ribs is plane, the internal surface convex with a groove in it for the passage of an artery vein and nerve. A rib has an head, tubercle and angle, the tubercle near the extremity for the attachment of the lateral processes of the vertebra, it has a cavity to receive the cartilage of the sternum. The circulation can be stopped by pressing the artery as it passes under the clavicle to supply the superior extremities. The length of the ribs increases from the 1st- to the 7th- or 8th- and then decreases. In inspiration the ribs are drawn upwards by the intercostal muscles, the sternum is thrown forward, and the diaphragm descends, enlarging the capacity of the chest for the admission of the air. In expiration the ribs and sternum fall, the diaphragm ascends from the action of the abdominal muscles, diminishing the capacity of the chest, the function of the seratus posticus superior is to draw down the ribs, the form of the cartilages is very similar to that of the ribs, with which they are connected. Dislocations of the ribs are very rare owing to their great elasticity. The sternum is composed of three pieces the superior, middle and inferior parts, the superior piece resembles an heart in shape and is connected by Cartilage to the clavicle. The inferior part forms the cartilage ensiformis which is sometimes perforated. Dr. Mitchell's Lecture. Genus Homo. In Galli Craniology, the nerves are traced from the organs of sense to the brain, he pretends to know the character of a man from certain [ma??es] on the skull, thus the organ of generation, and the organ of parental fondness are placed behind the occiput, those who have a projector of the frontal bone are apt to receive instruction. Physiognomy is placed within the orbit of the eye &c. Men are divided into Artificial varieties, or those who have Conical and Flat heads. Compression of the skull is practised in some countries, which makes their heads flat. In the South Sea Islands, they disfigure themselves by puncturing the nose and ears for the purpose of wearing ornaments, they also practice tattooing, or puncturing the skin and inserting a colouring matter which is never absorbed. The reason why the rite of circumcision which is cutting of the prepuce was instituted among Christians, was the prevention of diseases to which these parts are subject from uncleaness &c. There is a practice existing among the Hottentots of removing one testicle, the reason unknown. Man is the only Animal whose prepuce is not connected with the belly. Next come the Morbid Varities, as those men who have swellings of the thyroid glands, called the Goiter, which is accompanied with a dullness of the faculties and with [illegible] The Albino's or those whose skins are of a chalky whiteness whose constitutions are delicate, and their eyes are destitute of the pigmentum nissum, which gives them the appearance of red eyes, their sight is very weak. Natural Varieties, among which are the dwarfs or men of small stature as the Labrador and Esquimarux, the giants or men of larger stature as in Patagonial the Hottentots whose women have large sacral bones, and an appendage to the nympha, covering the vulva. The brown race as the Tartars of Asia and America which lead a wandering life. Dr. Macneven's Lecture. Ice is produced by evaporation. Put a small quantity of water into a vessel, and some Ether which will remain on the top by its specific gravity introduce this vessel into an air pump and by producing a vacuum the ether will boil and evaporate, and the water will freeze Some sulphuric acid should be placed in the receive of the air pump which will absorb the evaporated ether. Evaporation is moderated by pressure. Extracts are prepared by evaporation. One gallon of boiling water added to an 100 gallons of cold water will increase the temperature only one degree, but one gallon of water converted into steam and condensed will increase it nine degrees. The sources of heat are the sun and terrestrial bodies. Rays of heat differ from rays of light heat can be separated from bodies by compression and percussion Atmospheric air contains Caloric which was proved by the following experiment, a piston was pressed into a cylinder air tight, which forced the air into so small a compass that fire was produced, the spark being quite luminous to this cause may be referred the accidents which often happen in ramming down guns. The sources of cold are evaporation and the change of form. Light ozydizes bodies, its beams are separable into seven colours by the prism, the red rays are the most refrangible and heating, the violent rays have the greatest chemical power, and are the least refrangible the yellow and green rays reflect most. There are invisible invisible rays which are more heating as is proved by the Thermometer, Certain bodies absorb and retain heat without decomposing it as phosphoric, diamonds, and sea water. Combustion never occurs without the presence of air. November 17th- Dr. Post's Lecture. The ribs are subject to fractures they generally occur from the 5th- downwards. The fracture is known by a yielding of the bone, an acute pain in inspiration, coughing, and bloody expectoration. A crepitur somtimes can be heard. An emphysema sometimes occurs, which extends to the cellular texture of the lungs and over the whole body, it is distinguished by a crackling sensation under the fingers. In cases of fracture the ribs must be kept free from motion by bandages &c. Venesection and blister. The emphysema must be prevented or cured by by cutting down to the rib. The sternum is also liable to fractures. The superior extremity is divided into the shoulder, arm, fore arm, and hand. The shoulder is divided into the scapula and clavicle, the form of the scapula is triangular, its external or dorsal surface is convex in the centre, its internal surface is concave, it has three edges the base, and superior and inferior costa, it has three angles the superior, inferior, and anterior, the glenoid cavity is for the reception of the head of the humerus, the coracoid process arises from the anterior part of the scapula and serves for the attachment of muscles. The clavicle is situated between the scapula and Sternum and keeps them apart, it arises from the coracoid process of the scapula, it is frequently fractured, the mastoid, deltoid, and subclavicus muscles arise from the clavicle, in cases of fracture the shoulder falls, the shoulder must be raised, the bones best in aptatior by position, and compresses put between the ribs and arm, the bones are very seldom placed in perfect opposition Dr. Mitchell's Lecture. Dr. M. related a case of a soldier on Governor's Island who had swallowed five knives and passed them by the intestines, he showed the knives. Dr. M. says that he has a paper which proves that America was discovered 500 years before Columbus was there Beardless men or those having small beards as the Tartars, Chinese, and Malays. Brown race as the American and Asiatic Tartars, and American and Asiatic Malays. In the Fuju Islands there are men who feed on human flesh Govr. Cass also told Dr. M. that there were seven men among the Miamis, Indians who lived upon human flesh The White race arising from the north of where the ark was supposed to rest, near the sources of the Tigris and Euphrates, called the Caucassian or white Arab Sable race, or negro living in the northern parts of Africa and the south coast of the Mediterranean. The Generative varieties, as the mulato &c. The homo ferus or wild man, who has been found in France and in Poland, they are capable of being humanized, and then forgot their former condition. The Simia, in checking those animals next to man, called Quadrumanes, or those which have four hands or extremities, as the ape, monkey &c. - Dr. Macneven's Lecture on Mat. Med. Bark is applicable in rheumatism after the inflamn. fever has been subdued, it should be given however with caution. In arthitic and gouty affect. combined with a weakened state of the digestive organs, as recommended by Sydenham and Gregory. Dr. M. mentioned two cases in which gout had been suspended 2 years by bark. It should be given in all periodical diseases in the intervals of intermission. It is beneficial in confluent small pox where the fever is of the typhoid character. Where tonics are indicated Bark is the best. Erysipelas is generally inflam. in this country, but where it occurs in marshy countries and the constitution is feeble Bark is useful. There are two kinds of Scarlatina. Scarlatina anginosa, and Scarlatina su aligna in the latter which is attended with great debility. Bark is serviceable. Dysentery is a Phlegmasia, but in marshy countries it has intermissions in which case the Bark is indicated. In Scurvy and Menorrhgia Bark combined with Lime water, and iron is very efficacious. In nervous and spasmodic complaints. Epilepsy is very frequent among young people, and is generally owing to congestions in the blood vessels of the brain, but when it is of long continuance tonics are indicated. Chorea has been removed by free purging, but tonics are applicable when it has existed some time. Bark is given in the second stage of Pertussis. Where Asthma is combined with an impaired state of the digestive organs Bark in useful. In the Cachexia as in Consumption where the hectic fever has periodical exacerbations, and in that Consumption where there is no hectic fever, but an emaciated state of the body, dry cough, and sweetish expectoration. Bark is indicated. In Scrofulous constitutions. Bark and Mercury combined acting as an alternative and tonic are valuable remedies, in the last stage also when tumefactions and ulcers are present. Bark combined with Cicuta and also used externally are useful remedies. In Rickets- In foul ulcers the internal use of bark should be combined with the external application of the carrot and charcoal poultices. In Leucorrhea, one kind of which Dr. M supposes to occur from a vitiated secretion of the menstrual fluid, and which is rendered very probable by the fact, that during the disease of Leucorrhea, Menstruation is suppressed. Bark should be given. In Gangrene unaccompanied with inflamn. Bark joined with stimulants as wine, musk, and serpentaria has been found very beneficial, but the employment of blisters in gangrene has in some degree superseded its use. Bark applied externally to the stomach where it could not be given internally has cured chronic diarrhea's and other diseases. November 18th- Dr. Post's Lecture. Fractures of the scapula can only be cured by position, its head is sometimes fractured. The arm is divided into its body and two extremities, its head forms a section of a sphere is covered with cartilage, and rotates in the glenoid cavity there are two tubercles near its head to which are attached the supra spinatus, the infra spinatus, the subscapularis, and the biceps cubit flex or muscles. There is an eminence about its middle caused by the tendon of the deltoid muscle. Two condyles are situated at the lower end of the arm for the attachment of muscles, one joins the radius, the other the ulna. The articulation between the arm and forearm is effected by arthrodia, so called from the cavity being superficial. Dislocations of this bone take place, downwards, backwards, and inwards, the coracoid process prevents its dislocation upwards, they are most frequent downwards, and the symptoms are a cavity under the acromion pain in motion of the arm and the head of the bone being felt in the axilla, to effect its reduction there should be one fixed point for extension as the body, the arm should be raised a little, and a gentle continued extension made and in a recent case when the limb is brought in a proper position the muscles by their contraction will effect the reduction without the aid of either manual or mechanical labour The next most frequent dislocation of this bone is forwards, in which the symptoms are the same except the head of the bone being felt under the pectoralis muscle, the reduction of this luxation is frequently impracticable. When the dislocation takes place backwards, the arm is shortened and the head of the bone is felt on the dorsum of the scapula. The two bones of the forearm are the radius and ulna, the ulna is the longest and largest and has on its upper part a process called the coranoid process, it has also a semilunar cavity, in which a projection of the radius moves and by which motion is performed, the lower extremity of the ulna is small on the inner surface of the ulna is the styloid process. The radius is small at its upper part and large at its lower part, it has also a styloid process at its lower extremity, it has a tubercle on its upper part for the attachment of muscles &c. the ulna performs most of the motion of the arm. Dr. Mitchell's Lecture- The Simia or ape family, 4 teeth in the upper and lower jaw. The Simia are divided into four Sections Section 1st- The tailess or those without tails as the Simia Froglodytes who live in families, the Simia sylvestris or Ourang Outang. the Simia. satyues or Locks and the Simia. lar or long armed ape. Section 2d- The short tailed, as the Simia Nemoustrinae and the Simia Marmon. Section 3d- The long tailed as the Simia. nemeus, the Simia. masiae, and the Simia. diarra. Section 4th- The American monkey, of there are the Sapajours, which have curled tails to suspend themselves from trees, and the Sagoins, or those whose tails are not curled. Lemur with 6 teeth, of these some walk and some have wings similar to parachutes by which they can descend from trees & without injury as the Vespertilio or bat which has wings connecting the superior and inferior extremities, of these are the Vespertilio Vanipyrus, or Vampyre of which such extravagant stories have been told, the Vespertilio Spectrum, so called from its appearing in the night, the Vespertilio Spasma, so called because the right of it in the night has produced spasms. the Vespertilio Amitus the Vespertilio Minanus from its looking like a mouse and the Vespertilio Molopus. It will be recollected that all these belong to the order of Primates, Class Mammalia. Next comes the order Bruta of the Class Mammalia which have no front teeth, and some of them none The Bredipus or Sloth which has six grinders, and is covered with hair. The Mamegaphega an ant eater, which has no teeth, and lives upon ants. The Pladipus which has no front teeth and has flat feet. The Manis or scaly lizard which has scales on its body. The Dizipus or Armadillo which has neither hair or scales but is covered by rings of shell. The Rhinoceros which has a horn or horns on the nose. There are two species, the Rhinoceros, Unicornis, and the Rhinoceros Bicornis, they are found in the south of Asia. The Sophatyron or horned hog. The Elephant which has no front teeth but canine and grinders, it has an elongation of the snout, called proboscis, which serves as an organ of nourishment and defense, it is found in the torrid zones but will live in the temperature zones. There are two species, the Asiatic and the African. The Mastoid so called from the form of the teeth.- Dr. Macneven's Lecture. Simple bodies are divided into six classes Class 1st. The more simple parts as Caloric Lumic, Ozygen, Hydrogen and Nitrogen. Class 2d- The acidifiable bases the most common of which are Nitrogen, Carbon and Sulphur they are composed, that is acids of two substances, the acidyfying and acidified bases, the stronger acids are distinguished by their ending in ic. and the weaker in ous, thus Sulphuric acid is stronger than Sulphurous acid. Class 3d- Metallic substances, which are acted upon by acids, when the metals unite with acids, but do not form an acid, they are called ozides. Class 4th- Earths, some are found in a saline state, they are generally mixed together. Baryter is the most ponderous of the earth. Class 5th- Alkalis, Potassa and Soda are pure vegetable Alkalis. Ammonia is a compound substance Class 6th- The complex parts of simple bodies. Chemical Nomenclature 1 Simple Substances. as the earths & Metals &c. 2 Simple Substances combined with Caloric 3 Simple Substances combined with Ozygen 4 Simp. Subs. united with Ozyg. & Calor. to render them gaseous 5 Simp. Subs. united with acids to form Neutral Salts 6 Simp. Subs. united with other Simple Substances Novemeber 19th- Dr. Post's Lecture. In dislocations of the forearm moderate extension should be made to disengage the coranoid process, the ligaments are lacerated considerable inflamn. and fever supervenes which should be combatted by bleeding &c. the evaporating wash for the inflamn- the joint should be moved after their week, should a thickening of the parts take place apply a blister. When a fracture of the olecranon happens the triceps muscle draws up one part, in this fracture a splint should be placed on the anterior part of the arm to keep it in an extended state, One or both of the bones of the forearm are liable to be fractured, to discover a fracture of the radius which is most frequent take hold of the wrist and rotate it, and a crepitus will be heard, a fracture of the ulna is easily discovered from its superficial position. To effect an union of the fracture bones a splint should be applied under the arm and one on the anterior and back parts of the limb, but none on the upper part, which should be left for the application of cooling washes &c. No bandages should be applied in this fracture, for they would press together the two bones, and the callus might unite them. The hand is divided into three parts, the carpus, metacarpus and fingers, the carpus is made up of 8 bones which are connected by strong ligaments, and have considerable motion among themselves, there are two rows with 4 bones in each, the upper row consists to Scaphodes. 2. Lunare. 3. Cuneiforme. 4. Pisiforme. The lower row consists of 5. Trapezium. 6. Trapzoides. 7. Os. magnum. 8. Muciforme. the first metacarpal bone is attached to the Trapezoides, and the middle metacarpal bone to the Os magnum. The carpus is attached to the ends of the forearm, is convex on its back part, and concave on its under part. The bones of the Metacarpus are divided into a body and two extremities, the lower extremities form a ball and socket joint. The fingers are made up of three bones, they are connected by ginglymoid joints.- Dr. Mitchill's Lecture. 3d Ordo Feroe or wild animals. They have 6 upper teeth. 4 Laniary which are longer than the rest, and their molares are conico - cuspidated or with very sharp points. These are divided into two families the Insect eaters, and the Carnivorous. The Insect eaters of which are the following viz Genus 1st- The Erinaceus, or hedge hog, living upon insects it is covered bristles to defend itself. Genus 2d- The Sorex or Shrew of which there are the following Species. The Uranus a fetid shrew - The Fodieus or water shrew, the Moscus, the Aquaticus, the Ecordatis, the Satisis, the Semispinosus. Genus 3d- The Tolper or Mole of which there are the following Species, the Europea, the Cristata, and the Cerulea. The Carnivorous Family. This family is divided into 3 Orders, the Plantagrades, or those which have flat feet, the Digitgrades or those which walk on their toes and the Amphibious or those which live either on land or in water, Ordo 1o- The Plantgrades. Genus 1st Urous or Bear of these are the following Species. The Ursus Arctos or brown bear of Europe. the Urous Americanus, or black bear of N.A. the Ursus Maritimus or white bear. Genus 2d- The Lotor or Racoon as the Carnivorous, so called from a crab. Genus 3d- The Moles or Badger, as the Canadensis. Genus 4th- The Gulo or Glutton, Genus 5th- The Luscus or Wolverine. Ordo 2o- The Digitgrades. Genus 1st- The Martes or Martin of which there are 4 sub-genua. Sub-genus 1st The Putores. The Furo or Ferret. the Sarmaticus, the Erminia or Ermine. and the Siberica. Sub-genus 2d- the Mustina or Weazel. Sub-genus 3d. the Lutra or Otter Sub-genus 4th- the Mephitis or Skunk. Genus 2d- The Canis or Dog, of these there are the Canis Familiaris a domestic dog, of which there are about 30 varieties. the Lupus or wolf, the Vulpes or fox and the Hyena with others. Genus 3d- The Felis, or Cat- as the Leo or lion the Tigris or tiger, the One, the Leopard, Panther, & Lynx or wild cat Ordo 3d- The Amphibians, as the Phoea or Seals of these there are several Species, as the Sea lion, Sea elephant &c. Dr. Macneven's Lecture. There are 47 simple bodies, the compound are more numerous, of these 7 are very active, as Oxygen, Hydrogen, Sulphur, Carbon, Boron which are simple bodies. Oxygen, Hydrogen and Carbon form vegetable matter. Nitrogen added to these three with sometimes a little Sulphur forms Animal matter. When two simple metals unite it is called an alloy. In all gaseous compounds one must have been solid, except Oxygen and Hydrogen which exist in the air. The Chemical Nomenclature is formed by uniting the names of the elements of a compound, and varying its compounds. A gas is a substance permanently elastic, which distinguishes it from vapour, the weight of atmospheric pressure is 14 lbs upon the square inch. The specific gravity of atmospheric air is 1000, it is used as a standard for weighing other gases. Oxygen weights 11.47. Air is weighed by an instrument in the form of a globe which contains a given quantity of air, and is provided with a stop cork by removing stop cork atmospheric air rushes in and fills it in this state it is weighed, afterwards it is screwed on the air pump on exhausted of air and again weighed which gives the weight of the air. November 20th- Dr. Post's Lecture. The femur which is a cylindrical bone is divided into its head and two extremities, the head of the bone is connected with its body by a neck, on its upper part the great and small Trochanter are situated, it is called so from the muscles which are inserted in it and rotate the limb the great trochanter is covered with a tendon of the gluteus muscle, the psoas magum is inserted in the less trochanter, the linea aspera is a rough line on the concave part of the femur for the attachment of muscles, this bone at the lower part is very large making the two condyles, between which the patella is situated The capsula ligament which surround this joint is very strong Dislocations of the femur at its upper extremity take place in 4 different ways. 1st- Upwards and backwards, when it is thrown on the dorsum ilii. 2d- Upon the thyroid hole. 3d- Downwards and forwards. 