fdM IONAL LIBRARY OF MEDICINE NLM D0m07QM 3 B SURGEON GENERAL'S OFFICE t \ I t LIBRARY. } •i -------------------r Section, .. Jj J jto.II'J&IQ. J -6 {C*Lu£. NLM001407043 K ANEMIA. V FREDERICK P. HENRY, M.D., PROF. OF CLINICAL MEDICINE IN THE PHILADELPHIA POLY- CLINIC; ONE OF THE PHYSICIANS TO THE EPISCOPAL HOS- PITAL; ONE OF THE PHYSICIANS TO THE PHILADELPHIA HOSPITAL ; CONSULTING PHYSICIAN TO THE HOME FOR CONSUMPTIVES ; CORRESPONDING MEMBER OF THE ROYAL MEDICAL ACADEMY OF ROME, ETC., ETC. REPRINTED FROM THE POLYCLINIC PHILADELPHIA: P. BLAKISTON, SON & CO., No. 1012 Walnut Street. 1887. MbZlcL, Copyright, 1887, by. P. BLAKISTON, SON & CO. too DR. S. WEIR MITCHELL, THIS WORK IS, BY PERMISSION, RESPECTFULLY DEDICATED. ' Semper honos, nomenque tuum, laudesque manebunt, Qux me cunque terrx vocant." PREFACE. This, the first systematic treatise on anaemia published in this country, is a reprint of a series of articles published in The Polyclinic dur- ing the past year, and embodies the results of many years' study of the blood and the dis- orders consequent upon its imperfect elabora- tion. The statements which it contains are, for the most part, based upon personal obser- vation, and where this has been wanting, upon accepted facts of physiology and pathology. I have endeavored to supply the want of a trustworthy guide to a wide and growing field of research—a want which I myself have keenly felt. 721 Pine Street, June 1st, 188/. v CONTENTS. PAGE Introduction................ I Methods of Examination,......... io Anaemia in General,............ 15 Exciting Causes of Anaemia,........ 20 Symptoms of Anaemia,........... 27 Anatomical Characters of Aiuvmia,..... 30 Diagnosis of Anaemia,........... 31 Prognosis of Anaemia,........... 34 Treatment of Anaemia in General, ...... 35 Varieties of Anaemia,........... 43 Chlorosis, Anaemia of Puberty,....... 47 Anaemia Lymphatica,........... 59 Leucocythaemia,............. 75 Anaemia Splenica,............102 Pernicious Anemia,............114 Secondary Anaemia,............129 Toxanaemia, . ..............130 Parasitic Aneemia,............132 Index,.................135 vii ANEMIA. INTRODUCTION. The blood holds in solution certain albumin- ous bodies, of which the principal are serum- albumin, serum-globulin, and fibrinogen, and a number of mineral substances, the chief of which are common salt (sodium chloride) and sodium carbonate. These may be classed as the invisible constituents of the blood, and their investigation belongs to the domain of the physiological chemist. In addition, it holds in suspension certain bodies, the red and white corpuscles, which are open to direct inspection, and may, therefore, be classed as the visible constituents of the blood. The study of these latter, as regards their form, color, size, number and relative proportion, is the province of the histologist, and it is with these properties that we are concerned in this treatise. The red corpuscles of man are circular disks, with rounded edges and depressed centres. On account of the difference in thickness between A 1 2 the central and peripheral parts of a red cor- puscle, it is impossible that its entire surface can be accurately focused by the microscope at the same time, and, accordingly, when its centre appears bright its periphery is dark, and vice versa. The diameter of the human red corpuscle is about T|^ of a millimetre, or ^Vtr ot an inch. The chemistry of the red corpuscles is quite complex, and, in some respects, still unsettled. The most important ingredient, haemoglobin, is conspicuous by its brilliant op- tical properties, and its amount may be most readily determined by these alone. It is the only proteid of the body that contains iron, and the amount of this mineral in the ash of the blood affords a method of determining the amount of haemoglobin in a given specimen. It is by means of the haemoglobin in the red corpuscles that the blood conveys oxygen to the tissues. Haemoglobin is characterized by the readiness with which it absorbs and parts with oxygen. It exists in the blood in two dis- tinct forms : in the arterial blood as oxy-haemo- globin, and in the venous blood as reduced haemoglobin. These two forms are readily distinguished by means of the spectroscope. 3 Haemoglobin is crystallizable, the crystals being obtained with greater or less ease from the blood of different animals. They may be obtained most readily from the blood of the rat, by simply mixing it with distilled water on a glass slide. Other means employed with the blood of other animals are : alternate freezing and thawing of the blood, the passage through it of electric shocks, of the vapors of ether and chloroform, and the addition of the alkaline salts of the bile. The largest crystals are deposited from blood that is allowed to undergo decomposition. Thus obtained, they are often of enormous size—from three to five centimetres long. This is explained by the supposition that putrefaction destroys substances which are preventive of crystalliza- tion. If there is any single element of the body that deserves to be called "vital," it is undoubt- edly haemoglobin. It is universally present, and conveys to the tissues the element, oxygen, that is most essential to the life of the individual, while its diminution below the normal, even when slight, is manifested by various symptoms of functional disorder, and when extreme and long continued, leads to grave and irreparable organic lesions. Its chemical properties are 4 extraordinary, and apparently contradictory. It is organic and yet crystallizable; it has an eager affinity for oxygen, and yet parts with it on the slightest demand; it is soluble in water, and circulates in the blood without leaving the red corpuscles; and, finally, without losing its identity, it exists in the blood in two distinct forms : in the arteries as oxy-haemoglobin, in the veins as reduced haemoglobin. The ab- sence of this substance from the blood in greater or less degree, is at the root of the various forms of anaemia, about to be considered. The white, or colorless corpuscles, are spher- ical masses of granular, nucleated protoplasm, having a diameter of io/j-* or 25V5 of an inch. They ppssess the power of spontaneous move- ment, and hence are sometimes called amoeboid cells, from their resemblance, in this respect, to the unicellular rhizopod, called the amceba. They exist in healthy blood in about the pro- portion of one white to five hundred red cor- puscles. Their specific gravity is less than that of the red corpuscles, and, therefore, if blood be placed in a narrow cylindrical vessel * The Greek letter, fi, is used as the sign of the micromilli- metre, or one-thousandth of a millimetre. 