4th- Upwards and forwards. In fractures or dislocations we are to judge from the relative situation of parts from the three following especially, the spine of the ilium, the os pubis, and the great trochanter in their natural state When the os femoris is dislocated upwards and backwards, the leg is shortened, the toes turned inward, and the limb fixed Sometimes in consequence or ulceration of the accetabulum, the head of the femur is pressed into the pelvis. Fractures are distinguished from luxations by the mobility of the limb, and by crepitus. Dr. Mitchell's Lecture. Continuation of the Fever. The Marsupiaux or those animals which have bags on their belly The Genus Didelphis or those with double wombs as the Opossum Virginiana of N.A. The Opossum Marsupialis of Cayenne, the Opossum Canivora of Brazil and the Opossum Dyosurus, the Opossum Paramoles or Phalanges of New Holland. Ordo 4th- The Glires, or Roughems, or knawers with 2 front teeth in each jaw, near each other and remote from the grinders: Genus 1st The Hystrix or Porcupine. Genus 2d- The Cavia or Guinea pig. Genus 3d- The Castor or Beaver. Genus 4th- The Mus or Mouse and Rat. Genus 5th- The Actemys. or Marmot. Genus 6th- The Syurus or Squirrels Dr. Macneven's Lecture on Materia Medica. Tonics. Serpentaria is perennial, indigious to Virginia the dried root is aromatic of a pungent taste, the active properties are a bitter resin and essential oil, it is stimulant, tonic, and diaphoretic, it promotes the urinary secretion, it is joined with bark in the typhoid state of fevers, in remittent fevers, it is given in the secondary stages of pleurisy, in protracted intermittents, is used for a gargle in sore throats, in Dyspepsia, it checks bilous vomitings, it is contrained in inflamy. diseases. Prunus Virginiana, a tonic, it is bitter and astringent to the taste, it restrum colliquative sweats, is given in asthma and in chronic stages of dysentery. Angostura Bark is tonic and laxative, and is given in affections of the stomach. Columbo radix is tonic and antiseptic, is given in Cholera where there is a redundance of bile, it removes nausea in the low stages of puerperal fever - Gentian Lutea, the root is generally an ingredient of all bitters, it is given in dyspepsia and gout. Quassia excelsa. this is a very useful bitter. November 22d- Dr. Post's Lecture. Dislocations of the femur should be reduced by fixing the pelvis by bandages between the thighs, and by making extension, the thigh and leg should be flexed to relax the muscles. Fractures of the neck of the femur are distinguished by the crepitus, and greater mobility of the limb In fractures of this limb, it should be placed in an horizontal position, and extension made by means of splints. Dr. P. has only met with one case of a fracture of the neck of the femur, which he cured by keeping the limb in a flexed position. The English surgeons are of opinion that a fracture of this kind never unites, owing to the circulation in the limb being interrupted, the French surgeons are of a contrary opinion. Sometimes the acctabulum, sacrum and ischrum are fractured by falling from a height on the ground - The bones of the leg are three, the tibia, fibula, and patella, the tibia is more or less of a prismatic form and supports the whole weight of the body, it is divided into its body and two extremities, the upper extremity is large, and has two superficial cavities, or glenoid cavities, separated by an eminence, its upper part is rough, and has many foramina it has a tuberosity on its upper part for the insertion of the ligament of the patella, the lower extremity is enlarged for its articulation with the [illegible] in amputation when the bones are divided nea the insertion of the meduallary artery before it ramifies, considerable hemorrhage takes place, the artery must be plugged. The fibula is a small bone large at the two extremities its principal use is to increase the surface of the bone for the attachment of muscles &c. its lower extremity forms the outer surface of the ancle. Dr. Mitchell's Lecture. Continuation of the [illegible]. Genus Myoxcus or Dormouse. Hybernation is derived from Hyberna, winter quarters, and has been applied to animals, many animals pass the winter without taking any food, and are nourished from the absorption of their own fat. Dr. M. contrary to the opinion of philosophers says that white is the warmest colour, and black, the coldest, when not exposed to the rays of the sun, for in that case the body supplies its own heat, and a white colour being of a difficult transmission, the heat is retained, while if it was black the heat would pass off, this is the reason why Animals are clothed in white, in winter, in those countries where the sun does not shine for many months, and also the reason why black people suffer so much from cold. Genus Dypus or jumping mouse - Genus Lepus, or hare and rabbit, some have tails, others are without. Order 5th- Pecora- Ruminants- These have four stomachs, no upper teeth in their front jaw, have six or eight below, which are remote from the grinders, they have hoofed feet and tits in their groins. Genus Camelus or Camel, with a cleft upper lip, there are several species, as the Dromedary &c. and all under the government of man. Genus Moschus or Musk deer which has a bag near the navel containing Muscle and which is used as an antispasmodic. These Genera have no horns- Genus Cervus, or Deer family, which shed their horns every year, and of which there are several Species. Genus Antelope - with annulated horns. Dr. Macneven's Lecture. The action of Oxygen is the most general of all bodies, it never exists separately, but in its most simple state is combined with Caloric and light, it is colourness, tasteless and without smell, when strongly compressed it emits heat, and appears luminous. Carbonic acid gas and Hydrogen when pressed become hot, but does not appear luminous. It unites with every simple body, but the combinations are in various proportions, it forms an essential part of the atmosphere and of water, Respiration cannot be performed without it, and Combustion never takes place without the presence of oxygen. It is generally obtained from black oxyde of Manganese by means of heat. Oxygen has a strong affinity for Caloric, and combined with metallic bodies it forms Oxydes, some oxides are entirely decomposed by heat as the red oxide of mercury Some salts contain Oxygen, and Nitre affords it by a strong heat. Substances weigh less after losing it. The uses of Oxygen gas are extensive, as in supporting respiration &c. This gas was first discovered and investigated by Dr. Priestly in the year 1774, but its various properties have been known only for a few years, it is an acidyfying principle, and is not absorbed by water, other gases are. Combustibles burn with additional splendor in Oxygen gas as is proved by introducing a piece of hot iron, or steel into a vessel filled with this gas which burns with great brilliancy, emitting sparks in all directions A body or its residium rather after combustion is heavier than it was before, its increase of weight is owing to the absorption of Oxygen, An acid is formed by the union of an inflammable base with Oxygen. The products of Oxygen are Oxides, Acids and Alkali's. Flame is luminous gaseous matter, the effect of combustion, though combustion sometimes occurs without flame.- November 23d- Dr. Post's Lecture. The Patella is connected to the knee by a strong ligament, its external surface is convex, the internal is divided into two lateral surfaces, divided by an eminence and applied to the two condyles of the femur upon which they move its upper part is called the apex and its lower part the base. The use of the patella is for the insertion of muscles, that extend the leg, as the rectus femoris, crucus, and the tendons of the vasti interni and externi muscles, which are inserted into its base. Dislocations of the knee joint are very rare, when they do occur, they are generally inwards or outwards, they very seldom take place backwards, owing to the great strength of the crucial ligament, these are easily discovered, and to effect their reduction, the limb should be flexed to relax the muscles, Fractures of the patella are generally transverse, and in 19 cases out of 20 are the effect of muscular action, in these fractures, the base of the bone remains in its natural state but the apex is drawn up by the action of the extensor cruris muscle. the limb should be kept at right angles with the body to relax the extensor cruris muscle, and the inflamn- which supervenes, should subside, which it generally does in 6 or 8 days before bandages are applied, a splint should be applied on the under part of the limb, and after the inflamn. has subsided, bandages should be applied, which are of two kinds, either of which may be used one is a long roller, made to embrace the whole limb to prevent swelling and passed round the knee in the form of a figure of 8, the other is [illegible] of two circular straps, one passed round the lower extremity of the femur the other below the knee and drawn to each other by longitudinal straps which approximate the fractured extremities of the patella, the flexor muscles of the lower extremity are inserted in the tuberosity of the ischium, and are sometimes fatigued by being kept for a long time in an extended position, they will be relieved by gently flexing the leg. Fractures of the patella generally unite by ligament, and 8 weeks should elapse before walking is attempted. Dislocations of the patella are generally inwards or outwards in a lateral direction, and are easily reduced. Dr. Mitchell's Lecture. Continuation of the Pecora. Genus Capia or Goat with hollow horns. In the stomach of one species of the goat stones called Bezoars are found, which consist of the Carbonate of Lime, it is supposed to be an antidote to poisons, if so it must act by absorbing and neutralizing the acid poison. Genus Ovis, with hallow horns, which are filled with a process from the skull. There are many species. Genus Bos or Hine, with hollow horns which are subject to disease as caries, ulceration &c. causing hectic fever, emaciation &c of these there are several species, as the Bos Temus, including all domestic cattle, the Bos. Bison, or American Bison &c. Order 6th- The Belluœ with obtusely truncated front teeth and hoofed feet. Genus Equus or Horse with several Species or the Equus Cabalis or tame horse. the Asinus or Jackass, the Mulus or the Mule, the offspring of the he.ass. and female horse. the Zebra or the striped ass. &c Dr. Macneven's Lecture. The colour of flame depends on the nature of the combustible body. Gunpower burns in vacuo, this is owing to the Nitre which enters into its composition, and which contains Oxygen gas Within these three years three other supporters of combustion have been discovered Iodine, Chlorine and Fluorine. Iodine is obtained from Barilla which is the ashes of marine vegetables or from Soda Barilla contains a great quantity of Sulphate of Soda. Iodine has the following properties, it is of a brownish colour with metallic luster, is soft and pliable, and easily pulverized, is of an acid taste, and evaporates when exposed to the air, it first turns vegetable that are blue, red and then totally destroys the colour, the word Iodine is from the Greek, and signifies purple, which is the colour of its vapour, its vapour is heavier than any of the gases. It is a nonconductor of electricity, it emits heat with some bodies with which it unites, but Potassium is the only body with which it emits heat and light during its union, when Iodine unites with simple bodies, the compound is called an Iodine, the Iodic acid is astringent and sour when mixed with water, it is so heavy that it sinks in concentrated sulphuric acid which is twice the strength of water as quick as lead does in water, it corrodes metallic substances, and is an excellent test of fauna or starch in vegetables, turning the starch which is white to a blue colour. The combination which is formed by the union of a base with Iodic acid is called an Iodate, it loses all its properties by being leapt a year though it is excluded from the air. A heated substance preserves its caloric much longer in vacus than when exposed to the air - November 24th- Dr. Post's Lecture. The foot is composed of three parts the tarsus, metatarsus, and phalanges, there are 7 tarsal bones, the os calcis, astragalus, naviculare, cuboides, and the 3 ossa cuneiforme, the medium, internum, and externum, the os calcis is the largest, and sustains the weight of the body, it has two articulating surfaces with the astragalus, in its posterior part the tendo Achillis is inserted, its inner part is hollowed out for the passage of arteries, nerves and tendons, it is very spongy in its texture. texture. The astragalus is very irregular, and has two surfaces for the articulation of the malleus internus, and externus processes of the tibia, also two under surfaces for its junction with the os calcis. The anterior surface of the os naviculare corresponds to the three ossa cuneiforme, the ossa cuneiforme differ in their size and have posterior and anterior surfaces of articulation, the os cuboides has three surfaces of articulation, on its outer edge it has a groove for the tendon of the peroneus longus muscle, then bones are all connected by very strong ligaments, and have a considerable motion among themselves, the tarsus is convex on its superior part, and concave on its lower part, the number of bones of which it is composed is of service to prevent injuries from falling, and to accommodate the foot to the inequalities of the ground. There are 5 metatarsal bones which are convex on their upper surface, and concave on their under surface the metatarsal bones of the great and little toe are stronger than the others, the three points upon which the body is supported are the os calcis, and the metatarsal bones of the great and little toes, the ancle joint is of the ginglymoid kind, the bones of the toes do not differ from the fingers except in their relative length. Dislocations of the ancle joint commonly occur inwards, very seldom outwards Dislocations of this joint inwards are generally accompanied with fracture of the fibula, as it forms the outer ancle, sometimes the fibula is broken, without a dislocation of this joint. There are two kinds of dislocation, dislocation. the simple and compound. Compound dislocations are generally attended with great consequent inflamnn. and to obviate the injury which the constitution might sustain, some surgeons recommend immediate amputation, but D.P. has had three patients, who recovered from this injury without amputation, by venesection and other means. In fractures of the leg Dr. P. prefers the bent position, that is the thigh should be flexed upon the body, and the leg upon the thigh, a splint should be applied on the under part of the limb. No bandages or splints should be applied untill the inflamnn. has subsided and no danger need be apprehended, as the callus does not begin to unite untill three weeks after the fracture. Dr. Mitchill's Lecture. Continuation of the Belluœ. Genus Hipopptamus, or Water horse, this animal is of an uncouth form. Genus Tapea. Genus Sus or Swine with tusks, as the Sus Scrofa or common hog with many varieties. Scrofula is derived from Scrofa, for in many countries Swine are affected with glandular swellings &c. which was the reason of the origin of the custom among the Jews of not eating the flesh of swine. The Fossil Genus Phaliothereum, of which there are several species. Order 7th- The Cete which are all inhabitants of the water, they have breathing holes in the fore part of the skull, Pectoral fins, no feet, and a horizontal tail, they have no hair or scales but a very smooth skin these animals spout water out of their breathing holes. Genus Monodon, or Sea Unicorn with an elongated snout, these have a single horn on their head. Genus Balaena or Whale with no teeth, but a horny substance in lieu of them. Genus Physeter or Spermaceti Whale with teeth in the lower jaw. Genus Delphinus or Dolphin with teeth in both jaws. Dr. Macneven's Lecture on Mat. Med. Quassia Simarouba astringent and bitter, a valuable remedy in the last stages of Dysentery, a small dose is as effectual as a large one. Croton or Elentheria Cascarilla, of a bitter warm aromatic taste, the bark of which is given in dyspepsia, flatulent colic, diarrhea and the later stages of hectic fever. Humulus Supulus or Hops which is a tonic, diuretic, and narcotic, and used as a substitute for Opium, it is given in paroxysms of gout as a sedative. Stone and Gravel are more rare in countries where cider and acid wines are not drank. Mineral Tonics. Iron is the most abundant mineral production in nature and the most congenial to the human constitution as there is nothing deleterious in it. it answers best when given in small doses, and minutely divided which is the case in mineral waters, it is a powerful tonic, promotes objection, and augments the strength of the muscular fibre, it is given in weak Cencophlymatic habits, chlorosis, gleet, palsy, dyspepsia rickets, and phthisis pulmonalis it must not be given in sanguineous temperaments it is always found in the blood of warm blooded animals. Dr. Chapman is of opinion that it is generated in the blood but Dr. M. says that the animal economy can compound and decompound but not generate the effects of iron are very lasting it is given in all Cacheotic complaints. Purified filings are an excellent remedy in worms, owing to the Hydrogen which they evolve and which is fatal to worms: the sulphate is the most tonic. R. Mur. fer. is an excellent remedy in spasmodic strictures of the urethra. Copper is soluble in its metallic state, the Sulph. Cup. is a powerful tonic, and is given in obstinate intermittents or an injection for gleet, and a detergent in foul ulcers. the Cup. Ammon. is given in Epilepsy, but should not be given in this or other nervous diseases untill purgatives are promised. November 25. Dr Post's Lecture. The head is divided into two parts, the cranium and face the skull is made of two tables with a substance called the diploe between the internal table is sometimes broken without the external being broken, much caution should be used in trepanning as the two tables are sometimes in contact, the cranium consists of 8 bones, the os frontis, os occiputis, 2 ossa tempora, 2 ossa parietalia, os sphenoids, and os ethmoids, these bones are connected by sutures of which these are the coronal, sagittal, squamose, lambdoidal, sphenoidal, and transverse, the ossa triquetra are little bones found between the sutures, which are to be distinguished from fractures the cranium is divided into its upper part or arch, or in its lower part or base the arch is convex on its upper part the anterior part is the sinciput, the posterior part the occiput its top the vertex, and its lateral sides, there is a depression on the os tempora for muscles &c. on the inner part there are depressions or pits for the convolutions of the brain, a groove for the longitudinal sinus of the dura mata, and impressions made by the arteries of the dura mata. The base of the cranium is very irregular, and is divided into its anterior, posterior, and median parts. Dr. Mitchill's Lecture. Herbivorous Cetacea, those have hands by which they can hold their young - Genus Manati - as the Species Trichecus, or mermaid, or Sea man or woman. Genus Dugong, or Indian Wallruss. Fabulous Zoology. 1st Mistaken observes, exaggerating and misinterpreting things, whence Sea-serpents, and Flukers or floating islands, as they were supposed to be. 2d. Lying Travellers. 3d. Poetic inventors, whence, chimeras, gorpus, centaurs, griffins, griffins. pegaguses, and harpies, 4th- Creatures of heraldry as quadrupeds with birds feet, risen with dogs heads &c. 5th- Figments of imagination, as ghosts, apparitions, and unreal animals as devils &c. 6th- Hallucinations of the senses, as of the sight and hearing, whence ocular spectra, illusions of the ear, and phantasms of the senses. Books recommended by Dr. Mitchills on Zoology. Dumoids Zoology. Pennants Zoology Cuvier's Animal kingdom. Cuvier's Fossil Zoology, and Cuvier's Comparative Anatomy. This ends the history of the Mammalia, it is sometimes called Mammalogy. Dr. Macneven's Lecture. Chlorine is one of the supporters of combustion and is found only in substances that contain oxygen it is obtained from manganese, and half the quantity of Sulphuric acid by a gentle heat, it has a pungent suffocating smell and deprives all bodies to which it is added of their colours, it forms acids with leser. the rays of the sun have great power in separating oxygen from bodies, which contain it. The detonating powder is composed of the oxymuriate of potash, sulphur and charcoal, and the ignition is produced by the percussion. It is found that bodies lose in weight in proportion to the oxygen gas they evolve. [illegible] is taken out of bodies as are other colours by Chlorine. November 26th- Dr. Post's Lecture. The anterior part of the base of the cranium is that part forward of the piterygoid process it is composed of the lower parts of the os frontis, and of the ethmoids, it has certain foramina for the transmission of arteries &c. on the superior orbital brim a hole or notch called the foramen orbitale externum superius for the passage of a principle branch of the 5th- pair of nerves, the foramen opticum for the optic nerve and artery, the foramen Cacerum an irregular fissure for the passage of the 3d, 4th- 5th- and 1st branch of the 6th- pair of nerves. In the middle region there are the cuneiform process of the os occipitis, the body of the os sphenoides, and the petrous portion of the ossa tempora, the styloid process is very long end projecting and arises from the ossa tempora, the mastoid process arises on the outside, the zygomatic process also is in the region, under which the temporal muscles pass, there is also the foramen ovale for the passage of the 3d. branch of the 5th- pair, the glenoid cavities for the articulation of the condyles of the lower jaw, the eustachian tube for the passage of the air, and the meatus auditorius externus, or bony external orifice of the ear. In the posterior region of the base of the cranium is the foramen magnum occipitale, through which the medulla spinalis &c. passes. - Dr. Mitchill's Lecture. The 2d- Class of vertebrated animals Aves. Birds. These are oviparous and biped. this science is called Ornithology. Birds have in their fore extremity a humerus, radius, ulna, metacarpus &c. the articulation between the scapula, clavicle, and ribs is very similar to the human body the sternum is very large and projecting, and connected by a very firm articulation to the ribs which have very little motion the length of the neck corresponds to the length of the lower extremities for obvious reasons, Birds have no pubis, neither do they masticate their food, they have the power of moving the chrystalline lens either forward or backward to see near or at a distance, also a membrana nictitaus which they close at pleasure they have very little cerebellum, the pharynx of birds and in an enlargement called the crow, which terminates in the crop or stomach, which contains a liquid, that macerates the food preparatory to its passing through a small position of intestine in to the gizard a strong muscular organ which grinds the food this organ in carnivorous birds is very weak. Dr. M. thinks that birds by instinct swallow stones to assist the trituration of their food, which is contrary to the opinion of Spallanzani, who supposed they were swallowed by accident, these stones are almost irrvariably found in the stomachs of granivorous birds. Dr. Macneven's Lecture. Oxygen is found in all animal and vegetable substances, and in many inorganic substances. Chlorine, one of the supporters of combustion, is an acidyfying principle, and forms an essential part of sea salt. Chlorine differ from Oxygen in this, that it unites directly with metals, while Oxygen first oxydates them. Chlorine is the radical of Mur. acid, which is a combination of Chlorine and Hydrogen - Chlorine is very heavy while Hydrogen is the lightest body known their relative weights are as 1 to 33. Fluorine is the basis of Fluoriespar, it must have flint in its combination to form the gas called silicated fluoric gas which corrodes glass, and is made use of in the arts. Cava glass with wax and then draw or mark out any design you wish in the wax, and then by adding the fluoric acid, it corrodes that part of the glass not covered with the wax. Fluoric acid is a peculiar base united with Oxygen. Fluorine is not oxymuriatic acid, as some suppose but a simple substance. Dry muriate of lime is the greatest absorbent of moisture known. Potassa has great affinity for Oxygen, and consequently is made use of to separate it from bodies which contain it. It was supposed until a few years since that Oxygen was the only supporter of combustion and acidyfying principle but it is now found that there are three others. Iodine, Fluorine and Chlorine.- November 27th- Dr. Post's Lecture. The middle part of the lower base of the cranium is formed by the sphenoides in it is contained that substance called the pituitary gland the 4 clinoid process of the os sphenoides from sella turcica, the middle lobes of the cerebrum are contained in this region. The posterior region is formed by a transverse line, and contains the two lobes of the cerebellum, there is a large foramen in it for the passage of the jugular vein, also the meatus auditorius internus for the 7th pair of nerves, the os frontis form part of the orbit of the eye, the frontal ridge terminates in two processes called the internal and external angular processes. The parietal bones are of a quadrangular figure, and externally convex. The posterior part of the os occipitis forms the cuneiform process which has sometimes given way under great weights carried on the head, causing immediate death, near this are the condyloid processes for the articulation of the attas, in this region are foramina for the passage of the 9th- pain of nerves. Dr. Mitchill's Lecture. The backbone of birds is short and connected by anchylosis, the ribs have no cartilages, and they are very confined in their motion, the voice of birds is formed in the glottis, in respiration, the air passes through the lungs into the bones giving them their specific lightness which is required in flying As they migrate and are subject to great alternations of temperature in the air, their blood is hotter than any other animals, and they have the capacity of generating heat, and this is absolutely necessary in the act of incubation. Their Vestitus or clothing is divided into three sorts. 1st- The penna or quill. 2d- The pluma or feather, and 3d. The barba or hair which immediately invests the body. There are always 10 feathers which arise from the humerus, and an indefinite number from the radius and ulna, these quills contain air. November 29th- Dr. Post's Lecture. The frontal sinuses are situated in the anterior part of the base of the os frontis, and communicate with the noses, wherby they are filled with air and often in severe cold the inflamn. extends from the noses into these sinuses, these sinuses do not exist at birth but are formed at the age of six or seven years, worms are very often found in the frontal sinuses of sheep, but very seldom in man The os Sphenoides is divided into three parts its body and two wings on each side, one large, and the other small this bone extends from one bone to the other of the temples, the pterygoid processes of this bone form the boundary line of the noses behind. The os Ethmoides is a very spongy bone enters and divided by the crista galli, which sustains the falex of the dura mater, the ethmoid sinuses communicate with the noses Dr. Mitchill's Lecture. The ovum of a bird is contained in the oviduct of the female, and consists of the following parts. 1st- Testa or shell, which consists of carbonate of lime, and is full of little pores for the transmission of air 2d- Membrana or membrane, respecting which there was a difference of opinion. Harvey maintaining that there was one only and Mayow that there were two, this immediately invests the shell. 3d- Vesica acrea or air bladder. 4th- Albumen or a white, thick glaring substance coagulate by heat, and which serves for a bed to the fœtus, and protects from changes of temperature &c. 5th- Vitillus or yelle. which is for the nourishment of the egg. 6th- Chalaza or speck where the ligaments unite to balance the different parts of the egg. 7th- Poli vitelli or poles of the egg ligaments extend from one pole to the other. 8th- Germen or rudiment not discernible until incubation has continued some time. 9th- Punctum saliens, or vital point, when the germen is discernible, and the heat begins to beat. Dr. M. says that the heat preexists before the brain and the most irritable part of the body, the brain not very irritable bone this also applies to man. 10th- Embryo, Fœtus, and Pullus, the different stages of being of the chick during its incubation until its exclusion from the egg. -- Dr. Macneven's Lecture. Electricity consists in Attraction and Repulsion, or the power which bodies have in different degrees of Electricity of attracting or repelling each other. Bodies possessing the same state of electricity repel each other, while bodies possessing different proportions of the electric fluid attract each other, it being a natural law, that electricity like heat always tends to an equilibrium. to prove that bodies possessing different degrees of electricity attract each other Dr. M. made the following experiment, three metal bells were suspended to the receiver of an electrical machine, one of the bells communicated with the earth by a chain, which preserved the bell in its natural state, the other two being non conductors received the electric fluid from the receiver, and the two being attracted by the middle one a ringing was made. Amber was the only electric body known to the ancients, the earth is the great source of electricity, where it diffuses itself, and preserves a state of equilibrium, there are various ways of exciting it as by vicinity, or friction, which is the means generally used bodies excited are called electrics, and electrics are non conductors so called because they do not convey electricity but retain it, as glass, sealing wax and others. Metals are good conductors as is water, whence the reason that electricity cannot be collected in a moist atmosphere, the bodies of animals are good conductors, owing to the quantity of fluids they contain to retain it when collected, it must be seperated from the earth by a non-conductor, to prove that bodies repel each other when equally electrified, suspend two or three feathers over an electrical machine, and they will hang together on account of their specific gravity, but electrify them and they immediately diverge from each other, there are two kinds of electricity, resinous and vitreous. Electricity when collected from the cushion is called Negative, when from the metallic tube of the machine, it is called Positive. Dr. M. says, that Chemical Affinity is probably the effect of electric action. November 30th- Dr. Post's Lecture. When matter forms in the autrum Higmorianum, the middle molars should be extracted to discharge it, sometimes fungus shoots out of this sinus and from the orbits, and it is generally incurable, worms are sometimes found in this sinus. The os nasi is convex externally and concave internally, connected by the transverse suture to the os frontis, to the os maxilla superioris by the nasal suture In operating for the fistula lachymalis if any resistance is made to the passage of the instrument it is a sign that we are pressing the nasal process, as the os unguis is very easily perforated. The form of the os mala is quadrangular they form the prominent part of the cheeks. Dr. Mitchill's Lecture. Physiology of the Egg. Exciting powers. 1st- Sperma or fecundating liquor of the male, which fecundates eggs without which they would not hatch though they are laid. 2d- Caloric which is applied in different ways as by insolation in the ostrich which deposites her eggs in the sand to be acted upon by the sun, or Incubation. 3d. Compression of air, air is contained between the shell and membrane of an egg, which by heat becomes rarified and acts as a mechanical stimulant upon the parts of the egg, another use of the air bladder is to receive and eliminate such air as may be injurious to the chick. 4th- Nutriment by the intestines, which nutriment is the yolk. 5th- Oxygen which is absorbed by the pores of the shell. Dr. M. produced a book of Mayow published in 1681 by which it appears that he was the discoverer of Oxygen, and of its being necessary to the existence of animals. Birds turn their eggs once in 24 hours that they may be supplied with vital air. Eggs will not hatch in azotic gas, nor when deprived of atmospheric air. Dr. M. says that Azote is taken into the circulation of animals, and that it is a pabulum viti. 6th- Nutriment by the mouth which is the albumen, which is taken for nourishment after the yelle is consumed, and the bill formed. Dr. Macneven's Lecture. Two of the effects of electricity are light and combustion, it produces a cold current of air, water is rendered luminous by it, and allcohol is ignited by it. There is a great analogy between electricity and Caloric, as they are contained in all bodies, and excited by the same means as friction, and both travel with great velocity, it has a smell which heat and light have not it acts with more energy on account of the dryness of the atmosphere in winter than in any other season, it accelerates fluids in capillary tubes, as is proved by the following experiment. Put a vessel containing water on an electrical machine, it should have such an opening that the water should strap slowly, then electrify it, and the water will run a stream. Electricity promotes perspiration and evaporation, and quickens the circulation, hence the reason why in damp weather when there is little electricity our bodies are so languid. December 1st- Dr. Post's Lecture. The bone of the lower jaw has two processes called the coronoid and condyloid, the anterior is the coronoid, the posterior, the condyloid, which are convex and are received into the glenoid cavities of the os. temporis, there is an interarticular cartilage in this joint, Dislocations of this joint take place anteriorly, to reduce it, the jaw should be drawn forward to disengage the process, In fractures of this bone in children, two silver plates should be applied to the inner and outer side of the jaw to prevent motion - The teeth of animals differ very much in size, situation, and number. The teeth of man are divided into incisores, cuspidati, bicuspidati, and molares. Dr. Mitchill's Lecture. The anatomy of birds is divided into partis nudae, and tecta. The naked parts are Rostrum Reale, Cera, ceer, surrounding the nares, Nares nostrils, Lingua, tongue, Frons, forehead, Faceis, face, Genu, cheeks, Tempora, temples, Oculi, eyes, Palpebrae, eye lids, Galea helmet, in some birds, Pes, including the whole limb from the head of the femur. The covered parts [cross out] Vestiters or feathers, Caput, head, Pilcus, top of the head, Occiput, Capiotrum, margin of the bill, Crista, crest, Callum, neck, Aures, ears, Truncus, trunk, Dorsum, back Pectus, breast, Abdomen, belly, Artus, Upper extremities, as Aloe, wings, which are divided into Impennes, or wings destitute of those feathers which are for flying. Penneformes, to assist in swimming, and Pinnate or wings for flying - December 2d- Teeth are composed of two parts, Bone and Enamel they are divided into body, base, neck, and fang, they possess but little vitality, their enamel none, the enamel is very hard to resist friction, the bone of teeth is likewise much harder than other bones, and when [cross out] once coloured with madder always retains the colour which other bones do not, they are limted with a membrane covering the artery, nerve & of the tooth, this membrane is the seat of pain. Teeth are sometimes united by anchylosis to their sockets. Dr. Post considered the different forms and situation of the teeth - Dr. Mitchill's Lecture - Ornithology, Aves or birds divided into 6 Orders, +Linneus, *Cuvier +1. Acciptitres. *Oiseaux de proqe. Birds of prey. 2. Picse. " Guinpeurs. " feet for creeping. 3. Passeres " Passeraux. " Living upon seeds & insects. 4. Gallina " Gallinacis. " " " " " fruit. 5. Gralle " Echasscurs. " feet for wading. 6. Unseres " Nageurs. " " " swimming. Dr. Macneven's Lecture. Nitrogen is an elastic and colourless gas, and composes 4/5 of the atmosphere, its specific gravity is less than atmospheric air, it differs from other gases in not communicating any acid taste to water, the processes for obtaining it are various, its two great sources are the atmosphere and animal matter with Oxygen it forms nitric acid, it is unfit for respiration or combustion, it may be obtained from burning phosphorus in common air, for it will absorb all the oxygen and the residuum will be Nitrogen, or as it is sometimes called and always by the French Azote. Dr. Mitchill says that it is a pabulurn vite, and enters the circulation which is contrary to the opinion of philosophers who say that it is received into the lungs, with the air, but immediately thrown out as something deleterious, it is however a constituent of all animal matter. December 3rd- Dr. Mitchills Lecture. The genna of birds can be determined by the form of thin skulls &c. Order Anseres. Genus Procellaria or Petterol, a web footed water fowl bill toothless, upper jaw or mandible aduncous, feet palmated. Genus Diomedia, or Albatross, short bill, upper mandible hooked, lower one truncated, nares oval, and lateral. Genus Rynchops, or Sheerwater, a projecting bill, the upper mandible shorter than the lower. Order Picoe Genus Buceros, or Hornbill, bill convex and bent, skully part of the head, bony, gibbous, and naked, nares behind the base of the bill. Order Passeres. Genus Trochilus, or Humming bird, the upper mandible shutting within the lower. December 4th Dr. Michtill's Lecture. Wilson the American Ornithologist divided Birds into Land birds, and water birds or waders, and web footed water fowl. The land birds include the 4 orders of Linneus, viz, the Accipities, Pica, Passeres, and Gallina, and the water bids the two remaining orders of Grallae, and Anseres. The land birds were divided into the following Genera Genera Vultur or Vulture. Falco, including the hawk, family. Strix, owls, night birds of prey. Lanius - Butcher bird. Psittacus, Parrot. Corvus, Crow. Orion, Hanging birds. Genera Gracula, Black bird. Cuculis, Cuckoo. Picus, Wood pecker. Sitta, Muthatch. Alcedo, Kingfisher. Certhia, Creepers. Trochilus, Humming bird. Genera Sternus, Starling. Terdus, Mocking bird. Ampelis, Chatterer. Loxia, Gross. beak. Curvirostia, Cross. beak. Embiaer, Bunting. Tanagran. Fringella. Finch. Sylvia, Blue bird. Genera Alauda, Lark. Piera. Parus. Hirundo, Swallow. Caprimulgus. Goat. sucker. Columba, Pidgeon. Meleagris, Turkey. Tetrao, Partridge & Quail. These Genera include all the land birds of Wilson. Dr. Macneven's Lecture. Astringents - Acetite of lead is given internally in hemorrhage, menorrhagia, diarrhea, those who work in it are subject to colic, paralysis, and costiveness, in hemorrhages of the uterus, where it is not inpregnated, in the last stages of dysentery, and cholera infantum, there is more danger in giving small doses, than large ones, which act promptly. Alum is given in hemorrhage, hemoptysis, leucorrhea, diabetes, menorrhagia, and externally applied to sore eyes. The Muriate of Berytes is given scrofula, and cancer, The Carbonate of Barytes is poisonous. Aqua calcis contains about a grain of lime in an ounce of water, it is tonic and astringent, is applied externally in scalds and burns combined with oil, lime water and milk is given in an irritable state of the stomach, in dyspepsia, dysentery, and diarrhea. Oxygen is very irritating to sores. Muriate of lime mitigates but never cures scrofula. Creta preparata is given in the dysentery of children whenever the stools are green, it is an evidence of an acid being present. The Mineral acids are all tonic - The Sulphuric acid is astringent, and strengthens the stomach, is given in cutaneous eruptions, the concentrated sulphuric acid should never be given, as it contains the sulphate of lead. The Muriatic acid is used as a gargle in putrid sores of the mouth. The Nitric acid is given in the secondary stages of Syphilis, chronic hepatitis, and glandular diseases, also used as a wash for scrofulous sores. Tonics of the Animal kingdom. Phosphorus is given in the worst cases of typhus fever, and where there is great prostration of the vital forces. Gelatin is another animal substance it is contained in peruvian bark, but not in others medicines which led many to suppose, that it was the acting principle in bark, and they accordingly gave it in intermittents. December 6th- Dr. Mitchill's Lecture. 3d- Class of Vertebrated animals. Amphibia. The science is called Erpetology from Erpetos a reptile. These animals have cold blood passing either through the aortal inculation while they are under water, or through the lungs, which extend far down into the abdomen. Their skins are either scaly as in lizards, bony like the tortoise, or naked as in frogs, they have but very little brain, but their nerves are extended extensively over the body. Tortoises will live a fortnight after decapitation, and the heart will beat a long time after separation from the body., Linneus has divided them into 2 orders. Repitilia or those which have feet, and Serpentia or those without legs Order Reptilia Genus Testudo or Tortoises " Draco or Dragon " Lacerta or Lizard " Rana or Frog Order Sepentia Genus Crotalus or Rattle snake " Boa " Coluba " Anguis, or Worms " Amphisbana " Cecilia, or Blind snakes Cuvier divided them into 4 Orders. 1st Chelouiens. Tortoise 2d- Sauriens, Lizard. 3d- Ophidiens. Serpents. 4th- Batcaciens. December 8th- Dr Mitchill's Lecture. Order 1st- Reptilia. Genus Testudo, or Tortoise which have a bony covering. this genus is divided into 3 Sections 1 Section - Marina or sea tortoises with legs like fins. 2 " Fluviales, or river tortoises with membranes for swimming. 3 " Terrestres or land tortoises Genus Ranae, including the toad and frog. 4 Sections. 1 Sect. Bufones, or toads with warty bodies. 2 " Ranae or frogs with smooth bodies. 