5 and kept from coagulating by a temperature a little above the freezing point, or by the addi- tion of a saline, such as sodium sulphate, the red corpuscles will collect at the bottom of the vessel, and the white at the top. Owing to their scanty numbers, great difficulty stands in the way of their accurate chemical analysis. Nevertheless, some work has been accom- plished in this direction. Their contractile power is probably dependent upon a substance closely resembling the myosin of voluntary muscle. Their nuclei may be isolated from the surrounding protoplasm by the action of gastric juice, which dissolves the protoplasm and leaves the nucleus intact. The latter is composed of a mucin-like substance, contain- ing phosphorus, called nuclein. The minute granules scattered throughout the substance of the white corpuscles are, some of them, soluble in ether and alcohol, and therefore regarded as fat granules; the nature of the granules not thus dissolved is unknown. Glycogen is also contained in the white corpuscles, as may be demonstrated by treating them with a solu- tion of one part iodine, and two parts potas- sium iodide, in one hundred parts water. 6 Besides the red and white corpuscles, other morphological elements exist in the blood, con- cerning the character and function of which there exists considerable confusion. They are the haematoblasts of Hay em, identical with the blood-plates (Blutplattchen) of Bizzozero, the microcytes, and the advanced lymph disk or invisible corpuscle of Norris. When blood is examined under the microscope, there may be occasionally observed, and sometimes in large numbers, certain granular-looking masses of irregular shape, the size of which is variable, but may considerably exceed that of the white corpuscles. They are known as Schultze's granule masses. With strong lenses, it is readily seen that they are not granular or amorphous—like the amorphous urates seen in urine—but are composed of distinct and inde- pendent individual elements,* which latter are the haematoblasts or blood-plates. " They are the elementary corpuscles of Zimmermann, the globulins of Donne, the grains sarcodiques of Vulpian, and the granulations libres of Ran- vier. The latter regarded them as particles of fibrin, which serve as centres of coagulation, * This was first demonstrated by Osier. 7 just as a crystal of sodium sulphate dropped into a solution of the same will serve as a centre of crystallization." * These bodies are not, as has been supposed, disintegration products of the white corpuscles, for they may be seen circulating in the blood of transparent tissues, such as the mesentery. Their function is intimately concerned with the production of fibrin. The microcytes are round or disk-shaped bodies, much smaller than the red corpuscles. They vary considerably in size, their average diameter being 3/*. They resemble minute red corpuscles, and sometimes contain considerable coloring matter. They are very numerous in idiopathic, so-called pernicious, anaemia, while, on the other hand, the granule masses are but scantily present in that disease. Microcytes are also to be found in perfectly healthy blood. The colorless corpuscle of Norris is a red cor- puscle minus its coloring matter. Norris claims that it is a young red disk that has been elabo- rated in the lymph glands, and has entered the blood by the thoracic duct, and that it gradu- *The Coagulation of the Blood. F. P. Henry, Archives of Medicine, December, 1884. 8 ally acquires all the properties of a mature red corpuscle. His opponents contend that it is a red corpuscle deprived of its coloring matter by the very manipulations used to demonstrate it. The question is still unsettled. The functional power of the blood is depend- ent upon the number and quality of its red corpuscles. When a deficiency exists in either of these respects, the tissues suffer for the want of oxygen—the most important nutritive ele- ment of the body. When the degree of anaemia is slight, it may be manifested by symptoms which are not to be distinguished from neuras- thenia in its various forms, except by an exami- nation of the blood. The latter affection often co-exists with a perfectly normal condition of the blood. When the anaemia is of higher grade, the want of oxygen—equivalent to want of breath—may not be experienced except upon exertion, of which the amount necessary to pro- duce this symptom is in inverse ratio to the degree of anaemia. In extreme cases, simply raising the head from the recumbent position will suffice to induce breathlessness or even syncope. Even in such extreme cases, the symptoms alone will not suffice for diagnosis, 9 for there are diseases of which the most promi- nent symptoms are due to irregular distribution of the blood, a hyperaemia of one vascular dis- trict necessarily causing a correlative anaemia of another, while the constitution of the blood is normal. The most conspicuous example of this condition is furnished by Addison's disease, in which, owing to vasomotor paralysis, there is great accumulation of blood in the ab- dominal vessels and a correlative anaemia of the brain. Here, also, dyspnoea arises upon slight exertion; the muscles are weak and easily fatigued, and in extreme cases, during the frequent exacerbations of the disease, simply raising the head from the pillow is sufficient to induce syncope. Until very recent times, these symptoms of Addison's disease were ascribed by the most eminent authorities to a high degree of anaemia. It is now established that in such cases the constitution of the blood may be normal, and that the symptoms are due to its irregular distribution. Further instances are unnecessary to prove the diagnostic importance of a proper examination of the blood. The presence of anaemia may be guessed at without such examination, and the diagnosis (?) con- 10 firmed or rejected by the result of the treatment, while the patient, in the meantime, may have been losing what might have been saved by proper methods. Not only the bare presence of anaemia, but its variety and degree, are to be ascertained by examining the blood, as well as its progress under different modes of treatment. In short, no contribution to the clinical history of a case of anaemia deserves to be compared with that derived from an examination of the blood. METHODS OF EXAMINATION. These consist in the enumeration of the red and white corpuscles, and the determination of the percentage of haemoglobin in the former. The instruments used for counting the corpus- cles are all constructed upon the same principle, the different modifications being such as are designed to facilitate the rapid counting of the cells, and the easy reckoning of their percentage as compared with the standard of health. A known quantity of blood is diluted with a known quantity of fluid, and in a cell of certain depth and superficies—the