3 " Hyla or tree frogs with feet by which they can climb a plane of glass. 4 " Caudata, or those frogs which have tails, of this section there is only one species called the rana paradexa. In this genus impregnation does not take place in the body of the female, the eggs hatch into tadpoles, which afterwards become frogs. Genus Draco, or Dragon, one species only the Draco volaus. Genus Lacata or Lizard, scaly and with four legs. 10 Sections Sect. 1. Crocodile. segmented tail. " 2. Cordata, scaly bodies. " 3. Inguana. finny bodies. " 4. Salamander. clawless feet. " 5. Gakones. warty bodies. 6th. Chameleons, change colour. 7. Sapes, collars round the neck. 8. Lacerti. striped bodies 9. Scinx. with imbricated scales. 10. Calcidae. Genus Prateus. This Genus has both lungs and gills. Dr. Macneven's Lecture. The contractility of the stomach is destroyed by over distention, the act of vomiting cannot be complete without the cooperation of the diaphragm, the liver, gall bladder, and other abdominal viscera are compressed and acted upon by the operation of emetics, there is a great sympathy between the stomach and other parts, through the medium of the nerves as by the par vagum, Emetics produce a more copious secretion from the glands, and also effect the skin. There is a reciprocal action between the skin and digestive organs. In the administration of Emetics, particular regard should be had to the idiosyncrasy and nervous susceptibility of the patient where we wish emetics to make a strong impression on the system, no drink should be given. Emetics are given in nausea, bitter taste in the mouth, cardialgia, continued fevers, intermittents, dysenteries of hot climates &c. they are improper in plethoric habits, or if given depletion should be premised, as dangerous consequences might result from their administration, such as Apoplexy, rupture of blood vessels &c. Vomiting is to be checked according to its urgency by the following remedies, opium pill, burnt brandy and sugar, warm fomentations, sinapisms, blisters, and lastly by opiate injections. December 9th- Dr. Mitchill's Lecture. Ichthyology. 4th Class of Vertebrated Animals. Pisces. or Fishes - Fish breath through gills, the air is contained in the water which is received by the mouth and ejected by the branchial arches. Fish have cold red blood, and a single heart an artery runs from the heart to the gills, their alimentary canal is very similar to that of man, they swallow their food whole and have generally no grinders, they have an air bladder which they have the power of dilating or compressing, whereby they either can float or sink. Fish are divided into bony and cartilaginous, they have like birds one common outlet for their excactions and eggs. The fins of fish are divided into pectoral, dorsal, ventral, caudal, branchial and anal fins. Dr. M. says that air is frequently secreted in different parts of the human body, as in the bladder &c. Dr. Macnevens Lecture. The atmosphere is a thin, transparent, elastic, and invisible fluid its Physical properties are its weight and elasticity, it is the pressure of the atmosphere which retains fluids in their situation, every cubic inch of our bodies sustains 14 lbs of stenospheric pressure, it is counterbalanced by the air which is contained in our bodies, the pressure of the air was first discovered by Toncielli in 1643. The ascension of the air in the sucking pump is explained by the pressure of the air being removed. The mean pressure of the atmosphere is equal to 30 inches, and varies but little. The Barometer rises on mountains which is the consequence of its sustaining a less column of air. Heavy and light bodies fall to the ground at the same time in an exhausted receiver, as was shown by a cent and a piece of cotton, the attraction to the earth being the same in both bodies. The great pressure of the atmosphere shows why our bodies are so affected by changes of weather &c. December 11th. Dr. Mitchills Lecture. Fish have small brains, eyes situated on opposite sides of the head. Dr. M. says that he thinks that we see with one eye only, and says that the cornea of one eye is always more protuberant than the other he mentioned two instances of persons losing the sight of one of their eyes without their knowledge, and accidentally discovering it, one person was his mother. Fish have organs of hearing water is an excellent medium of sound, and sounds are conducted much farther on the surface of water than merely through the air as has been proved on lakes the taste and touch of fish are not acute, their tongue is often beset with teeth. The sexes are in pairs, and the organs of generation are in the male two testicles, and in the female an ovarium. In a large cod fish, half a million of eggs have been counted. Fish are animalivorous, and the same species feed on each other they are oviparous, the female deposites her eggs in the sand and the male afterwards bedews them with sperm. Fish are divided into 2 Classes Bony and Cartilaginous. The bony are divided into 4 Orders, which are classified by their ventral fins. Order 1st- Apodes, no ventral fins. " 2 " Jugulares, ventral fins on the throat. " 3 " Thoraciæ, " " " " breast. " 4 " Abdominales " " " " belly. Dr. Macneven's Lecture. The Barometer varies from 29 to a little over 30, at the top of the Andes which is 3 miles in height the barometer rises to 1666/100, and hemorrhages occur the atmosphere extends 40 miles above the surface of the earth, which is known by the rays of the sun being reflected at 40 miles above the earth. Air is never completely exhausted by the air pump but only rarified, it is very busy out, and it is owing to this property that some substances float, and birds fly, every body displaces a quantity of air proportioned to its violence as air rarifies and parts with its caloric, it grows cold, as is proved by a thermometer placed in the receiver of an air pump. The elasticity of the air is proved by the following experiment. experiment. Place a bladder which contains a small quantity of air, and which of course is collapsed into the receiver of an air pump, and then extract the air, you will observe, that as the air is rarified in the receiver the air contained in the bladder will expand it to its full size, afterwards admit the external air, and the bladder will immediately collapse to its former shrunk state. Dr Mitchill's Lecture December 11. 2d- Class Cartilaginous Fish. Order 5th- Chondriopterygeus with cartilaginous fins as the shark &c. Order 6th. Branchiostegeus with covered gills. Specimens of Fish - Order Apodes Genus Murana, Species Anguilla vulgaris, common eel, no ventral fins, body cylindrically roundish and smooth.- Order Jugulores Genus Gadus or cod, Species Gadus collarias, the rack cod of N. York of a varigated colour, Species Gadus tomcodus, the tomcod. Order Pectoral Genus Labris - Species Labris tantaga, the tantag or black fish, with sharp teeth. Dr. Macneven's Lecture. Mercury will permeate the pores of wood by placing it on the top of an exhausted receiver, owing to the compression of the external air, it will descend through the receiver in a shower. Water will use 33 feet by the pressure of the air, the entry of air into a vacuum causes an explosion, as is proved by a bladder over an exhausted receiver, and puncturing it. Emetics prepare the way for other remedies, and are applicable in almost all fevers, particularly in those of hot latitudes, they are generally connected with a diseased state of the stomach, emetics break the chain of morbid association, there is a difference of opinion respecting their applicability in malignant fevers. Dr. M. has found spirits of turpentine very beneficial in puerperal fever in the dose of half a wine glass full it excites evacuations by stool and perspiration. Menstrual blood is not pure blood but a secretion from the womb, it does not coagulate When croup comes on very suddenly it is spasmodic, when gradually inflammatory, emetics are applicable in both, they are given in chronic affections of the breast, particularly in peripneumonia nottra, in spasmodic, and humoral asthma, the sulphate of Zinc is given in, they are given in dyspepsia, foul states of the stomach, chronic diarrhea, dropsies, tic doulereux, mania and hernia humoralis, and in some nervous diseases which originate from a diseased state of the stomach. December 13. Dr. Macneven's Lecture. Hydrogene is a permanently elastic, invisible gas, and the brightest of all bodies 16 times lighter than oxygen, it is an acidifiable combustible, in its most simple state it is combined with caloric and electricity, and cannot be separated from caloric except by affinity by mixing two [?easures] of oxygen and one of hydrogen and passing the electric shock through them the gases detonate and form water which is of the weight of the gases, all inflammables exist in a state of positive electricity, oxygen exists in a state of negative electricity; more oxydable bodies occupy the positive pole of the voltaic apparatus. Hydrogen exists largely in vegetable and animal matter, it can be procured from iron filings or from zinc by pouring on acids much diluted, as a proof that the hydrogen is obtained from the water, the acid remains not at all diminished after the process; it is inflammable only when added to some combustible when an intense heat is produced, in respiration it is negative, and is not absorbed by water, it unites with oxygen in one proportion. Hydrogene unites in a determinate proportion with iodine, and chlorine, forming hydroiodic, and hydrochloric acids. December 14. Dr Macneven's Lecture. The constitution of the air as high as has been examined is the same. Hydrogen is the gas made use of in balloons. Atomic Theory. All simple and compound bodies unite in definite proportions, for instance Muriate of Soda whether obtained or made by artificial means consists of determinate proportions, the elements of bodies are unchangeable and the ultimate particles of bodies are hard and minute if it were not so matter could not exist, in compound bodies each particle is composed of an atom or atoms of the compound Bodies are never in actual contact as is proved by bodies being contracted by cold, showing they were not in contact, 100 parts of sulphur and 100 of oxygen form Sulphurous acid, 100 of sulphur and 150 of oxygen form Sulphuric acid. The Atomic Theory or doctrine of definite proportions was established in 1804 by Dalton, and since that has been received by all Chemical Philosphers, the only thing assumed in this doctrine is, that bodies are resolvable into atoms. Alkalis are acid and turn vegetable blues green, Acids are sour, and turn vegetable blues red - December 15. Dr. Mitchills Lecture. Phytology, or Botany, the second great division of organized and animated beings. Vegetables are apathic, they possess motion, but no nervous system, consequently no feeling. Dr. Percival says that they have feeling and perception, they are destitute of local motion and take their food by inussusceptio, their nourishment is taken in two ways, from the earth through the medium of water, and from the air, some vegetable live underground as some of the order Fungi some float on the water, and some between land and water. Fungi grow on a foot stalk, some of this order are called parasitical plants, and derive their subsistence form other plants, whence the word parasite is derived the mould that grows on bread and other substances is a species of the parasitical kind. The Vegetable World is divided into 7 great natural families viz - Family 1st- Fungi Mushrooms. " 2. Algae, Flags " 3. Musci. Mosses. " 4. Filices, Ferns. 5th- Gramina, Grasses. 6. Palmae, Palms. 7. Plantae, Plants. Dr. Macneven's Lecture. Emetics. Ipecacuanha is a mild and effectual emetic, and more certain in its operation than the minerals, there are three kinds, the gray, brown and white the gray is the best, its greatest activity is in the resinous part and it operates almost as well in small doses in large, it determines to the surface, and is given in febrile diseases, chronic dysentery, asthma, and hemorrhages. Tartar Emetic is emetic, purgative and diaphoretic according to the dose in which it is given, a solution of tartar emetic should supersede antimonial wine it is given in exanthematous affections, and in injection in 8 or 10 grains in cases of obstinate constipation, and in tetanus, as an antidote the extractive matter of vegetables which decomposes it. Turpeth Mineral in a dose of 6 or 8 grains in swelled testicles. Sulphate of Zinc is a prompt emetic, and is given in hooping cough, and when poisons are taken. December 16. Dr. Mitchill's Lecture. Fungi grow by a single foot stalk, and are the lowest in the scale. Musci have a stalk containing seeds at its end. Filices bear their organs of fructification on their back, remedy for tenia. Gremina, their peculiar character is a long stem called culm, hollow, and divided into joints, of these there are barley, rye, and wheat &c. called cerealia. Palmæ have a single stem without branches but leaves, they grow under the tropics, Cacao and Sago are obtained from the palm. Plantæ. comprising all those vegetables not included in the six preceding divisions. Plants are divided into 4 Orders. the orders are mostly arbitrary. Order 1st- Herbaceous, those that die in the winter down to the rest. " 2. Frutices, Shrubs of small size as the Liloch. " 3. Subfrutices, Underbrush, as the cranberry &c. " 4. Arbores. Trees, all those vegetables larger than the Frutices. They are also divided according to their duration into 1. Annual, or those which live only one year. 2. Biennial, or those which live two years, as the parsnip &c. 3. Perennial or those which do not die, as the trees. Dr Macneven's Lecture. Sulphur is generally obtained from the neighborhood of Etna, also from Pyrites which is a combination of sulphur and iron, the sulphur is sublimed by heat, Sulphur does not change from exposure to the air, and is insoluble in water, when it is heated so as to ascend it forms the flowers, and when melted it cools in chrystalls, it is soluble in Sulphuric ether and in oils, it burns with a pale blue colour with a suffocating smell. Sulphur when formed into Sulphurous acid increases in weight, owing to the Oxygen which it receives. Sulphurous acid contains 100 parts of sulphur and oxygen Sulphuric acid contains 100 parts of sulphur and 150 of oxygen Sulp. ac. turns vegetable blues red, and afterwards destroys the colour as Iodine. 1/2 volume of oxygen and 1 of hydrogen forms water, it takes 1 volume of sulphurated hydrogen and 1 1/2 of oxygen to produce combustion. The specific gravity of sulphur and oxygen is 1,111. Sulphurous acid is converted into sulphuric by heat as the water which is lighter than the acid evaporates. Sulphuric acid is colourless, of a glutinous consistence, and nearly twice the weight of water. Sulphur is 16 times heavier than hydrogen December 17. Dr. Mitchill's Lecture. Vegetables are divided into Indigenous, or those found at the settlement of the country. Exotic, or those introduced into a country. Cicurated, or those exotics which become naturalized, and thrive in the soil in which they have been transplanted. Vegetables consist of three great parts. Radix or root, Truncus or trunk or body and Fructificatio or organs of fructification. The Radix gives fixity to the vegetable, and is the medium of nourishment, water is indispensible to the support of plants. The Truncus is naturally perpendicular, and has an inclination to the sun, from the trunk are obtained by different processes, bark, gum, resin, turpentine, tar, pyrolignic acid and potash. The organs of fructification, or the apparatus of vegetable generation consist of the seed and their appendages. Vegetation ends where Fructification begins, for where a flower blooms that part never grows afterwards, but the growth is from other parts. Dr. Macneven's Lecture. Sulphuric acid formed by burning Sulphur. Sulphas. Potass. is a natural bitter salt, and chrystallizes in small six sided prisms, it fuses in a strong heat, boiling water takes up 1/5 of its weight, it consists of 45 parts acid, and 55 base 1/4 of charcoal decomposes it and forms the Carb. Potass. The Sulphas. Sod. contains 54 acid and 46 base. it is very bitter, and more soluble than Sulp. Potass. Sulp. Barytes is made by adding Sulp. ac. to any Barytic salt, or to water containing Barytes, it takes 43,000 grains of water to dissolve 1 grain of Sulph. Barytes. It is decomposed by 3 or 4 times as much potash, boiled in a strong iron vessel, which forms Carb. Potass. Powdered Sulphate of Barytes is also decomposed by Charcoal. Sulphate of Lime consists of 49 acid, and 51 base, it contains water, therefore fuses in a strong heat, it is decomposed by Carbonated Alkali and Charcoal Sulph. Magnesia or Epsom salt contains 67 acid, and 33 base Sulph. Alumenis is a an astringent salt, of a sweetish taste. December 18. Dr. Mitchill's Lecture. Botany is divided into three parts 1st. Philosophical Botany, or the Anatomy & Physiology of Vegetables. 2. Systematic " " " Arrangement & Classification. 3. Medicinal, Dietetic, and Technical, the first their virtues as remedies, second, as diet, and the last, their virtues in manufactures as tanning and dying. 1st- Philosophical Botany, the Anatomy of Vegetables. The Germ or punctum vitale of vegetables is of 5 roots 1st- Semen or seed, the fructus of vegetables, contained within the seed, and preceded by a blossom. 2d- Germa, or bud, growing at the side or end of a branch to protect it from cold, that is the infant germ. 3d- Bulbus or bulb, inclosing the germ in concentric layers as in the onion, it is called hybernaculum, because it protects from cold. 4th- Oculus, or eye, from some vegetables having holes, of some resemblance resemblance to an eye, with a radical germ or root, as the potatoe. 5th- Succulus or sprout, a germ without a bud, excrescences growing on the trunk of trees, sometimes called suckers, because they draw nourishment from the branches Botanical Marks. Annual ☉ Biennial ♂ Perennial χ Shrubs. ¬ Cicurated § Dr. Macneven's Lecture. Cathartics increase the peristaltic motion of the intestines. Some Physiologists have supposed that the sensibility of the intestines increases from the stomach downwards. Purgatives extend their effects to the abdominal viscera, diminish the circulation, and lessen the fluids, depletion from any part causes an afflux of humours to the part. the first action of cathartics is stimulant, their remote effects sedative, during their use dilute freely, in hypercatharsis, the best antidote is the warm bath, with opium in a solid form. they are given in bilious remittent fevers, continued inflammatory fevers, typhus repeated every two or three days in exanthemata, as measles &c, in erysipelas, copious purging, watery solution of opium to allay the itching, in scarlatina, cold affusion, even in winter, active cathartics in dysentery in acute diseases of the head, palsy, hydrocephalus, hepatitis, chorea, epilepsy, truisms nascentium, hysteria. In mania griping purgatives combined with tart. emetic should be given. December 20. Dr. Mitchill's Lecture. Seeds are divided into - 1st- Arillus, outer coat, as the pad of a peanut. 2. Membrana, inner lining, in contact with the seed. 3. Fovea. aperture for the admission of air, water, and nourishment. 4. Heilum, cicatrix or navel, whereby the seed was attached to the plant. 5. Corculum, point of life, the incipient plant. 6. Plumula. fatal plant resembling a feather, attached to the Curriculum. 7. Rostellum, the root which turns downwards. 8. Cotyledon, vegetable yelle and white, furnishing nourishment. Vegetables retain their vitality for a great length of time, the only certain proof of animal or vegetable life being extinct is the commencement of the putrefactive process. The great length of time which vegetables retain their susceptibility to be acted upon by the natural stimuli has given rise to the theory of Equivocal Generation. The case of Dr. Tennant whose funeral was delayed for two days through the intreaties of a friend was a strong instance of suspended animation without the extinction of life, he recovered and lived many years. Dr Macneven's Lecture. Sulphur combines with alkalis, and forms sulphurets. which were called hepaes from their colour being similar to a liver. Sulphur and Lime heated have the power of absorbing light, and emitting it in the dark. Sulphurets emit a bad smell, have an acrid taste, and are decomposed by all the acid the sulphur precipitating, and the acid uniting with the alkali Pour dilute muriatic acid on one of the sulphurets, and sulphurated hydrogen gas is liberated, this gas smells very offensive, and is inflammable, if combined with oxygen or atmopsheric air, it inflames with combustion, it tarnishes metals, and blackens white paint, it is absorbed by water, and water saturated with this gas reddens vegetable blues, and if exposed to the air a pellicle is formed on the surface. Sulphuretted hydrogen gas precipitates all the metallic ozides except cobalt and a few others, hence its use a test in discovering poisons, it changes water containing arsenic of a dirty yellow colour, and if tart. emet. an orange red colour. Sulphurets can only be kept in a dry state, for if they are exposed to moisture, hydrosulphurets are formed. December 21. Dr. Mitchill's Lecture. Seeds are divided into several kinds relative to their Cotyledons or lobes. 1st- Acotyledons, plants without cotyledons or lobes. 2. Monocotyledons, those with one lobe. 3. Dicotyledons, having two lobes. 