latter indicated by squares of a certain size ruled upon an ocular micro- meter, or on the bottom of the cell containing the 11 blood—the number of corpuscles is counted. With these factors—the depth of the cell, its superficies, and the degree of the dilution—the number of corpuscles in a cubic millimetre of blood, for instance, is readily estimated. It is self evident that the more the blood is diluted, the easier is the counting of the corpuscles, and the longer the subsequent calculation. The chief instruments in use for counting the blood corpuscles are the compte-globules of M. Malassez, for a de- scription of which see Comptes Rendus de L Academie des Sciences, Dec, 1872, also These de Paris, 1873; the hematimetre of MM. Hayem and Nachet, described in the Comptes Rendus de L'Academie des Sciences, 26 Avril, 1875! and the haemacytometer of Dr. Gowers, of London. The different instruments for counting the blood corpuscles may be used in combination. Thus, in many of my own observations, I have used Gowers' pipettes with Hayem and Nachet's cell and eye-piece. Thoma and Zeiss {Her- mann's Handbuch der Physiologie, IV, Bd. I), also, have constructed an apparatus composed of the pipette used with Malassez' instrument, 12 known as the mixer [inelangeur) of Potain, and a cell similar to that of Gawers. The instru- ments of Gowers and Zeiss are superior to the others mentioned, in that they may be used with any microscope without adjustment for the different objectives employed. The counting is, however, sometimes rendered very difficult with Gowers' instrument, on account of the large size of the squares—y^ of a millimetre. The squares in the cell Of Zeiss' instrument are only ^5 of a millimetre, rendering the counting a very easy task. Until quite recent times, it was sup- posed that the quality of the blood could be accurately determined by counting its corpus- cles. If these were found below the standard— 5,000,000 per cubic millimetre—anaemia was supposed to exist; while, on the other hand, if above this standard, anaemia was confidently declared to be absent. It was apparently taken for granted that the red blood corpuscle was a constant quantity, a unit, containing invariably the same amount of haemoglobin. It is now thoroughly established that the amount of. haemoglobin in two red corpuscles, from differ- ent individuals, may vary as much as 50 per cent., so that the mere number of the corpuscles 13 does not afford an infallible proof of the pres- ence or absence of anaemia. When the cor- puscles are decidedly below the normal average, anaemia, of course, can be determined by a mere count, but even here its degree can only be accurately estimated by determining the percentage of haemoglobin, the reduction of which is usually greater than that of the number of the corpuscles. It is, however, in those cases of anaemia in which the number of the corpuscles is normal, or even greater than normal, that the superiority of the haemo- globin test is unmistakably manifested. The writer agrees with Hayem, that, if one had to choose, in cases of this sort, between the two methods, the color test would undoubtedly be preferred.* The principal point to be determined in an examination of the blood is the functional value of the red blood corpuscles, which bears a direct ratio to the amount of haemoglobin in each. * " Si dans les cas de ce genre, cas d'ailleurs extremement com- muns, on voulait s'en tenir a l'une des deux methodes d'examen du sang, c'est done sans hesitation au procede chromometrique qu'il faudrait donner la preference." Recherches sur I'anat. norm, et path, du sang. Paris, 1878. 14 As a rule, when the number of blood corpuscles is normal, the amount of haemoglobin is also normal, or nearly so, but, and this fact deter- mines the value of a color test, there are numer- ous exceptions to this rule. Thus, Baxter and Willcocks found 6,600,000 corpuscles per cubic millimetre, in a case of typhoid fever, but they contained only 45 per cent, of the normal quan- tity of haemoglobin, making their functional value equal to that of 2,970,000 normal corpus- cles ; so that, in spite of the high figures, the degree of anaemia was great. Instruments for estimating the percentage of haemoglobin have been devised by Hayem, Malassez and Gowers, of which the most simple is the globinometer of Dr. Gowers. I have used this apparatus with much satisfaction. It is light, compact, and easily manipulated. The words of its inventor are equally applicable to the instruments of Hayem and Malassez. " The instrument is only expected to yield approxi- mate results, accurate within two or three per cent. It has, however, been found of much utility in clinical observations." From these introductory remarks, the import- ance, for clinical purposes, of a proper exami- 15 nation of the blood is manifest. It is a signifi- cant fact that those who, in the course of their practice, make frequent examinations of the blood, encounter cases of disease never met with by others, with perhaps much greater op- portunities for observation ; but no more so than that the oculist has become able, by improved clinical methods, to classify cases formerly vaguely known as "amaurosis," into retinitis, choroiditis, atrophy of optic nerve, separation of retina, glaucoma, etc. The wonderful progress of ophthalmology in recent times has been due to the skillful handling of a small mirror, and what we know of blood diseases, is due to the microscope in conjunction with an apparatus which is already regarded as one of its import- ant " accessories." We now proceed to the consideration of our proper subject, Anaemia. AN.EMIA IN GENERAL. The term anaemia, signifying an impoverished state of the blood, is to be preferred, both on the grounds of etymology and euphony, to such terms as spanaemia, oligaemia, oligocythaemia, which have been introduced at various times on the plea of greater accuracy. It has, be- sides, the great advantage of possessing its 16 exact equivalent in the French and German languages—" anemie" and " anamie." All the different varieties of anaemia are characterized by a diminution of the number or value of the red blood corpuscles ; that is to say, of the nor- mal amount of haemoglobin. From a clinical point of view, this is the primary and essential morbid condition. It is supposed and argued that this reduction in the amount of haemoglo- bin is preceded by a reduction in the amount of the plasmatic albuminates ; but this question is quite as obscure as that concerning the pre- albuminuric stage of Bright's disease. Anaemia is not a neurosis or a functional disorder, as one might suppose, from the loose manner in which the term is occasionally employed, but a sys- temic condition dependent upon a lesion which can be demonstrated