4. Polycotyledons, having more than two lobes. Acotyledons, without hunks, structure cellular, destitute of fibres and pith, vessels scarcely visible, as the families of the Fungi, the Musci, Filices and Algae, they are represented by [illustration] showing the cellular structure and the vessels scarcely visible. Monocotyledons trunks vascular and fibrous vessels and fibres in bundles is shown in this representation, the dots showing the vessels, and the intermediate space the pith which is distributed among the vessels [illustration], to this division belong the Gramina and Palmæ. Dicotyledons, compresing all vegetables with the Polycotyledons not included in the two former divisions, trunk vascular and fibrous, vessels and fibres in concentric rings, surrounding the central pith as is shown in the following representations [illustration]. Vegetables secrete milk and sugar during their germination as the coconut and barley. Sometimes animal sugar is secreted as in Diabetes. Beer and ale made by the following process, when the barely begins to germinate it is exposed to heat and dryed, and is then called malt, this malt is ground and water added, which forms sweet wort, this wort assisted by heat and moisture takes on the vinous fermentation, to this are added bitters as hop, and sometimes even aloes and opium Grain put in a fermenting state by heat, or the vinous liquor acted upon by the same process produces ardent spirits, the process called distillation, this spirit is a menstruum for resinous substances and mixes with oils, the effects of ardent spirits very pernicious. Dr. Macneven's Lecture. Phosphorus is a simple substance, and is obtained from the calcination of bones, the process is the following Calcine the bones untill the animal matter is consumed, then to an 100 parts of them pulverised, add 40 parts of strong sulphuric acid, with 4 times its weight of water. Urine when putrescent and dried affords a little phosphorus. Phosphoric acid is formed by the union of phosphorus with oxygen, it has all the proper ties of the acids. Chlorine gas supports the combustion of phosphorus, it is dissolved by Alkhahol and oil, is luminous in the dark, and melts under water at the temperature of 108, it is a violent stimulus, and unfit to be used as a medicine. Phosp. ac. has the the properties of dissolving readily in water, of not being decomposed by heat alone, and of forming neutral salts by its union with acidifiable bases, as the phosphate of soda, it consists of 46 72/100 base and of 53 28/100 oxygen. Phosphates are soluble in the nitric, and muriatic acids, and then decomposed by lime and ammonia. Phosphoretted hydrogen burns when it comes in contact with atmospheric air, this accounts for the lights seen in chuchyards, which abound with this gas. Phosphorus is sometimes given in the doses of 1/8 of a grain. December 23. Dr. Mitchill's Lecture. Appendages to seeds 1st. Pappus or flyer to waft the seed. 2d. Stipes a stem. 3d. Ala or wing. 4th. Nux or nut, the hard substance covering the seed. Chemical Analysis of the Monocotyledenous grain, wheat, the moist way or by putting it in water. 1st- Pellicula or scum, or brand rising on the top 2d. Mucilago, or mucilage, which turns sour and becomes vinegar. 3d- Gluten, a paste which also rises to the top. 4th- Aurytum, starch, or fecula, which is insoluble, and remains at the bottom. Mechanical division of wheat, by grinding and boulting into farina or meal consisting of the two following parts. 1st- Pulvis, or flour, the powdered part. 2d- Furfur or bean, the husky part. } Theory of making bread 1st- Azymic, or unleavened, made of water and grain, the air extricated from the water gives this bread considerable sponginess. 2d- Zymic or leavened which is made light by yeast. In the fermentation of wort a great deal of carb. ac. gas which is the heaviest of the gases remains on the top, which is called barm or yeast, leaven or emptyings, causing fermentation when added to the dough this fermentation is immediately stopped by the process of baking Turnpike leaven or dry yeast is made in the following manner. To meal of maize add water, some hops, sweet apples or pumpkins, then apply a proper degree of heat to make it ferment, while fermenting add more maize then knead it until it becomes stiff afterwards dry it gradually in the sunshine and make it into sticks, by moistening it any time afterwards, it will cause fermentation. Maize and rice are deficient in mucilage, which is the reason why they do not make good bread. Coffee stimulates the nervous system without exhausting it, and is very refreshing it strengthens digestion. Dr Macneven's Lecture. Laxatives, Ol. Ricin. the oil is obtained from the seeds either by boiling when the oil floats, or by compression the last is the best, when this oil grows rancid it changes colour its action is quick and mild and is given in the fibrile stage of dysentery, cholera infantum, tormina, piles, to lying in women, its taste is disguised either by peppermint water or coffee. Olive oil acts nearly as well and is preferable where poisons have been taken. Flowers of Sulphur in the dose of ʒj or ʒij is a mild laxative, it acts upon the large intestines, useful in chronic rheumatism. Magnesia is a simple earth, and acts as a laxative whether it meets with an acid or not which is not the case with the other earths, it is chiefly obtained from sea water, the calcined is preferable to the carbonated it should not be combined with Sup. Tart. Potass. Carbon or charcoal obviates costiveness and is a powerful antiseptic in dyspepsia a tablespoonful twice a day, in fetid ulcerations of the fauces, in fetid discharges in dysentery, the charcoal poultice corrects fetid ulcers and burnt it is the best dentifice. The Neutral salts are useful laxatives in febrile affections and in diseases of the head. Cathartics. Rhubarb in a close of ʒss or ʒi is an effectual cathartic and its operation does not create a feverish disposition K. Rhei is an excellent remedy in dyspepsia. Rachix Jalapa its activity depends on its resin. a very effectual purgative in dropsy is a combination of Jalap and Cremor Tartar. December 24. Dr. Mitchill's Lecture. The anatomy of a vegetable trunk exemplified in a section of discotyledonous plants. 1st- Medulla, pith the central part, softer than the rest. 2. Lignum, wood proper, complete wood, timber. 3. Alburnum, sap wood, incomplete wood. 4. Cambrum incipient bark, that which supplies new bark when denuded. 5. Liber. inner bark, used formerly to write upon with a style. 6. Cortex. bark proper, used in manufactures and in pharmacy. 7. Epidermis. cuticle, covering to protect the trunk. Animal skins are prepared for tanning by maceration, the tannin of the bark unites with the gelatin of the skin. The several kinds of the trunk are the following. viz - A. Caulis. trunk supporting the leaves and flowers. B. Culines. culm. peculiar to grasses. C. Scarpus. trunk supporting fructification. D. Pedunculus, footstalk. supporting fructification E. Petallus. footstalk supporting the leaves. F. Frans, a species of trunk, a substitute for branches. G. Stipes, the base of the frond. H. Ramus, branch, subdivison of the trunk. Dr. Macneven's Lecture. Carbon or Charcoal when pure is without taste or smell, and for the most part black, heat has no effect on it, when air is excluded. Diamonds consist of indurated carbon and possess great refractibility and are very combustible. Carbon absorbs all the acids the lower the temperature, the greater the absorption, for heat increases the elasticity the absorption depends on the porosity of the woods furnishing charcoal Carbon forms the greatest part of animal and vegetable matter, it is found imbedded in the earth, and is then called coal, and is obtained from peat, resins and oils when impure it contains hydrogen, and is of great use, as fuel, for correcting impure water, and smelting metals, mixed with iron it forms steel. Carbon burnt in oxygen gas converts it into carb. ac. gas, and is of the same volume and weight that the oxygen was, this gas is called chock dam on account of its suffocating quality, and is found in low places as wells &c it is a poison and unfit for respiration or combustion, it is obtained in large quantities from chalk and marble by the acids, its specific gravity is much greater than atmospheric air, and on this account it can be poured from one vessel to another the same as water, immediately displacing the atmospheric air by its greater gravity it immediately extinguishes flame. December 27. Dr. Mitchill's Lecture. Fulera or appendages of Vegetables sometimes called props consisting of. 1. Stipula, an appendage to the leaf or footstalk supporting the leaf. 2. Bractea, floral leaf, supporting the peduncle of the flower. 3. Spina, thorn, a sharp excrescence of wood. 4. Aculcus, prickle attached to the cuticle as in the rose. 5. Cinhus, tendril, clasping other objects to support it, as peas &c. vines. 6 Glandula, gland, excretory duct of vegetables, the same as the scab on the fore leg of horses and swine, the diseases of swine cured by opening this scab. 7. Pilus, hair. excretory ducts on the surface of leaves. Count Rumford discovered that sharp points of any substance placed under water in the rays of the sun evolve bubbles of oxygenous gas. 8. Pubis, down, excretory ducts. Dr. Macneven's Lecture. Carbon is insoluble in water, undergoes no change in the most intense heat, is a good conductor of electricity and a bad conductor of caloric it destroys all odours and is therefore made use of to purify water and spirits and to deprive them of their disagreeable flavours the reason why water becomes foul in casks is that it decomposes a portion of vegetable matter, charcoal has a strong affinity for moisture. Plumbago is a composition of carbon and iron of which lead pencils are made it is a good conductor of electricity. Diamond is very combustible but cannot be melted. Carbon unites with hydrogen forming carburetted hydrogen, this is generated in stagnant pools, which is deleterious it burns in contact with common air, with oxygen it detonates, it exists in coal mines, and is used for lights in manufactories. December 28. Dr. Michill's Lecture. Inflorescence of Vegetables or their made of Flowering. 1. Verticillus, whurl, the manner in which flowers surround the stalk. 2. Racemus, cluster, flowers growing in clusters. 3. Spina, spike supporting fructification on the end. 4. Corymbus, corymb, growing upon a number of footstalks. 5. Fasciculus, bundle, footstalks in bundles. 6. Capitilum, fructification in globular heads. 7. Umbella, umbel, so called from a fanciful resemblance to an umbrella most of these are venomous but their poisonous qualities may be altered by domestication as in the carrot, parsnip &c. 8. Cyma, cyme very nearly resembling the umbel. 9. Pannicula, pannicle. 10. Thyrsus, bundle, open sparse pannicles. Leaves of Vegetables. Folia are considered according as they are 1. Simple, or a footstalk with one leaf. 2. Compound, a footstalk with more leaves. 3. Determinate. the relation which they have to the plants. The reason why leaves fall off in autumn is the substraction of Caloric at that season, if they do not lose their leaves they are called Sempivernal, or evergreens. Flowers are the generation organs, and leaves the respiratory organs of plants. Dr. Darwin supposed that leaves were furnished with arteries and veins, passing through the footstalk to carry them their nourishment. Dr. M. thinks that Oxygen enters both by the stomach and lungs and also that Arote enters the circulation, and is as much a pabulum vita as oxygen itself, in respiration oxygen unites with the carbon which is evolved from the lungs, forming. Carb. ac. has. Some contend that Oxygen is taken in by the stomach alone. Many animals appear luminous which is owing to their parting with their redundant light Dr. Macneven's Lecture. Carb. Potass is composed of 31 71/100 acid and 68 29/100 base this turns vegetable blues green and effervesces with acid Mercury absorbs many times its bulk of Carb. ac. gas before it becomes saturated to prove the purity of Alkali, first determine have much acid a given quantity of acid will take up this for a standard, then afterwards by this test you can discover the purity of any alkali. Sub carb. potass deliquesces in the air, and retains its Carb. ac. gas at the highest temperature, it has a strong alkaline taste, more carb. ac. gas may be united by compression forming the Bicarb potass, which is the best antacid that can be used, also for the effervescent draught, it does not deliquesce in the air but requires four times its weight of water to deliquesce it. Carb. Soda consists of 42 acid, and 58 base, with a double quantity of acid it forms the Bicarbonate of Soda. Carb. ac. gas has a strong affinity for Ammonia they both exist in a gaseous state, yet their union forms a solid the Carbon. Ammon. Sal. Ammoniac consists of Ammonia and Muriatic acid. 2 vol of Alkaline gas and 1 Carb. ac. gas forms the Sub. carb. Ammon. this loses some of its weight by exposure to the air. Carb. ac. unites also with the earth as with Barytes forming Carb. Barytes which is a poison it is composed of 22. acid. 78. base. Chalk and marble are Carbonates of Lime. Lime water attracts Carb. ac. gas from the atmosphere, which forms a crust, and afterwards precipitates. Liquid Magnesia is made by forcing Carb. ac. gas into magnesia by compression it is an excellent medicine, as a laxative. December 29. Dr. Mitchill's Lecture. Simple leaves differ from each other and are divided into. 1. Circumscriptio, the outline of plants. 2. Angula, angle, the prominent parts of plants. 3. Sinns. counterpart, the inlets of angles. 4. Apex, the extremity or point of a plant. 5. Margo, margin, or lateral border. 6. Superficies, surface, upper and lower. 7. Substantia the matter of the two sides of the leaf. Compound leaves are such as grow upon one stalk. 1. Structure, articulated, digitated, binated, pinnated &c. 2. Their degree relative to the composition or subdivision The Determinate leaves are divided thus. 1. Locus the point of insertion. 2. Situs, the deposition of leaves on the trunk as thick or sparse &c. 3. Susertio. the place where it is inserted. 4. Directio, whether adverse or oblique to the sun, or horizontal. Fructification of plants, a complete [crossed out] flower consists of 7 parts. 1. Calix, flower cup, 2. Corolla, wreath. 3 Stamen. hive. 4. Pistil. 5. Pericarpium, inclosure. 6 Semen seed. 7. Receptacutum receptacle. Dr Macneven's Lecture. Worms are of different kinds. the Ascaris is generally found in the rectum, the lumbricus in the smaller intestines and the tenia which is sometimes ten feet long in the whole tract of the intestines, Hydatids are also animals, and are found in different parts of the body, the are transparent bodies. Dr. M. was once called to deliver a woman, but instead of a fetus a bunch of hydatids were extracted. There are two opinions respecting worms some supposing them taken in to the body and others that they are generated in the body Dr. M. is of the latter opinion they are found in almost every part of the body, and often perforate the intestines. Every thing that weakens digestion favours their production, and children and females are the most subject to them. they produce local and sympathetic effects, and diseases caused by them often assume the forms of nausea, colic, vertigo, epilepsy, bilious vomiting, and fever, the symptoms of worms are swelling of the abdomen, alternation of looseness and constipation, emaciation, irregular pulse, fetid breath, slimy stools, dry cough, tenesmus, itching of the nose and anus and many anomalous symptoms. Anthelmentics act in different ways, some as poisons, some as evacuants, some mechanically, and some indirectly, that is by strengthening the alimentary canal. December 30. Dr. Mitchill's Lecture. 1 The Calyx or flower cup is of several forms, and it thus named. A. Brianthium. situated at the base of the flower, embracing it. B. Involucrum. flower cup peculiar to umbelliferous plants. C. Amentum, scaly flower cup, containing the fructification. D. Spatha, peculiar to pals, onions &c. E. Gluma. peculiar to grasses. F. Calyptra. peculiar to mosses. G. Volva. peculiar to fungi. 2. Corolla, wreath, the coloured part which consists of one or more petals, called Monopetalous and Polypetalous. 1. Monopetalous, of one petal, which petal is divided into Tubes, tube, or its upper part, and into Limb, or its lower part. 2. Polypetalous, of many petals, which petals are divided into Unguis or claw, that part attached to the plant, and into Lamina, or its expanded part. Monopetalous plants are divided according to the form of their petals into 1. Camparttata. resembling a bell. 2. Infundibuliforme, resembling a tunnel. 3. Ringeus, resembling a laughing mouth. 4. Personata. 5. Hypocraterforme, resembling a salver. 6. Protata. like a wheel. Polypitalous plants are called Pappillionacea. resembling a butterfly. Flowers are called Lillaceous, resembling a lilly and Rosaceous from their resemblance to a rose. Dr. Macneven's Lecture. Put two vials into a scale one containing a solution of alkali, and one of acid, and equipoise them, then mix the two together, a bush effervescence will take place, with an extrication of carb. ac. gas, then weight them and you will find that they have lost a great deal of weight. Boron is a simple inflammable, with oxygen it forms Bor. ac. which is a hard white substance, greasy. Boron is insoluble in water, is of a greenish brown colour, no taste, neither feasible nor volatile, is soluble in ether and oil, Boracie ac. is the sedative salt of Hombers, by fusion a transparent glass is formed. Bor. ac. with salifiable bases forms borates. Sub. bor. sod. or common borax has a styptic taste and effloresces in the air, it is used as a gargle in Apthae of children Potassa has a strong affinity for Oxygen. January 3. 1820. Dr. Macneven's Lecture. Metals are very brilliant bodies in an aggregate state they are simple bodies they are the best conductors of electricity and good conductors of Caloric they combine with oxygen forming oxides which are of a dull colour, and heavier than the metals from which they are formed There are 39 metals, divided into 6 Classes according to their affinity for Oxygen. 1. Those whose nature is dubious. 2. Those which absorb oxygen at the highest temperature. 3. Those which absorb oxygen at the highest temperature, but do not decompose water without a red heat. 4. Those which absorb oxygen at the highest temperature but do not absorb water at all. 5. Those which require a high temperature to unite with oxygen. 6. Those which do not decompose water nor absorb oxygen. Physical properties. They are solid at the common temperature except mercury of different colours of a peculiar taste depending on their power of refracting light, opaque, dense, 1 Pare ductile and 13 brittle, the ductile have tenacity, and their strength depends on their tenacity, they differ in their hardness. Metals have elasticity and sonorosity in proportion to their hardness, and are dilatable by heat, those which [cross out] are most oxydable have most taste and smell, the structure of Metals is various. Chemical properties They are fusible in different degrees of heat, some are infusible some are volatile at a high temperature the most inflammable bodies will not burn in pure hydrogen or nitrogen. They burn with various coloured flames. The atmosphere consists of 21 Oxygen and 79 Nitrogen. Natural State. They are very seldom found pure, they are found in the four following states 1. Pure metals. 2. Oxydated metals. 3. Combined with combustibles as with arsenic and sulphur. 