with the utmost precision. There are certain predispositions to anaemia dependent upon sex, age and constitution. The female sex is more prone to anaemia than the male ; and peculiarly so during the pregnant condition, in which, owing to the great demands upon the blood for the nourishment of the foetus, anaemia is the rule. On the other hand, the female sex is more tolerant of anaemia than the 17 male, which is partly due to the fact that the life of females is, as a rule, more sedentary. Many women go through a long life without any par- ticular ailment, but are known to possess what is termed a delicate constitution. Being for- tunately free from any constitutional vice, no organic disorder develops; nevertheless they are chronic invalids. They are usually treated with excessive consideration by friends and rela- tives of their own sex, and regarded by the average practitioner as lucrative humbugs. The fact is, that such women are suffering—if such a term may be applied to a condition which brings with it so great freedom from responsibility—from a light grade of chronic anaemia. It is astonishing upon what a small amount of food such persons support a long existence ; but it is to be observed that if the income is small the output is still smaller. Many such persons play the role of amiable drones in the hive of busy workers. They do not repine at their lot, preferring to bear those ills they have rather than fly to others (the responsibilities of health) that they know not of. The predisposing influence of age is most marked during youth and advanced life. The B is demands of growth during adolescence render the equilibrium of the blood peculiarly unstable. This, also, is more marked in females, in whom the evolution of the sexual system is, as a rule, attended with more systemic perturbation. Anaemia should, undoubtedly, be classed among the tissue changes known to the histolo- gist as "senile;" indeed, there is excellent ground for believing that it is at the root of those which are most suddenly disastrous, to wit, the degenerations of the walls of small blood vessels. During the inevitable period known as the " decline of life," the system is especially intolerant of nutritive losses. The recuperative power of the blood is impaired. It is just at this period, also, that the diseases attended with such losses are most prevalent; among which are to be reckoned chronic catarrhs of mucous surfaces, such as the pul- monary and vesical; hemorrhoids, ulcers, etc. Anaemia may be congenital. In 1883, while examining the blood of several new-born chil- dren at the Maternity Hospital, I encountered the following case :— " Case .3.—Mary C------, born 5.20 a.m., November 5th. Count made 2.30 p.m., Novem- 19 ber 6th. Child weighed six and three-fourths pounds at birth ; labor natural. Number of red corpuscles per cubic millimetre, 3,625,000; pro- portion of white cells to red, 1 to 145. This case was undoubtedly one of congenital anaemia. The child's only appearance of malnutrition was a shriveled state of the integuments of the feet, and a less rosy color of the skin than normal. Foranew-born child, it was decidedly pale. This shriveled state of the skin emphatically nega- tives the idea of a relative anaemia from excess of fluid. The blood was probably deficient in quantity (oligaemia) as well as defective in quality (oligocythaemia). There was also a decided increase in the number of the white cells. Careful inquiry proved that there had been no hemorrhage from the cord. As pos- sibly bearing upon the congenital imperfection of this child, I may mention the fact that the parents were themselves immature—the father being seventeen, and the mother eighteen years old."* It is possible, also, that the case may have been one of congenital syphilis. * See paper entitled "A Contribution to the Study of Icterus Neonatorum," by Frederick P. Henry, m.d. Archives of Medicine, October, 1883. 20 The third cause, above mentioned, as predis- posing to anaemia, is constitution. No better proof of the existence of such a tendency can be brought forward than the report of the above case of congenital anaemia. An extended series of examinations would probably show that such congenital deficiencies in the composition of the blood are by no means uncommon. Cer- tainly, the widest differences of external appear- ance are presented by the new-born, from the pale, puny sickling of five or six pounds, to the rosy, vigorous child weighing from ten to twelve. With proper care, the puny child may thrive and grow, perhaps, too rapidly, and pre- sent every appearance of health, but in after life, under circumstances to which its more vigorous contemporary would rise superior, the innate tendency to anaemia will manifest itself. Precisely similar facts are observed with refer- ence to the other tissues of the body. One in- dividual will not only retain his weight, but grow fat upon a diet which another would regard as but little removed from starvation. EXCITING CAUSES OF ANAEMIA. It is hard to draw a sharp line between the predisposing and exciting causes of anaemia. 21 To the writer it seems proper to include among the latter such causes as are equally operative in either sex and at all periods of life; but in such a division no allowance is made for the wide differences in individual power of resist- ance. A cause will excite anaemia in an individual with an innate tendency to the disease ; while in another, devoid of such tendency, it will not do so, unless long continued or frequently re- peated. In the former the cause deserves to be called exciting ; in the latter its action is more closely allied to that of the causes called predis- posing. Bearing this in mind, the exciting causes of anaemia include hemorrhage and other pathological discharges, sexual excess, in- sufficiency of food, light or air (bad hygiene), the depressing emotions of grief and anxiety, fever, and, finally, whatever interferes with the digestion, absorption and assimilation of food. It is not pretended that this list is complete, for, as Immermann remarks, " Nearly every mor- bid process, when it occurs in a severe form, is sooner or later followed by anaemia." It would be tedious to enter at length into even the chief exciting causes of anaemia ; but two, which are 22 the most frequently encountered in medical practice, deserve more than a passing notice. These are hemorrhage and fever. Experiments of Vierordt upon the lower animals—dog, rabbit, guinea pig—show that death ensues promptly, when, after bleeding, the red corpuscles are re- duced about fifty per cent. Later observations show that these figures are not applicable to human beings, whose powers of resisting hem- orrhage are very much greater. For example, Behier (quoted by Laache) reported the case