4. Metallic salts, generally the sulphuric, fluoric, phosphoric and carbonic acids with the metals, their uses are very extensive. No nation ever became civilized without the discovery of the metals preceding it. January 4. Dr. Macneven's Lecture. On the galvanic battery Metals burn with different coloured flames. Silver burns with a green flame yet it is not oxydated by its combustion. Some combine with oxygen by mix exposure to the air they form oxides at different temperatures. Water is the great oxydizes of metals. All acids contain oxygen, hence they oxydate metals, the nitric and oxymuriatic acids are the best oxydizes as the affinity of their bases is not great. Equal weights of metals will decompose unequal parts of hydrogen. Iron has a very strong affinity for oxygen. Acids effervesce with metals, but not with oxides, because oxides are already supplied with oxygen. Oxydation is a simple combination combination with oxygen. Some metals require more oxygen than others. Metals unite with oxygen in definite proportions, and different oxides of the same metal require different degrees of acid as Corros. Sub. and Calomel. The quantity of acid which metals require to oxydate them is in proportion to the oxygen which their oxides contain, as oxides contain different quantities of oxygen. January 5. Dr. Macneven's Lecture. Anthelmentics. Poly podium Mas, male fern, has an astringent bitter taste, nauseous smell and is deemed a specific against tania, the patient should be prepared by an emollient gliota then take two or three drachum of the powdered root of the fern to be given in the morning with some strong cathartic afterwards, the tania is generally expelled by the first dose, probably the cure depends on the strength of the cathartic the patient should eat freely, for the worm will attack the intestines if not. Those who live upon indian grain are the most subject to lumbricus, these are very dangerous, as they sometimes perforate the intestines, they are frequently voided by the mouth and anus. The Cabbage bark is the most certain remedy in lumbrici, it is the bark of a tree in Jamaica, though seldom prescribed, it is given in different forms Decoction ℥i of the bark a quart of water, sweetened with sugar it is to be given in proportion to the age of the patient, until nausea is produced. Lime juice is the best antidote when narcotia poisons have been taken. Dolichos pruriens. cow itch. the hairy substance on the pod is serviceable in lumbrici, a cathartic to be given afterwards. Calomel should always be an ingredient in purgatives for worms. Dr. M. has used the Dolichos with great success, its action is mechanical. Spigelia. pink root, is a good vermifuge, a vomit should be premised, and a laxative given with it. Chenapodium has a bitter taste, and is active in a small dose, the whole plant may be used. Dr. Heberden relates a case of worms cured by enormous doses of salt, after other remedies had failed, he took two pounds of salt dissolved in a little water in less than an hour, which induced strangury and other complaints, the next day he took the same quantity which induced the same complaints, but his other complaints were gradually cured. Tin is a good vermifuge, its operation is partly mechanical, and its virtues are also owing to the hydrogen which is given out in the intestines, if sulphur is present Sulphurtted hydrogen will be formed. Iron filings also give out hydrogen and those are good vermifuges. Sulpuric ether in conjunction with fern coat is used with great success in France, afterwards a dose of Castor oil should be given. January 6. Dr. Macneven's Lecture. Specific gravity of bodies is determined by a comparison of the weight of one body with another both must be of the same bulk, as per example a cubic inch of water, and of iron, would be as 1 to 7. Distilled water is generally made use of to ascertain the specific gravity of bodies any substance weights less in water than in the air, because water resists pressure. We obtain the specific gravity of bodies by first weighting them in the air, and afterwards in water, and then divide the weight of the body in air, by the quantity of water displaced, and the quotient will give the specific gravity. The following experiment was made in an hydraulic scale, a piece of metal was put in the scale and weighted in the air its weight was 115, then it was weighted in water, and its weight found to be 100, new to find its specific gravity, divide 100 its weight in air by 15 its loss in water, and the quantity will be the specific gravity, hence when any difficulty occurs in distinguishing metals, for some resemble each other in colour &c., you may determine them by referring to tables of specific gravities To find the specific gravity of fluids, first fill a vessel with distilled water, and weigh it, then fill it with the liquid, whose weight you wish to ascertain, and weigh it, the difference of their weights will give its specific gravity; another made is to immerse it in distilled water, its specific gravity will be determined by its relative weight to the water. The Hydrometer is a graduated glass tube to weigh liquids. The goodness of acids may be determined by their specific gravities. Temperature must be attended to in determining the specific gravity of Spirits, for they are rarified by heat, and condensed by cold hence experiments of this kind are generally made at a temperature of 60 Fahrenheit. The Specific gravity of gases are found by weighing equal batter of them, and ascertaing their relative weights. Atmospheric air is the standard. Light substances are weighed in water by attaching weights to them. January 7. Dr. Macneven's Lecture. Those Metals that attract water from the air, and absorb heat at the ordinary temperature of these there are manganese, Zinc, iron, and tin. Manganese when united with iron in Manganesia, it consists of 2/3 oxygen, it is of a grayish white colour, of no taste or smell, very brittle. Spec. grav. 8. it is more fusible than iron; a small addition of iron makes it magnetic. it changes colour in the air, it has three definite oxides the protoxide, deutoxide and peroxide. Ammonia separates iron from manganese, the precipitate of protoxides is white, and of peroxides brownish. To obtain oxygen from manganese strong sulph acid must be added and heat applied. The oxide of any metal to become soluble in acids must have 20 parts oxygen in the proportion of 100 parts, the per and protoxides unite with sulphur. ac. forming sulphates, Manganese makes white precipitates with alkalis. Manganese is made use of to obtain oxygen and also chlorine which last destroys all colours, it is also used to clear glasses, and porcelain it contains iron as in shown by the green precipitate which it forms with the prussiate of potash Zinc is obtained in combination with sulphur and oxygen its specific gravity varies, but the best is the lightest, it oxydates in water, but not in air, hence its use to cover houses, it decomposes water, evolving hydrogen gas. Fire converts it into the oxide, which is heavier than the metal by the absorption of oxygen. Zinc unites with chlorine forming the chlorate of zinc Corros. Sublim. consists of chlorine and mercury. January 8. Dr. Macneven's Lecture. Diuretics increase the secretion of the kidnies. there is a great affinity between certain materials and our own organs, hence medicines produce catharsis, diuresis &c. Medicines have peculiar powers on different parts of our bodies. We have a voluntary power over the bladder, owing to connexion with the sympathetic nerve. Some suppose that there is a more direct passage to the bladder than though the circulation, for the ureters of clop have been tied and yet, upon drinking a large quantity of water they pass it copiously, the cure of ascites by cathartics increases this supposition, for the fluid must have been taken up by the lymphatics of the intestines, this passage is supposed to be by the lymphatics. Cold air and cold immersion increase the discharge of urine, as does alcohol. The sensibility of the bladder in old age is more obtuse than in youth. Rollo supposes the primitive seat of diabetes to be in the stomach, it is owing to the unassimilation of the food. Dropsical patients should drink freely. There is a great sympathy between the skin and kidnies. Neutral salts are generally laxative and diuretic, and are injurious in all mucous discharges as in catarrh and gonorrhea. Diuretics act in two ways either by promoting absorption or increasing secretion; whatever promotes perspiration diminishes the secretion of urine to increase it their clothing and cold aspersion on the pubis. The activity of the absorption appears to be in an inverse proportion to the debility of secretion. Diuretics excite the action of the lymphatic system, hence their use in dropsies, in diseases of the chest, they reduce the activity of the system. Particular diuretics. Potassa. Sub. carb. potass has considerable powers. Tart. Potass is much better, and Sup. Tart. Potass. is much more active than either. Nit. Potass. in the dose of ʒi in 24 hours is a powerful diuretic, with Jalap it forms an hydragague much used in dropsy. Spirt. Actha. Nitros. is a very good diuretic in the dose of ℥ss. for an adult. A decoction of parsley root is a very good domestic diuretic. January 11. Dr. Macneven's Lecture. Iron is the most abundant of all minerals and exists in almost all fossils, also in animal and vegetable matter, it is of bluish white colour, its spec. grav. 738/100 Native iron is flexible and cellular, it combines with oxygen, in heat and air having a great affinity for it. Oxygen combines with it in two proportions the protoxide which is formed by burning iron wire in oxygen gas forming a black powder, and the peroxide which is a brownish powder. Native oxides of iron are very numerous. Magnetic ores of iron contain a small quantity of oxygen, they are chiefly met with in primitive forms. Oxides are connected into metals by charcoal it absorbing the oxygen of the oxide, and forming the carb. ac. gas, Salts of iron become red by exposure to the air from the absorption of more oxygen. salts formed with the peroxides do not chrystallize. Iron unites with chlorine forming chlorate of iron. iron wire burnt in chlorine gas forms the perchlorate of iron. Iodine also unites with it. Merc. ac. dissolves the per and protoxides. Sulphur unites with iron in two proportions of owing the black and yellow sulphurets of iron. Iron pyrites by exposure to heat and moisture forms sulphate of iron. Sulphuric ac. unites with the protoxides in the proportion of two acid, and one iron and by heat forms the Sulph. Fer. Oxy sulphurets are obtained by the peroxides in dilute muriatic acid. Phosp. Fer, obtained by Phosphoric acid and iron. Iron unites with carbon, forming carbonates of iron. When Prussic acid is added to solution contain'g iron which is peroxide the precipitate is blue, if protoxide white, this acid is an excellent test of mineral springs containing iron, forming a blue colour, Hydra sulphuret of Ammonia is another test forming a black colour. Chrystallized is made by washing it in dilute acids. January 12. Dr. Michill's Lecture. Continuation of the parts of a flower 3d. Stamen or chive is divided into 3 parts, it is the male organ of the vegetable, the three parts are A. Filamentum or filament conveys nourishment to the Anthera. B. Anthera or secreting organ of the pollen. C. Pollen, or fecundating dust which colour the flower. The Anthera is the vegetable testis, it secretes the vegetable semen or pollen. The Pollen or fecundating fauna varies in all flowers. Moisture causes the anthera to burst with an explosion and at the same time moisture on the female organ attracts the pollen thus moisture is the medium of fecundation. The Pollen is generally yellow and its falling in large quantities from trees in high winds has given rise to the stories of showers of brimstone falling. 4th- Pistillum or pointal is the female organ of generation, it is divided into three parts. A. Germen, the lower part, or immature inclement of the fetus contained in the vegetable uterus. B. Stylus, which is analogous to the fallopian tube in women carrying the pollen to the vegetable uterus. C. Stigma, the top of the style, receiving the pollen. By castrating the male organs in vegetables, or taking away the female organs no impregnation takes place, thus proves the sexual system of plants. Where both organs exist in the same Corolla or Calix. they are called bisexual or hermaphrodite They are called male or female plants according to the situation of the generative organs. Dr. Macneven's Lecture. Scill. marit. or squills is a stimulating diuretic, it acts also on the lungs hence its use in hydrothorax it is more efficacious when combined with Cal. it is applicable in cases of dropsy arising from visceral obstructions, it is also given with the neutral salts, the root is the medicinal part, it is nauseous and intensely bitter to the taste, and very acrid, it should not be given in large doses to those subject to hemorrhoids, it is applicable in all pulmonic affections unattended with inflamn. in cases of dropsy attended with thirst nitre may be joined with it, it is 4/5 stronger in a dried state than when recent. Colchicum autumnale is very acrid in its recent state, an oxymel and syrup are prepared from its root, it is given in gout and rheumatism, and is supposed to be the basis of bean medicinale, a quack remedy used with great success in the above complaints in France, it is found to be an almost invariable remedy in gout, and by many eminent physicians in England is considered a specific. Lobelia syphilitica has cathartic and diuretic qualities, and was supposed though without any foundation to be a remedy for Syphilis is hence its name. Digitalis purpurca, foxglove, the leaves of which are generally made use of, they are bitter, nauseous, and acrid, and should be gathered when the flowers are just opening, Digitalis produces all the effects of the narcotic poisons, and its antidotes are the same as a blister on the stomach stimulants &c. when it once produces diuresis, it continues for several days as ptyalism from mercury It is a very singular fact that persons under the influence of this medicine while standing have their pulse at 140, while sitting at 70, and if they lie down their pulse falls to 40. Digitalis acts more particularly on the absorbent system, and is an excellent remedy in dropsy. Dr. Darwin found it most beneficial in dropsy attended with debility a brought on by intemperance. Dr- Beddoes considered it an almost certain remedy in phthesis, it is given in substance, and tincture. Turpentine, and Balsam, Copaiva have also diuretic qualities and are given in gleet. Cantharides or Spanish flies are diuretic, and are given either in substance or tincture in edematous swellings of cold leucophlegmatic habits. Women after parturition are often subject to an involuntary dribbling of urine, and cantharides given internally, and applied externally in the form of a blister to the perineum effect a cure. January 13. Dr. Mitchill's Lecture. Continuation of the organs of fructfication in plants. 5th. Pericarpium or seed vessel which is in different forms. A. Capsula which bursts determinately to let out the seeds, that is into regular parts as the Datura Stramonium. The pericarp in the form of capsule consists of 4 parts. 1. Valvula, that part between the divisions of the pericarp 2. Discipimentum, a part separating the chambers of the valves. 3. Columella, the central point where the valves unite. 4. Loculamentum, the chamber or place where the seeds reside. B. Siliqua a dry pericarp consisting of two valves which have a partition between them, as the mustard seed. C. Silicula, has the same constitution as the siliqua but differs in shape. None of the siliquose or siliculose plants are poisonous, the antiscorbutic plants are of this kind. D. Legumen, a dry pericarp having no septum, the seeds attached to one side, open determinately as the bean, pea &c. E. Concepticulum, pericarp splitting open one side, showing a part horizontally divided with the seeds attached, as the pleurisy. F. Drupa. a pericarp without any valve inclosing the seed as the stone first, the peach stone for example. G. Pomum, a valveless pulpy pericarp, inclosing a capsule with its seeds as the apple, quince &c. H. Bacca a valueless succulent pericarp inclosing seeds without capsules as the gooseberry currant &c. I. Strobilus a woody pericarp holding the seeds all the coniferae or cone bearing trees are of this kind as the pine &c. J. Pepo, a pericarp having a pulpy substance containing the seeds as the water melon, squash &c. K. Aurantium a pericarp with the seeds laying in the pulp as the lemon, orange and lime. L. Folliculus, a pericarp the seeds of which after its bursting are suspended by a thread for some time as the cucumber tree. M. Syncarpos the fig the pericarp which becomes enlarged forming the first, the seeds are in the centre. N. Cariopois the pericarp which is where the husk adheres to the grain, as barley, rice &c. January 14. Dr. Mitchills Lecture. Continuation of the parts of fructification. Receptaculum is that part in which all the parts unite, or are joined it is divided into 6th- part. A. Receptaculum Proprium, the receptacle peculiar to one flower as the apple and peach, under this lead are the Recep. fructificationis, or hermaphrodite plants. Recep. flour, the male plants where the parts unite. Recep. fructus. where the parts unite in the female plants Recep. Seminum, receptacle of the seeds as in the pineapple. B. Receplaculum commune common to all plants divided into Umbella or umbell, a common receptacle. Umbellicula, or little umbell, which umbells are divided into Simplex where the umbell has only one centre of divergence or Compostia where there are two or more centres of divergence. Cyma, an instance of compound receptacle. Spadix another instance of compound receptacle. Compound flowers have a calyx surrounding a common receptacle. Arctius Lappa, burdock an instance of a common receptacle. A Corn cob an instance of elongated receptacle. The Semen, seed the 7th- part of fructification has been already described. The Gallic acid is a product of disease in bees, and is an excellent test of iron. This with sulphuric acid makes ink and we should be very careful that the acid is not too strong lest it should destroy the paper. Dr. Macneven's Lecture. Iron is of three kinds. Cast iron which is of two kinds light and dark coloured the light coloured is the most brittle. 2. Forged iron. 3. Steel which is a combination of iron and carbon. Iron is formed into steel by burning it with charcoal in a reverberating furnace, the charcoal being absorbed absorbed by the iron. If iron is heated and then suddenly cooled it becomes very hard, the texture of iron is fibrous, steel is laminated, to distinguish iron from steel, drop any acid on the substance you wish to test, if it is steal the acid does not dissolve it owing to its hardness, if it is iron the acid dissolves the iron and does not leave a spot which is the case with steel Staunum, tin has been known from the remotest ages it was mentioned by Moses it is found in the state of an oxide, and is obtained from the oxides by charcoal, it absorbing the oxygen The protoxide is obtained by Ammonia. There are solid as will as fluid acids. The Spec. grav. of tin is of which is seven times the weight of oxygen. Chlorate of tin is made by burning tin in chlorine gas. Oxy. Muriate of tin is obtained by boiling tin in Nitro. Muricatic acid. Protomuriate of tin dropped in a solution of cochincal forms a light scarlet precipitate it is used in the dyeing of sills. Sulphur unites with tin in two proportions forming the protosulphuret, and bisulphuret, the latter has two proportions of sulphur to one proportion tins Cadmium is a metal which has been discovered very lately in 1817 in Zinc, its Spec. grav. 8. Air produces no change unless when heated when it forms an oxide which is soluble in acids the oxide of Cadmium. January 15. Dr, Mitchill's Lecture. 8th- part of Vegetable Fructification. Nectacium or nectary, every part not included in the foregoing descriptions, it is an excrescence from the Corolla which is in different forms. This ends the consideration of vegetable gums. 2d- Gemmae. buds which have been already explained they are Wanting in some as in the Cassia and Mimosa. Deciduous where they exist and fall off as the lilly and saxifas. Foliiferoe, non floriferoe, but producing leaves but not flowers. Foliiferoe et floriferoe bearing both flowers and leaves, as most trees do, this is common to the generality of vegetables Foliiferoe et floriferoe distincta, have flowers on one bud and leaves on another, as the poplar and willow. Foliiferoe et floriferoe faminae. having leaves on one bud and female flowers on the other. Foliiferoe et floriferoe masculine having leaves on one bud, and male flowers on the other. Bus are a succedaneum to keep up vegetable life if other means fail as if the pollen should be lest by wind &c. If you instead the occulus of one tree into another it will become part of it which is called inoculation, they unite through the medium of kindred vegetable juices. Grafting is another made of inoculation by inserting a twig into a tree, this is the means of obtaining a variety of fruits. 3d- Bulbse, bulbs, which have been already explained All bulbous roots will grow in consequence of the nourishment they contain within their substance. Bulbs are divided into implicated, tunicated, and solid. The Arista or beards of oats may be used as hygrometers, water shortens their fibres and afterwards by drying them the fibres elongate by which they move in various directions, This finishes the consideration of Physiological or Philosophical Botany. Dr. Macneven's Lecture. Lythoritriptics or solvents of Calculi Calculus is seldom cured except at the commencement, it has been ascertained that in the Hospitals in Europe are in five die from the operation of stone, principally men, stone are extracted from women by the dilatation of the urethra. The formation of calculi in the different organs containing urine is independent of any specific action. Substances are recorded of the organization of one kidney being destroyed and the other performing the office of both. Sometimes calculi are formed in the beginning of the urethra in the shape of a tunnel, any extraneous matter taken into the bladder will be a nucleus for a stone, they are often mistaken when in the urethra and prostate gland for strictures of the canal, they may be distinguished by the sound. The symptoms of stone in the kidnies are a long continued pain in the region a purulent and discharge, and eventually a destruction of the organization of the kidney, the greatest pain is felt in the passage of the stone through the water a brick coloured sediment in the urine, a retraction of the testicle with a numbness of the thigh. The symptoms of stone in the bladder are an itching and pain at the extremity of the penis, a sudden stoppage of the urine when it is flowing. The tendency to form stone is generally preceded by an impaired state of digestion, as flatulence and acidity. All calculi are depositions from the urine, their colour and spec. grav. differ they are of different kinds and are divided into. 1. Lithic or Uric acid which is of a brown colour and smooth it is dissolvable in the caustic alkalis, and in the Nit. ac. Gouty persons during their paroxysms generally void a large quantity of lithic acid in their urine. Lithic ac. always exists more or less in the urine, and it is this substance which forms the sediment in some fever. it has acid properties and reddens litmus paper. 