of a woman whose blood, after a metrorrhagia, contained but 19 per cent, of the normal num- ber of red corpuscles ; having, theretofore, suf- fered a reduction of 81 per cent. The woman recovered after transfusion. Laache examined the blood of five previously healthy women who had suffered from profuse hemorrhage, and found the red corpuscles reduced respectively 37, 61, 62, 64 and 68 per cent. In three of the cases there was complete restitutio ad integrum, without transfusion ; in one, death occurred from an intercurrent disease, septicaemia; and in the remaining case, improvement was progressing at the time of the report. It must be borne in mind, however, that the result of a blood ex- 23 amination after hemorrhage, depends upon the time at which such examination is made. It is self-evident that, if from a quantity of blood outside the body three-fourths be removed, and a sample of the remaining fourth be examined, its centesimal composition will be the same as that of a sample taken from the whole mass. So, also, if the blood in the living vessels be ex- amined immediately after a profuse hemorrhage, its composition will closely resemble that of the entire volume of blood before the hemorrhage. It will not be identical with it, however, for dur- ing the progress of a hemorrhage, the lymph, the tissue juices, and any ingested fluids, are rapidly taken up by the blood vessels to re- store the blood volume ; so that, as Immermann remarks, the immediate effect of a profuse hemorrhage is a " complex dyscrasia, made up of hypalbuminosis, leucocytosis and oligocy- thaemia." It is no doubt true, in the majority of cases, that even during the progress of a hemorrhage, owing to the diminished vascular tension, the " osmotic current of tissue juices " is strongly directed toward the blood vessels; but I believe there are cases in which, on ac- count of the shock to the system produced by 21 the sudden escape of a large amount of blood, this current is extremely feeble, or even, for a time, held in abeyance, and in which, therefore, an examination of the blood, immediately after hemorrhage, will show little or no. difference in its cellular composition. The following is a case in point:— On June 6th, 1885,1 examined the blood of a woman, Mary L., aet. thirty-two, who, during the preceding four weeks, had suffered from con- stant metrorrhagia, which, on two occasions, had been quite profuse. I only succeeded at last in stopping the hemorrhagia by the intra- uterine application of Monsell's solution. On June 5th there was still some slight oozing, which had entirely ceased by the 6th, the day on which the examination was made. Number of red corpuscles, per cubic millimetre, 4,600,- 000. Proportion of white cells to red, 1 to 460. " As far as the number of red corpuscles per cubic millimetre is concerned (I quote from my note book), and the proportion of white to red, the blood may be considered absolutely normal, but the woman is greatly prostrated, with blanched skin and mucous membranes. The 25 volume of her blood is evidently greatly dimin- ished." As studies of the centesimal cellular compo- sition of the blood after hemorrhage, Laache's cases are defective, as he himself admits, on account of the time between the hemorrhage and the first examinations. These were made, respectively, in Case I, on the 20th day after the hemorrhage; in Case II, on the 21st; in Case III, on the 6th; and in Cases IV and V, on the 5th. The anaemia of fever offers certain peculi- arities, to which I have called attention in an article in The Polyclinic for September 15th, 1885, entitled "The Latent Anaemia of Typhoid Fever." These are, in part, dependent upon the loss of water sustained by the system in all febrile affections, and particularly in typhoid, owing to its long duration and intestinal com- plications. In typhoid fever, which may be taken as a type, notwithstanding the evidences of an impoverished state of the blood, afforded by the profound adynamia and the muscular tremors, an examination during the height of the disease will show, at least, a normal number of red corpuscles. The blood taken from the 20 finger is of a dark venous hue, does not flow readily on puncture, and is evidently inspis- sated. The condition is precisely the reverse of that which obtains after hemorrhage, which is a point of some interest, since it has been held, by at least one eminent authority, that a moderate hemorrhage during the course of typhoid fever is not to be dreaded as a compli- cation. This clinical fact, if it be one, may be explained by the tendency of the blood, after hemorrhage, to regain its former volume by the imbibition of water. The therapeutical deduc- tion is to supply fever patients abundantly with water, as was so strongly advocated by the late Dr. J. Forsyth Meigs. Although the number of red corpuscles in a cubic millimetre of blood may be normal in typhoid fever, their value is decidedly below par. They are deficient in haemoglobin, so much so, that six million corpuscles may have only the functional power of three million. In one form of fever, the malarial, recent in- vestigations tend to show that a micro-organism may be directly active in destroying the red corpuscles. These organisms, if such they be, were beautifully demonstrated by Dr. Council- 27 man, of Baltimore, at the recent meeting of the American Association of Physicians. They oc- cupy the interior of the red corpuscles, and are apparently capable of distinct amoeboid move- ments. That some agency destructive of the red corpuscles is operative in certain cases of malarial fever is proved by the occurrence of haemoglobinuria as a symptom, which latter is but itself the sequence of a preceding haemoglo- binaemia. The blood corpuscles are destroyed while circulating in the vessels. SYMPTOMS OF AN/EMIA. It is customary for medical writers to describe the immediate effects of the sudden escape of blood from the vessels as typical of what they call acute anaemia; but this, in my opinion, is a mistake. As I have elsewhere said: " The symptoms of acute loss of blood, and its fre- quently fatal termination when not more than one-half the normal amount has been lost, are due to sudden ischaemia of the nerve centres." Anaemia undoubtedly exists, but is not the cause of the immediate symptoms of hemorrhage. These are due to a disorder of the circulation, which may be precisely imitated by the appli- 28 cation of Junod's boot to one of the lower ex- tremities. The remote effects of a hemorrhage, that is to say, the condition of the patient when the nervous system has recovered from its shock and the circulation has regained its equilibrium, may be taken as typical of acute anaemia. The chief of these are pallor of skin and mucous membranes, muscular weakness, vertigo or syn- cope, on exertion, or even on assuming the up- right position, and a small, soft, frequent and excitable pulse. In addition, there is thirst, anorexia, or an appetite that is irregular and fanciful. The digestion is feeble and readily disordered. There is a prevailing sense of cold, and yet on slight exertion the skin becomes flushed and perspiration breaks out. The tem- per is apt to be peevish and irritable, and the normal control of the emotions is impaired. While the temperature, upon the whole, is low- ered, irregular pyrexia, to which the term " an- aemic fever" has been applied, is commonly observed in the severest forms of anaemia. The cause of this fever has given rise to much dis- cussion, and the explanation offered by Immer- mann seems to be the most plausible. It is 29 that, owing to the extreme reduction of the nu- tritive properties of the blood, the tissues suffer to such an extent as actually to undergo a spon- taneous decay or necrobiosis, which is attended with the evolution of heat, as is always the case "when chemical compounds of a more stable kind are generated from such as are less stable." Haemic, systolic, cardiac murmurs, and a musical murmur (bruit de diable) in the jugular veins, are among the physical signs. In high degrees of anaemia there is great emaciation, which is generally masked by oedema. Hem- orrhages from mucous surfaces, particularly in the form of epistaxis, and into the retina, are of common occurrence. A fatal termination is generally ushered in by a mild form of delirium, which may be for days preceded by a condition of lethargy, from which the patient is readily roused to full consciousness, but relapses into the lethargic state as soon as the effort to attract his attention is abandoned. The last remarks are only applicable to certain fatal forms of anaemia into which there is reason to believe an anaemia simplex may sometimes be converted. If an anaemia of high degree, whether it origi- nate in hemorrhage, fever, or what not, becomes 30 chronic, all the organs of the body, and among them, of course, those concerned in blood mak- ing, will suffer from malnutrition, so that a con- dition which was at first what is termed func- tional, may eventually become organic ; that is to say, dependent upon lesions to which it has itself given rise. anatomical characters. The anatomical characters dependent upon a marked and long-continued deficiency of red corpuscles, are dryness and translucency of the tissues and fatty degeneration of the heart, in- tima of the arteries, renal and gastric epithelia, and the hepatic cells. In the heart, the papillary muscles are chiefly affected, especially those of the left ventricle, and the morbid change may be detected by the naked eye in the form of minute, yellowish streaks, which have been called "tabby mottling," or "tabby-cat stria- tion." The retinal hemorrhages are dependent upon degeneration of the vessel walls and, in one form of anaemia, upon this, in connection with a plugging of the vessel affected, with white blood corpuscles. The blood is seen to be less than normal in quantity and of a lighter color 31 than natural. In well-marked cases, it is of a light pink color, resembling water in which beef has been washed, and the hue which it imparts to linen is sometimes a pale yellowish pink, which would hardly be recognized as a blood stain. Notwithstanding the deficiency of red corpuscles, and the consequent pale tint of the blood, the muscles, even in the highest degrees of anaemia, are often found of a deep red color, and the adipose tissue of a rich yellow. diagnosis. The lighter grades of anaemia merge imper- ceptibly into health. In city residents, even of the well-to-do classes, whose occupation is at- tended with considerable mental work and its inevitable anxiety, anaemia is the rule rather than the exception. A number of corpuscles, not below 5,000,000 per cubic millimetre, of which the richness in haemoglobin, as determined by Gowers' haemoglobinometer, does not fall below 90 per cent., may be considered normal. This being understood, the lightest grade of anaemia would be expressed by the following formula:— N. (number of red corpuscles per cubic m.) = 100 H. (percentage of haemoglobin) . . . =.80 V. (value of each corpuscle) . . . . =x% 32 An individual whose blood condition would be expressed by these figures, might show little or no departure from health, and be aware of none. I have several times found such figures in young men whose blood I have examined for the purpose of comparing one counting in- strument with another. In the above example, N. is normal, say 5,000,000, but these 5,000,000 corpuscles possess only four-fifths the normal percentage of haemoglobin, and are, therefore, functionally equal to 4,000,000 normal corpus- cles. Anaemia, as a rule, is not clinically appreciable until the haemoglobin represents between three and four million corpuscles per cubic m. The actual number of red corpucles may be five, or even six, million per cubic m., but their real value is sixty, or even fifty, per cent, of the normal. This degree of anaemia is attended by both signs and symptoms, such as pallor, a ten- dency to vertigo, flushing of the face, perhaps tinnitus aurium, muscular fatigue on slight exertion, backache, irregular appetite, and a capricious, captious temper. Such a condition might be merely functional, or secondary to the early stage of some organic affection, such as 33 Bright's disease, diabetes mellitus, carcinoma, phthisis, etc. The next grade of anaemia is that in which the real value of the corpuscles is between two and three millions. In this degree, the percent- age of haemoglobin may be much greater than in the preceding, owing to the fact that now the corpuscles are decidedly reduced in number. It is a familiar fact to all students of blood diseases that, as the number of corpuscles di- minishes, the percentage of haemoglobin in- creases, until in the severest forms of anaemia —those termed pernicious—it may equal or ex- ceed, even double, the percentage of red cor- puscles. A reduction of both number and value of red corpuscles is much graver than a mere diminution of value. A number as low as 3,000,000 generally indicates a serious state of affairs, and may depend upon a more advanced stage of one of the diseases above mentioned, or upon one or other of the diseases of the blood-making organs, to be considered later. The highest grades of anaemia are those in which the real value of the corpuscles varies between 500,000 and 2,000,000 per cubic m. Such figures are generally the expression of c 34 diseases of the blood-making organs—spleen, lymph glands, bone marrow—or of that form of "anczmatosis" to which the term pernicious has been justly applied. An apparent paradox