2. Earthy phosphates which are white and friable, and when pulverised are soluble in the Nit. and Mur. acids. 3. Ammoniaco. Magnesia. phosphates. a compound of Ammon. Magnes. and Phosp. ac. which is of a white colour. 4. Fresible calculi are a compound of Ammon. Magnes. phos. and phosp. cale. they are more easily pulverised than any other calculi, and it is this substance which is found in the fingers of gouty persons. 5. Mulberry calculi so called from their colour, they consist of the Oxalate of lime, and are not soluble in acids. 6. Cystic oxide which resembles the triple calculus or Ammon. Magnes. phos. and is more soluble than any other calculi. Carb. Ammon. enters into its composition of course it contains oxygen whence its name. January 17. Dr. Mitchills Lecture. 2d- part of the course. Systematic Botany. Arrangement of Vegetables in Classes. Orders, Genera, Species and Varieties. The Linnean or Sexual System adopted from which the Classification is made. Examples to support the Sexual system. Planta Decline out Dioicous having two beds, or the male and female flowers in different parts, the most common instance is the Humulus. Lupulus, hop, the spinage is another instance where the male flower is on one part, and the female on another, also hemp and palm trees are examples. Planta Monoclines or Monoicous, plants having one bed, or one on different parts of the same plant, instances, indian corn, cucumber, the melon family, squashes. The Zizania Aquatica grows on the banks of the Michigan, it is an excellent bread corn called wild rice by the Indians many tribes live upon it, it produces spoutaneous harvests, it grows on the banks of the river, and promises to be an excellent substitute for indian corn. Bisexual plants have been already described. Sexual Denominations. Flowers having anthers are male the filament is sometimes wanting. Flowers having stigmata are female, the style sometimes wanting. Flowers having anthers and stigmata are bisexual. Plants having male flowers are Male. Plants having female flowers are Female. Plants having both male and female flowers are Bisexual. Plants having male and female flowers distinct are called Androgynous. Willows of this country are all female. Plants having Bisexual of flowers in one part, and male or female flowers on another part are called Polygamous plants. Analogy between Animal and Vegetable organs of generation in a bisexual plant. Calyx Analagous to the Pudenda externa. Corolla " " " Nympha. Filamenta " " " Vasa spermatica. Antera " " " Testes. Pollen Analogous to the Sperma. Stigma " " " Os uteri. Stylus " " " Tubus Fallopianus. Germen " " " Ovarium. Semen " " " Ovum. Pericarpium " " " Uterus gravidus. Vegetables are disseminated over the globe by their seeds in various ways as. 1. Currents of air. Seeds have been carried from this country to Europe by their pappi and aloe. 2. Rivers and streams, an instance in the fowl medow grass of Conneticut, which first grew where the remains of a bird were found, and afterwards was distributed by the Conneticut river. Another instance is a grass in Virginia which only grows on the margin of rivers as high as the tide rises 3. Currents in the ocean. Seeds have been carried by the Gulf streams to the Western parts of Europe. 4. Migrations of men, instances of this are all the garden plants, coffee, indian corn, and all the exotics. 5. Reclamation from a wild state. 6. Pappus by which they are often carried through the air. 7. Aloe by which also they fly. 8. Elasticity of the Capsule. January 18. Dr. Mitchills Lecture. The Classificaton of Plants is founded on the parts of Fructication in 4 points. 1. Numerus, the number of the parts. 2. Figura, the figure of the different parts. 3. Situs, the situation of the different parts. 4. Proportio, the relative proportion of the parts. Other qualities of plants have been rejected and been considered uncertain, they are not therefore Botanical marks - viz - 1. Colour. 2. Smell. 3. Taste. 4. Weight. 5. Magnitude. The parts of Fructication are 7. they have the following forms or modifications viz - Calyx has 7 modifications Corolla " 2 " Stamen " 3 " Pistill " 3 " Pericap " 8 " Seed " 4 " Receptacle " 4 " In the System of Linneus Plants are divided into 24 Classes not including the Palmae. They are called 1. Monandria, plants having one Stamen. 2. Dicandria " " two Stamina. as the Sage 3. Triandria " " three " as bread corn. 4. Tetandria having four Stamens, as the Dog wood tree. 5. Pentandria " five " as the Jalap and Cinchona. 6. Hexandria " six equal Stamens as the Lililaceous plants. 7. Heptandria " seven Stamens. 8. Octandria " eight " 9. Eniandria " nine " as the family of the Lauri. 10. Dicandria " ten " as the Evergreens. Plants never have eleven Stamens in a natural state if they are met with they are Lusi nature. 11. Dodicandria comprehend all plants between twelve and twenty, they are very irregular. 12. Icosandria having twenty Stamens always situated on the brim of the Calyx as the rose, apple, peach and other fruit, also those which have more than twenty Stamens situated on the brim of the Calyx. 13. Polandria, having more than twenty Stamens but not on the Calyx, generally on the Receptacle as the tulip, poppy. 14. Didynamia, having four Stamens. two long, and two short. Dr. Macneven's lecture. Those Metals which do not absorb water at all, and attract Oxygen at a high temperature only, there are five of these, one is Arsenic which is generally obtained from a mine in Bohemia. The Chinese use it in syphilis. Arsenic is obtained from white arsenic or as is generally called white oxide of arsenic. When Carbon and an oxide are heated the charcoal absorb the Oxygen leaving the metal. The Alkalis or black flux is added to arsenic when we wish to sublime to retain it as it is very volatile. The metal is of a bright steel colour, very brittle its spec. grav. 89/10, very volatile, vapour emits a strong garlic smell, when melted in the air the fumes are white oxide of arsenic owing to its attraction for oxygen the metal and all its compounds are virulent poisions, the metal has a foliated laminated texture, and has a strong affinity for Oxygen forming two compunds Arsenous and Arsenic acids which have a sour taste are soluble in water and unite with other metals. Arsenous acid is of a white colour, and capable of being formed from combustion of the metal, its spec. grav. 37/10. acrid taste and of a nauseous sweetness. Arsenic produces inflamy. and gangrene in the stomach, and is fatal when applied to wounds hence it ought not be used in cancerous affect it also acts on the Nervous system for it sometimes causes death without inflamy. the remedies are emetics copious dilution and every thing to obviate inflamy. Arsenic is distinguished from Corros. Sublimiate. by its almost insolubility in water Salts obtained with the Arsenous acid are called Arsenites, and from Arsenic acid Arseniates by boiling Alkalis or the earths with the acids. The following are some of the tests of arsenic. viz A solution of Arsenite of potash. and a solution of Sulphate of copper together form an apple green precipitate the best way is to add to the solution of arsenic some solution of potash and then add some arsenous acid when the apple green precipitate is formed the carb. potass forms a bright green precipitate and the sub. carb. potass. a pale green precipitate. On opening the stomach examine the villous coat of the stomach, and then examine the contents which should be slowly evaporated. Nit. Potass. lunar caustic. when brought in contact with Arsenitc of potash is decomposed that is both and an arsenite of silva is formed which is first a white and afterwards a yellow precipitate. Sulphuretted hydrogen is another test of arsenic, it forms a yellow precipitate. In controversies however respecting poisons nothing should be relied on but the reduction of the metal which is thus effected. Put the suspected parts in a tube of glass and then close which is easily done by heat, then sublime it by heat, the white powder should then be thrown on a hot iron and if a garlic smell is emitted it is a sore test this must be the metal however for the white oxide does not emit a smell. Alkalis or charcoal must be added to absorb the oxygen in it. Arsenic acid is obtained from 4 parts Muriatic. ac. 24 parts Nitric. ac. and Arsenous. ac. the oxygen of Arsenic acid and Arsenous acid is as 3 to 2. with alkalis and earths it forms Arseniates. There are found several natural Arseniates as the Arseniates of iron and copper which are found in Cornwell also the Arseniates of lead and cobalt. January 19. Dr. Mitchills Lecture. Continuation of the Classes. 15. Tetradynamia having six Stamens 4 long and 2 short. 16. Monodelphia, all the Anthers united in a cylinder. 17. Diadelphia, ten Anthers nine distinct, one by itself as the pea. 18. Polydelphia stamens arising in two or three clusters. 19. Syngenesia five distinct Stamens arising from the Corolla Anthers united in a cylinder, common Calyx, and Receptaculum. 20. Gunandria, male and female flowers on the same receptacle. 21. Monocea, male and female flowers separated. 22. Diascia, where the parts of fructification are on distinct plants as in the hemp. 23. Polygamia with flowers producing male and also female, also bisexual as the ash and maple. 24. Criptogamia, inconspicerous parts as the great families of the Fibres, Fungi, Alga and Musci. The Palmae are not included in these 24 Classes. January 20. Dr. Mitchill's Lecture. As the Classes are mostly taken from the male parts of Fructification, so that the Orders are chiefly taken from the female parts. In examining a plant first look at the Stamens which will give the Class and then at the Pistils which will give the Order. these are the Orders viz. 1. Manogynia having one Pistil. 2. Digynia " two Pistils. 3. Trygynia " three " 4. Tetragynia " four " 5. Pentagynia " five " 6. Hexagynia " six " 7. Heptagynia " seven " 8. Octagynia " eight " and so on " Polgynia " many " The number of Pistils is counted from the base of the style and when there is no style, from the base of the stigma. In the Class Didynamia the 2 Orders are taken from the figure of the pistil as naked and covered seeds. These having naked seeds are remarkable for their aromatic and medicinal qualities. Those of the Order Angiaspermia or covered seeds as the Digitalis purpurca. fox glove. In the Class Tetradynamia the 2 Orders Siliquosa and Siliculosa are taken from the condition of the seeds. The Orders of the Classes Monodelphia, Diadelphia, Polydelphia, Gunandria, Monoecia and Diacia are taken from the male parts of Fructification. The 5 Orders of the Class Syngenesia or Compound flowers are taken from the Polygamy which exists in them viz 1. Polygamia Equalis: the florets all equal and fertile, the central part is called the Discus or dise, and the part surrounding it the Radius or ray as in the dandelion. 2. Polygamia Superflua. Hermaphrodite and futile florets in the centre or dise and female florets in the radius which are also fertile and therefore superfluous as the tansy. 3. Polygamia Frustanca. Hermaphrodite florets in the disc and neuter ones in the radius as the sun of flower. 4. Polygamia Necessaria. Hermaphrodite florets in the disc but barren as the marygold. 5. Polygamia Segregata, the florets separated by partial calyxes or partial calyxes in some common calyx. Dr. Macneven's Lecture. Arsenate of potash forms precipitates with almost all the salts, with the salt of Manganese a reddish brown precipitate, with permuriate of iron a brownish precip. with the protoxide of iron no precipitate is found at first. Sulphuratted hydrogen is a test arsenic. Put ʒi Sulph. Antimon. and ʒij Sulphuric acid into a retort. the neck which leads into a solution of arsenous acid, then apply heat, and sulphuretted hydrogen passes over and mixing with the solution turns it of a lemon yellow colour. Arsenic unites with Chlorine forming Chlorate of arsenic which is a white deliquescent compound the chlorine should be passed through warm water of about 90 or 100 for cold water absorbs it. The Chlorate of arsenic is also formed by uniting 6 parts Menias Hydrarg with one Arsenic. Chlorate of arsenic is of a butycaceous consistence, hence it is sometimes called butter of arsenic as antimony is for the same reason. Chlorate of arsenic is decomposed by water forming Muriatric acid from the liberation of hydrogen in the water which unites with the chlorine. Hydrogen is the lightest of all bodies and decomposes arsenic though it is a very heavy metal. If a bubble of oxygen gas is passed into phosphuretted hydrogen gas combustion is produced with the evolution of heat and light, Arsenic unites with Iodine forming the Iodate of arsenic. Arsenic and Sulphur unite forming Sulphur of Arsenic. Orpiment or the yellow sulphuret of arsenic is as poisonous as the metal itself. There is also a Sulphurate of Arsenic and iron, there is no Carbonate of arsenic Sulphur has been used as an antidote to Arsenic supposing that it would neutralise it, but it is found that the Sulphurates of arsenic are equally poisonous as the metal itself. Arsenic forms alloys with other metals. The white oxide of arsenic is generally made use of as a poison, and it is a common test to burn it between Copper if it is the white oxide no white stain will be made but first the white oxide should be reduced to the pure metal by burning it in charcoal, and then by burning it between copper a white stain is left by the union of the two match forming an alloy. Chrome unites with oxygen forming Chromic acid. Chromic acid unites bases forming Chromates. The Chromate of potash is of a yellow colour. The Chromate of silver is of brown colour. The Chromate of lead makes a beautiful yellow pigment which has superseded other paints of that colour the chromate of lead may be mixed with the carbonate of lead without having its colour impaired it will however dilute it. The peroxide of Chrome is red. January 22. Dr. Post in his lecture of to day acknowledged that he was unacquainted with the manner in which impregnation takes place it is supposed by some that the uterus receives the seed and that it is taken up by the Fallopian tubes and from them received by the Ovaria, now in the first place the sides of the womb adhere or are in contact, if the semen should be received into the uterus how is it to get into the Ovaria? the natural action of the fallopian tubes is to convey the egg when impregnated into the uterus, then if it carries the semen to the uterus must be by a retrograde action again the Ovaria are attached to the broad ligaments which are duplicatures of peritoneum and the fimbria are considerably below the ovaria, suppose however the tubes should be acted and the fimbria embrace the Ovaria, there is a covering of the Ovaria which would prevent its passage different parts of animals as teeth and bones have been found in the Ovaria without copulation having taken place the egg also is a strong instance to prove that the fetus may be formed without copulation. Menstruation prepares the blood and womb for impregnation Dr. Post supposes that blood has a vital principle, in this he agrees with Hunter who says that new vessels will be formed in the blood to carry on the circulation this is his principal argument. Bell contends that those new vessels are merely elongations of the other vessels, and that or wounds new vessels are never formed. Dr. Post says that there is no communication between the maternal and fatal parts of the Placenta for the Decidua divides the two portions, he showed preparations where the injections had not passed between the two portions if they ever pass it must be by extravasation or rupture of the decidua. Dr. Hosack maintains that there is a direct communication that is that the arteries of the mother send their blood to the Placenta and is taken up by the veins, and that injections have passed between the maternal and fatal portions. it is a feet that there will be little hemorrhage hemorrhage from the mother if the cord is divided the cord arises from the fatal portion. Dr. Post also supposes that the Placenta performs the office of the lungs, in decarbonizing the blood. It should be mentioned that one opinion is that in impregnation the semen is taken up by the absorbents of the vagina, mixes with the blood and as some must pass through the ovaria it might act on them and make them evolve their ova, this is somewhat plausible. Dr. Mitchill's Lecture. The Two Classes Polydelphia and Polygamia are somewhat uncertain in their characters and have been rejected by some modern Botanists. To find out what a plant is first examine its character to find its Class and then its Order you may also determine its Genus and Species in this manner. A magnifying glass is necessary to examine the minute parts of a plant. The character of a plant must be determined by its flower. Where you cannot draw, you may delineate plants in this manner. Take some good paper and oil it until it is penetrated with it by which it becomes transparent then hold the paper over a lamp until it is smutted with charcoal then place a leaf or any other part on it, and it will attract the greasy soot and leave the impression. Insects have particular plants on which they feed and leave their eggs, thus the butterfly is almost universally found on the fennel hence you often know that you are in the neighbourhood of particular plants by the insects you see. Dr. M. recommended the following books on Botany System of Vegetables by the Litchfield Society one of whom was Dr. Darwin. Genera Plantarum of Linneus in Latin. Rich's Synopsis of American plants a very useful manual. Muhlenbergs Catalogue. Nuthal's System of the Genera of North American plants to the year 1817. Dr. Post when speaking of the brain took occasion to mention the theory and supposed discoveries of Gall and Spurseim They suppose that the Medulla Oblongata is the seat of the sinus &c. and attempt to prove that the Medullary and Cortical part of the brain comprehending the Cerebrum and Cerebellum is an appendage to the Medulla Oblongata and that certain marks or configurations of the external skull indicate certain propensities or show disposition and mental capacity. Dr. P. does not consider that this deserves any consideration. The brain is made up of Cortical or Cenautious matter and of Medullary or white matter. Where the brain is Cortical externally it is medullary within and vice versa. There are ten pair of nerves arising from the brain and thirty from the Medulla Spinalis. The Medulla Spinals terminates in a bundle of nerves called Cauda Equina. Dr Macneven's Lecture. All the apparatus that is necessary to determine the different kinds of Calculi is a blow pipe which may be of glass or brass, a candle and a small pair of the tongs, the best are made of platuia because it resists fire. All calculous patients discharge more or less and if you can obtain a particle of the six of a pins head it is sufficient you distinguish them in the following manner. 1. Lithic or Uric acid which is of a brownish colour, very hard generally of an coal figure, first before the blow pipe it first becomes flat, then blackens omits a peculiar colour, and burns leaving an Alkaline ashes. It may also be distinguished by its solubility in caustic alkali which is effected by applying gentle heat which dissolves it, the residuum may be precipitated by every acid into a white powder a chap or two of Nitric acid on it will dissolve it, turning it of a pink colour by mixing it with water it will give it the same colour by then adding an alkali the colour may be taken away. 2. Phosphate of lime not use fuse before the blow pipe, but it first blackens owing to the combustion of the animal matter then it whitens, it is soluble in dilute Muriatic acid. Oxylate of Ammonia will decompose and form a precipitate. 3. Ammon. Magnes. Phosphate, or triple calculus which has two bases united to one acid the Phosp. it has a sparkling chrystalline appearance a few particles of it burnt in a gentle heat emit a pungent smell of Ammon. by adding caustic potash the same smell is given out, by the heat of the blow pipe the Ammon. is volatilized, leaving the Phosphate of magnesia which is soluble in dilute acids, it may be recomposed by adding Ammon. 4. Fusible Calculus so called because it fuses before the blow pipe at a moderate heat, it is a compound of lime and magnesia both of which are infusible separately. You may separate the lime and magnesia by the oxalate of Ammon. This Calculus is soluble in all the acids, especially the Muriatic. 