is met with in these intense forms of anaemia, namely, that 500,000 corpuscles may contain as much haemoglobin as is usually found in one million. When this is the case, it is due to the fact that the average diameter of the corpuscles is decidedly above the normal. This increase in size may possibly be a conservative provision on the part of nature, but the fact remains that increased size and altered shape (poikilocytosis) of the red corpuscles must be regarded as of very grave significance. An average diminu- tion in the size of the corpuscles is generally combined with an increase in their number, a set of conditions commonly observed in that form of anaemia called chlorosis. prognosis. The prognosis of anaemia in general has been sufficiently hinted at in the preceding remarks ; but it may be well to emphasize the fact that an anaemia per se is never grave until distinct anatomical alterations in the red corpuscles— 35 alterations of size and shape—are manifested. The prognosis of secondary anaemias is involved with that of the primary disease. treatment of anemia in general. On account of the general prevalence of Anaemia, its preventive treatment is of the utmost importance. The great majority of in- dividuals who are " run down " in health, or suffering from "nervous exhaustion," which they attribute to overwork, are simply, as before said, more or less anaemic. Overwork is the unfortunate scapegoat whose erratic conduct renders him an easy prey to both physician and patient. Work may be rather regarded as a raw, nutritive material, which is usually pre- pared and served in an underdone condition. There may be exceptional cases in which anaemia is justly attributed to overwork alone, but the writer has never seen one. There is a careless way of regarding this matter which leads to inaccurate statements. For instance, if the hours of work encroach upon those of sleep, it is the want of sleep, as much as the excess of work, that is to blame for the result- ing anaemia. If the irrational worker neither 36 takes the time to eat or digest his meals, his anaemia is due to inanition or indigestion. If he finds, or imagines, that the steady use of tobacco, coffee and alcohol is helpful in the kind of work he is performing, it is just possible that his habits are alone to blame for his im- paired physical state. As this is not a treatise on hygiene, I shall not stop to indicate the amounts of food, air, exercise and sleep essential to preserve the health of the average man, woman or child; but I cannot refrain from pausing to condemn a prevalent error. There appears to be a wide- spread delusion in the minds of young men that muscular strength and bodily health are synony- mous terms. This is true, indeed, but only to the extent that a certain amount of muscular strength coincides with the healthy condition. There is a limit in each individual—a Rubicon —the very attempt to cross which is attended with danger. The story of the man who began by lifting the calf, and continuing to do so each day, ended by lifting the cow, is one of those plausible lies which only serve to enhance the beauty of truth by showing how a germ of the latter may give an air of vraisemblance to a 37 tissue of falsehood. It is a pitiful sight, relieved only by its absurdity, that of a young, slender stripling exhausting himself in vain efforts to become an "athlete." Out-door sports are excellent for the growing boy, but heavy gym- nastics should be reserved, as a rule, for those who have attained their full growth. The boy will defeat his object of becoming a strong man by practicing them too early. Let him possess his soul in patience. As the fisherman says, in La Fontaine's fable :— " Petit poisson deviendra grand, Pourvu que Dieu lui prete vie." The curative treatment of a case of anaemia is, in part, determined by its causes, and includes the control of hemorrhage and other patho- logical discharges; the removal from an unfav- orable hygienic environment; the administration of a proper amount of nutritious food, and the suppression of causes which interfere with its digestion and assimilation. In many inveterate cases, in which cure is still possible, this result cannot be attained without weeks, perhaps months, of persevering treatment. A complete control of the patient is essential, and to this 38 end, the seclusion insisted upon by Dr. Weir Mitchell is of great importance, for by it an important obstacle to recovery is at once re- moved, to wit, the demoralizing sympathy of injudicious friends. Excellent results have been accomplished by the means so judiciously em- ployed by Dr. Mitchell, namely, rest, seclusion and passive exercise in combination with the diet and medication adapted to the peculiar exigencies of the case. This method of cure has been elaborately explained by Dr. Mitchell in his well-known work, entitled, " Fat and Blood," and is doubtless familiar to the medical men of this country. I have seen a number of cases of chronic anaemia whose treatment by this method has been attended with the happiest results. I have also seen it fail, as is to be ex- pected where everything fails, namely, in the secondary anaemia of malignant disease, and also in certain advanced cases of pernicious anaemia, in which there were marked alterations in the size and shape of the red corpuscles, as well as extreme diminution of their number. The advantages to be derived from a thorough employment of the so-called rest cure are with- in the reach of few, and in the majority of cases 39 our main reliance is on drugs. The chief of these are iron, arsenic, the mineral acids and cod-liver oil. Hayem also reports the success- ful employment of ferrocyanide of potassium in cases of decided anaemia. The preparations of iron are so numerous that, supposing them to be of equal value, one might well be at a loss to select from among them. This, however, is by no means the case, and I will, therefore, in- dicate those which I consider the best. In pill form nothing has given me more satisfaction than the formula of Blaud :— R. Ferri sulphatis, Potassii carbonatis, aa gr. iss. M. Sic—One, or more, after each meal. To obtain the best effects of a ferruginous preparation, it is often necessary to give it in large doses, and the above is no exception to this rule. It may be pushed, if well borne, to the extent of three pills thrice daily. The lac- tate, the pyrophosphate, the malate and Que- venne's powder, are all excellent preparations of iron. Strychnia, quinia and arsenic may be advantageously combined with the iron. The latter preparation is best given in the form of 40 Fowler's solution. In addition to its specific action upon the skin, arsenic has for a long time been recognized as possessing a general beneficial action in certain states