5. Mulberry Calculus which is of a brown tubercular appearance, it consists of the oxolate of time, it expands and efferesces in heat, turning into a white substance. this is proved to be an alkali by the usual tests. P. Cystic oxide. This is distinguished from other calculi by being unstratified, and soluble bath in acids and alkalis. Compound Calculi may be distinguished by the confusion of their results when analyzed. Calculi are unorganized substances having no life and are therefore subject to the laws of affinity. The disease of Stone may be mitigated and the further progress prevented though it cannot be cured when very far advanced by medicine. The Calculi most commonly met with are the Phosphate of lime, the Phosphate of Magnesia, and the lithic acid. The earthly salts are soluble in Phosphoric acid, hence the reason why it is always found in urine. If urine be kept two or three days the Ammon. neutralises the Phosphoric acid and the earthly salts are not kept in solution but Ammon. Magnes. Phosphorate is formed. If you add an alkali to urine already abounding with it a precipitate is formed this may also be a test of the preponderance of an acid, as in that case a quantity of alkali might be added and the super abundant acid would neutralise it and when precipitated it would be an evidence of its saturation. The two great Chemical principles to be attended to are when Lithic acid is present Alkalis should be given, when the Earthy phosphates are present Acids should be adminstrated. Some deny the conveyance of either acids or alkalis to the bladder, but any one may prove it on himself by taking alkalis for two or three days, the urine will be alkaline as may be proved by the usual test. Dr. M. thinks it is conveyed to the urinary passages in a more direct way than through the circulation. It is more difficult to detect acids when administrated as the urine is always acid but Mr. Brand has discovered the Muriatic and Sulphuric acids in the urine. Alkalis independent of their solvent quality when combined with Opium sooth irritation. A difficulty occurs in treating compound calculi but you may often by examining the sediment in urine determine what predominates and act accordingly. In Gravel especially during its passage active cathartics are proper, also for gouty persons who often pass gravel during their paroxysms. The administration of opium and turpentine is often followed by the discharge of Lithic acid. Calculous affections are said to be more frequent in cold countries than in warm ones, perspiration also retards the formation of calculi, hence the state of the skin should be attended to. January 24. Dr. Post says that females when pregnant have died of hemorrhage without the childs suffering. Inject the uterus and the maternal part of the placenta will be injected but not the fatal portion also inject by the umbilical vein and the fatal portion will be injected but not the maternal part. Dr. P related the following case. A woman whom he attended had the usual symptoms of pregnancy until 5 months then in consequence of great fatigue the symptoms of pregnancy ceased she was no longer sensible of the stirring of the child and her abdomen which was considerably enlarged began to diminish in size, she thought she must have been mistaken. 5 months afterwards making 10 months from conception she was taken with labour pains and was delivered of a child exhibiting the usual appearance of a five month's abortion, there were no symptoms of decomposition, the membranes were natural, and upon detaching the placenta the usual hemorrhage occured showing that the circulation had been carried on during the last five months Dr. P. exhibited the fetus and membranes to the Class. He also mentioned the following case which was communicated to him from the Southward. A child a girl of twelve years old was taken with pain in the bowels, and after some time she passed some platted hair from the rectum, at length a tumor presented at the rectum and was taken out, examined and found to contain a part of a child as the head, cervical vertebrae, and four canine teeth which were of the usual six in the fetus, after the delivery of this she regained her health which during her whole life had been very infirm. Dr. P. showed the fetus and teeth. He supposes this was a case where one ovum was enclosed within the other of which there have been several instances, and that one grew to the ordinary size while the other, owing to deficient nourishment soon perished and became attached to the other and in process of time was discharged. Dr. P. showed two preparations where the umbilical cord had three knots in it. Dr. Mitchills Lecture. Exercise on the Hand flower tree of Mexico which is a very rare tree. Class Monodelphia. Order Pentanshia. Genus Chiranthodendrion or Manata Species Pentadactylon, it has the following parts. 1. Calyrx - none unless the Bractea is so called. 2. Corolla Monopetalous, campanulata, persistent, quinquefid, the division oblong and fleshy. 3. Stamens, five, smooth and crooked, somewhat unequal in length, united below in a cylinder. Another oblong, wavy, situated on the beck of the filaments, and shorter than the Pistil. Germ elevated, oval, five sided. Style angular, rather enlarged, curved at the top, and shorter than the filament. 4. Stigma simple and pointed. 5. Pericarp. a woody capsule, oblong, elliptical, having five sides five lobes, five cells, and five excavations around the Germ. 6. Receptacle figured like the Capsule to which it adheres. 7. Seed, ten or twelve on each locutament, oval, smooth, shining, black, with a small spherical gland near the base enwrapped in a sort of hair! Observation. It has considerable resemblance to the Bombax of Lin. Exercise of green Tea which comes from China. Class Polygamia. Ardo Monogynia. Genus Thea. Species Viridis. Calyx - Perianthium quinque partitum, minimum, planum, symentis rotundis, obtusis, et persisten tentilus. Corolla - petala sex, subratunda, concava, duo exteniora minora inequales, quotuor interiora magna, equalia, antequam deciclunt recurvata. Stamina - Filamenta numerosa (circiter 200) filiformia Corolla breviora - Anthere cordatae, biloculares. Germen globosatrigonum. Pistillum - Stylus simplex apice trificlus petales staminibus lapsis recedentis - Stigmata simplicia. Pericarpum - Capsula tribus globis trilocularis, apice trifarium delisceus. Semina solitaria, globosa, introrsum angulata. Receptaculum non est descriptam ed est indistinctum. Observations on the tea plant. The leaves have an emarginated apex, a very entire base, smooth, glossy, bullate and petiolated,foot stallers very short. January 25. Dr. Post recommends in opening the temporal artery to make a longitudinal incision instead of a transverse one as is usually done, Wounds of the veins are seldom dangerous you can distinguish them by the colour of the blood which will be very dark coloured pressure generally commands them. Dr. P. has taken up the external iliac artery for aneurism successively, also the carotid in wounds of the hands when difficulty occurs in stopping the hemorrhage both the radial and ulnar arteries should be tied, the hand will not suffer for it will be supplied by the interosseous artery, the same applies to the fort, the arteries of the hand as also of the foot anastomose very freely. In Venesection the median rein is preferable, for the artery runs under the basilic, and the cephalic is invested in so much loose cellular substance that it might elude the lancet. The Superior and Inferior Mesenteric and Splenic veins unite in the abdomen to form the Vena Portarum yet Mr. Abernethy relates a case where the above veins formed a common trunk which entered the inferior Cava, the liver was supplied by the hepatic artery only. One theory respecting the peculiar circulation is that in the fetus the liver which receives the blood by the ductus venosus weakens the impetus and prevents its lacerating other parts, it is however untenable for the liver is a very friable organ, the ductus venesus becomes obliterated in delivery, the other peculiarities of the fatal circulation are the ductus arteriosus, a duct between the pulmonary artery and the aorta, and the foramen ovale or communication between the two ventricles of the heart, these also become obliterated, but the remains of the foramen ovale are apparent always in the heat of the adult, the use of the foramen ovale is for the circulation between the ventricles, that of the ductus arteriosus, that the blood might be sent through the lungs and body at the same time. Dr. Mitchill's Lecture, Exercise on Saccharum or Sugar cane one of the Gramina. Class Trianchia, Orcler Diggnia. Genus Saccharum. Calyx- none there being merely a down longer than the flower including bent a single flower. Corolla bircglve, the valves oblong. Stamens. three capillary filaments Anthers somewhat oblong. Pistil. Germ all shaped. Stigma simple. Pericap - none at all. Leed. oblong and single. Exercise on the Myristica officinalis or Nutmeg tree. The nutmeg prepared and preserved in spirits with the mace. Class Polyandria. Order Monogynia. Genis Myristica. Essential Character. The berry fleshy, one seeded with a netty membrane, dry, and situated between the bacca and seed. Observation. The seed is the nutmeg, and the membrane the mace of commerce and the shops. Ergot a Spurred Rye. Class Triandria, Order Digynia. Genus Secale. Species Cereaha: Ergotism is a disease not peculiar to rye it sometimes exists in barley and other grains, the grain when diseased is elongated, curved, and blackish, it is considered as a fungus substituted fot the grain as is sometimes the case in indian corn, the ergot contains insects. It exists in three states. 1. per se. 2. containing insects which make their nidus int it. 3. as it is left by the insects full of holes and full of feculent matter. Rye is much cultivated in the district of Salogne in France and when diseased and eaten by the people has produced anoulsions with spontaneous gangrene of the extremities the hands and feet falling off. In this country other effects have been ascribed to it. It has been said that it is the cause of some Epidemics a Spotted fever &c. when eaten, these fevers however have prevailed where the cross of rye had failed. The Army Surgeons during the last war on the lakes ascribed the great mortality to the actions which it is said were made of bad grain. Ergot is remarkable for its specific action on the uterus. Dr. M. thinks it one of the hocus pocus tucks of Midwifery and that it should never be used as we are as yet unacquainted with the insects with which it abounds, they may be poisonsus. It is never recommended in preternatural labour, and in natural ones it is not needed. Dr. Macneven's Lecture. Plumbum or Lead. Acetate of lead is astringent. The Subacetate of lead or Goulard's extract used externally also to distinguish pus from mucus. Lead was used very anciently. The Indians reduce the metal to purity by fusion. Lead is of a bluish white colour nearly tasteless, very soft. Spec. grav. 11 35/100 its tenacity is increased by drawing it into wire, very malleable, it can be rolled into very thin sheets, melts at 612 Fah. when fused it chrystallizes, it is frequently mixed with copper. To obtain pure lead dissolve it in Nit. acid and then chrystallize it. this to be done repeatedly. Lead is converted into an oxide by exposure to air, that is the surface is which prevents the other from being oxydized. Leaden pipes are dangerous for an oxide is fumed. The Perxoxide of lead is brown. The Protoxide is yellow the peroxide contains two atoms of oxygen the protoxide one atom thus the latter contains half the quantity of the former. the composition of the peroxide is 100 lead 13 oxygen. The composition of the protoxide 100 lead. 7 oxygen. When lead is exposed in a vessel a grey pellicle is formed on the top which if taken off fevers again with an increase of weight, owing to the absorption of oxygen. The process which white lead is formed is by exposing lead to the fumes of vinegar The peroxide dissolved in Nitric acid fume the protoxide, red lead in water with chlorine gas passed through it forms the peroxide which is tostelep. The Spec. grav. of red bad 8 14/100. All the oxides run easily into glasses. If gold is mixed with copper or any other metal forming an alloy, you can purify it by lead, take the alloy and four times its weight of lead put them into a cucurbit and apply heat, the lead will unite with the base metals and the gold will be left. Lead generally contains a small quantity of silver and the nerves in Vermont contain it in considerable quantity its separation is called refining, good lead are generally gives 60 or 70 per least pure metal the silver is separated from lead by heat, silver remaining after the lead is volatilized. All the oxides of lead give out their oxygen readily by heat, red lead put into sulphur acid with heat gives out pure oxygen gas, oxides give out their oxygen to any thing that has a greater affinity for oxygen To reduce the oxides 1/8 of charcoal is necessary. Lead unites with Carros Sublim. forming chlorate of lead. Muriate of lead is very fusible and easily volatilized. It is very dangerous to put acids in glaced vessels or they contain lead Submuriate of lead is obtained by heating muriate of lead with an Alkali. Carb. ac. gas unites with lead forming Carbonate of lead or the common white lead, by exposing sheets of lead to the fumes of vinegar. In New York the carbonate of lead is first formed then the carb. ac. gas is passed into it. making a beautiful white. You can test lead by passing through it sulphuretted hydrogen gas which induces it of a dark colour. January 26. Dr. Post's Lecture. Nerves are so modified that they receive peculiar sensations. Some have supposed that the spinal marrow controls voluntary motion, you can destroy the life of different parts by destroying peculiar parts of the spinal marrow. The great solar plexus is in the abdomen and all the nerves of the abdominal viscera derive some of their branches from it forming little plexuses before they enter the viscera. Nerves have medullary matter in them as may be shown by pressing the optic nerve. Dr. P. supposes that the ganglia of nerves generate a certain influence which acts on the involuntary muscles as nerves going to them have always ganglia while those going to the voluntary muscles have seldom any. Sanglia appear to be merely an enlargement of the nerves. Dr. Monro supposed them to perform the office of little brains. Nerves acquire a preternatural irritability, and also become paralysed yet their structure does not appear to undergo any change. Nerves also influence the involuntary muscles as appears by the effects which certain passions of the mind have on the heart. Some suppose as does Dr. P. that many medicines act not by direct application, but on the stomach, and that by sympathetic action, through the medium of the nerves their effects are extended to different parts of the system. Some Physiologists suppose that Electricity is the cause of Nervous action which precedes the body and under certain circumstances is transmitted through different parts of the body as in Gymnotus Electricus a fish which has very large nerves, a small brain and which can at pleasure give out its electricity. Dr Mitchill's Lecture. Class Criptogamia. O. Fungi. G. Agaricus. fungus horizontal, lamellated beneath including the family of agaries which are used as styptics. G. Boletus - fungus horizontal, porous beneath. G. Lycoperdon, puff ball, fungus roundish, filled with impalpable mealy seeds like flower escaping from the top. G. Tuber a subterranean fungus roundish with a solid pulp as the Tuceahoo which is also called Selecotina because a new vegetable principle has been found in it called Selecotine which is insoluble resisting all Chemical agency, it has been supposed by some to be a parasitical plant, that is growing on other plants. Books recommended by Dr. M. Michaux's Flora Boreali Americana 2 Vol. in Latin. Michaux's Historic des Chênes - of oaks 1 Vol. in French Michaux the son on Forest trees 1 Vol. in French. Persh's Flora Americae Septantrionalis 2 Vol in English. This ends Physiological Botany. 3d- Part of Medical Botany. Examples C. Diandria. O. Monagynia. G. Canilla S. Mariana called Dittany an agreeable aromatic given either in infusion or decoction as a remedy in anorexia and dyspepsia. S. Pulegordes, Pennyroyal the same virtues as the former G. Vernena. S. Carolinia Lime scented vervain, aromatic S. Officinalis one of the same family G. Gratiola. S. Virginia hedge hyssop a febrifuge. G. Lycopus. S. Americanus. water horehound febrifuge. C. Triandria. O. Triandria. G. Lechea. S. Major of Wilderrow and Cirtus Canadensis of Linneus. the frostweed. It has been used with great success in New York by Physicians and Quacks in strumous swellings and ulcers, particularly those about the neck, it is to be given freely according to its effects, in infusion or decoction, the foot, stem, leaves and flowers are used, a cataplasm should also be applied to the tumours and sores made of the plant. C. Tetrandria. O. Monogynia. G. Frasera. S. Waltheri. the American Columbo, or pyramid flower, and equals the Asiatic Columbo in appearance and quality and can be used with equal success. G. Cornus. S. Florida common dogwood, the bark tonic, astringent and bitter, used instead of Cinchoria. Officinalis. S. Lenica swamp dogwood is an antidote to poisonous plants. Dr. Macneven's Lecture. Remedies of the Cutaneous system They are considered under three heads. 1. As an absorbing system. 2. As an exhaling sysem. 3. As a sentient system. The skin is [cross out] an exhaling, absorbing, sentient system under the immediate aging of air, heat, light &c. 1. As an absorbing system - The lymphatics open through the epidermis as in proved by mercurial frictions, rubbing the body with turpentine & baths increase the weight of the body The actively of the absorbents removes bruises, purulent matter and accounts for the metastasis of diseases. If the bladder loses its action, or the gall bladder becomes obstructed, the urine and bile are carried into the circulation. The history of contagious diseases proves the activity of the absorbents. The skin according to its state must be stimulated or its irritability lessened. Absorption is stopped by Elephantiasis and leprosy - Mr. Cruitestaute relates a case wherein a person having a knee swelled with synovia took a dose of tart. emet. by mistake instead of cremor tartar which completely dissipated the swelling. John Hunter also relates a case where there was a bubo almost fit to be opened which was cured by vomiting. An ointment of aloes rubbed into the abdomen will cure obstinate costiveness after other remedies have failed, Cinchona, opium and camphor by friction produce their usual effects, digitalis has cured ascites in this manner rhubarb and scammony also produce their usual effects by friction. Radix Tentarium is a certain remedy for psora, it was first discovered in France. Olive oil neutralises the poison of serpents, a man before the Royal Society of France allowed himself to be bitten by a poisonous serpent, the usual symptoms supervened when by applying warm oil to the wounds he was cured. Acetic ether assuages the pain of rheumatic limbs. 2. As are exhaling system - The remedies are Diaphoretics. The stoppage of the perspiration causes many complaints the anatomy of the exhalents is as yet imperfect, perspiration is affected by temperature air &c. it is a secretion from the minute arteries, and it is the perspiration which probably changes the colour of the blood. Heat acts immediately on the exhalents causing perspiration. When the heat of the body is above 108 Fahrenheit cold water and cold affusion will cause immediate perspiration for the body will give out its superabundant caloric to the water, but when the body is of its natural temperature or below it the tepid affusion is applicable, for the cold affusion will reduce the temperature below its ordinary state, when the body is very hot, cold water will cause the heat to condense on the surface of the body forming sweat. Diaphoretics act best in the morning, for during sleep the irritability of the absorbents increases, hence the reason why consumptive persons always morning sweats. January 27th- Dr. Post took up the par vagum of a dog when vomiting and shortly after death came on, this is the principal nerve of the stomach and lungs, if you take up one par vagum the voice is very much weakened owing to the recurrent nerve which arises from the par vagum and which is reflected up behind the aorta, there are no very serious symptoms however after a few months you may take up the ether and yet no serious symptoms supervene even a piece of the nerve has been taken out, which shows that nerves like other parts have the power of regeneration the 8th pair of par vagum when it leaves the brain passing down in the sheath inclosing the carotid artery and jugular gives off branches to the lungs, and has been called the pneumatic nerve by the French in taking up the carotid we must avoid this nerve which his under the artery. this nerve afterwards divides into two branches which supply the stomach. The nerves which go to the tongue are distinct, a branch of the 5th- pair are for taste called the gustatory nerve, the 9th- pair or lingual nerve to supply the muscles moving the tongue. Dr. Mitchills Lecture, C. Monandria. O. Monogynia. G. Amomun Fingiber. ginger aromatic, used as a tonic and carminative in atomic gout, in delirium tremens. S Cardomomum. cardomon, another species of the same genus. G. Maranta. Arundinacea, indian arrow root, the root dried and macerated furnishes the fecula which is nourishing and emollient. G. Curcuma, turmeric, of which there are two species the rotunda and longa, it is a mucilaginous somewhat bitter root sometimes used for dyeing. The East Indians makes great use of it, and are so fond of the colour that is produces, that they always colour their rice with it before they eat it. C. Diandria. O. Monogynia. G. Olea. Eurpoea, olive oil - Chemists says that it consists of carbon and hydrogen - this oil is nutritive, laxative and anthelmintic - speaking of worms Dr. M. said that they are not worms but zoophytes. Dr. M. says that olive oil does not check perspiration as is commonly supposed, but promotes it, he has used it with success in yellow fever by friction, it has also been used in plague, dysentery &c and is preferable to drastic purgatives when hardened faces are collected in the intestines as it lubricates the passage and softens the scybala. Oil united to sal. soda makes soap. Soda was the name formerly for heartburn and the remedy used for that complaint has the name of the complaint itself.