of impaired nutrition, which had caused it to be classed among the agents known as " eutrophic." There is no doubt that much, if not the whole, of this favorable effect is due to the increased amount of haemoglobin in the blood, which results from its administration. Arsenic is spe- cially indicated in anaemias of malarial origin, although its use is by no means limited to these forms. The treatment of secondary anaemias is largely influenced by the nature of the primary affection. As a general rule, arsenic will be found of service in those forms of secondary anaemia in which there is a state of congestion or catarrh of the gastro-intestinal mucous mem- brane. Osier reports good results from its use in the anaemia of heart disease, the " cachexie cardiaque" of French writers. In the causa- tion of this form of anaemia, the obstacle to ab- sorption presented by the engorgement of the gastro-intestinal veins is an important factor. In cases with a syphilitic history, the mercuric 41 chloride may be usefully administered with iron, as in the following formula:— R. Hydrarg. chlorid. corrosiv., gr.j Tinct. ferri. chlorid., 3 ij Glycerin., g ss Aquse, q.s. ad. giij. M. SiG.—One drachm after each meal. The dose may be gradually increased to two drachms thrice daily. The ferrocyanide of potassium recommended by Hayem is worthy of trial, on account of its endorsement by so distinguished an authority on the physiology and pathology of the blood. He begins by giving one gramme (about gr. xv) daily, in two powders, and gradually increases the dose until six grammes, in six powders, are given. Transfusion is a measure which has been so often adopted as a dernier ressort that it has fallen into discredit. If any benefit is to be derived from transfusion, it is certainly not when the patient is moribund. After the sud- den escape of a large amount of blood, the natural process of restoration may be best imi- tated by the injection into a vein of a normal 42 saline solution (0.6 per cent. NaCl.), the amount of which must be determined by the effects upon the patient; or the following for- mula of Hayem for intra-venous injection in cholera, may be employed :— R. Distilled water, 1 litre Sodium chloride, pure, 5 grammes Sodium sulphate, pure, 10 grammes. M. Sig.—Filter and inject slowly at a temperature of 380 C. (100.40 F.) When the object of transfusion is not so much to overcome the effects of sudden ischae- mia of the nerve centres as to introduce a gradual improvement in the patient's nutrition, defibrin- ated blood should be employed. It has been pointed out that when the respira- tion is greatly embarrassed, the injection into the vessels of an additional amount of reduced haemoglobin, such as exists in venous blood, may only make matters worse by adding to this embarrassment, and so accelerate a fatal end- ing. In such cases the blood to be transfused should be taken from an artery. Quite recent- ly the injection of defibrinated blood into the peritoneal cavity and into the subcutaneous 43 connective tissue has been practiced with ap- parent benefit. The dangers attendant upon the transfusion of heterogeneous blood are well known. It should never be used. Milk has been transfused successfully in a few rare in- stances, but for this purpose is greatly inferior to defibrinated blood. It is apt to occlude the vessels, many of its globules being much larger than the largest white corpuscles. If used, it should be boiled, in order to destroy the bacteria which are almost sure to be present. varieties of anemia. Anaemias are properly classified with refer- ence to their origin. The nutritive fund of the blood is continually drawn upon in the processes of nutrition, and if the demands are inordinate, as in fever and hemorrhage, the resulting anae- mia may be justly ascribed to undue waste. Under this head a large number of anaemic conditions might be grouped. A large propor- tion of the remainder might, with equal pro- priety, be attributed to inadequate supply of nutritive materials, due either to absolute want of proper food, or to its imperfect digestion and absorption. There would still remain a number of cases in which both of these causative factors 44 are so intimately combined that it is impossible to decide which of them deserves the greater etiological importance. A division based upon such physiological data as above pointed out, although desirable, is, with our present knowl- edge, altogether inadequate. Like so many classifications in other departments of medicine, it is not ample enough to cover our ignorance of the subject. In a previous contribution* to the literature of anaemia, I advocated a division of its different forms into essential and symp- tomatic, and gave the following explanation of my reasons for so doing:— "By essential anaemia, I mean those forms of the affection that are associated with disease of the cytogenic organs, or with congenital mal- formations of the vascular system, namely, the lymphatic, splenic and medullary anaemiae, and chlorosis; and by symptomatic anaemia, those forms of the disease associated with affections of non-cytogenic organs which interfere with nutrition, such as febrile anaemia, the anaemia of phthisis, cancer, Bright's disease, the anaemia of heart disease—cachexie cardiaque of Andral —the anaemia of lead poisoning and of inani- * Cartwright, Essay, 1881. 45 tion. Malarial and syphilitic anaemia occupy the border line between the two classes. When recent and dependent upon an acute attack, they may come under the head of febrile anae- mia, but when chronic, they are frequently essential, the one generally of the splenic, the other of the lymphatic, variety. These afford interesting examples of the conversion of a symptomatic into an essential anaemia, and it is held by the writer to be highly probable that they are not the only instances of such conversion." The time that has passed since the above paragraph was written has only served to strengthen the opinions it contains, more espe- cially that concerning the conversion of one form of anaemia into another. At present, however, I prefer the terms "primary" and "secondary" to "essential" and "symptom- atic," because they are more widely employed and more in accord with our general medical nomenclature. In addition, I am in favor of a third division, to include those forms of anaemia due to the destructive effect of toxic substances upon the blood corpuscles, and would suggest for them the term toxancemia. 46 Anaemias of parasitic origin are so important in certain countries (and perhaps more so in our own than we suspect) as to merit separate classification. The following classification is offered, in the belief that it is one under which all the different varieties of anaemia may be appropriately grouped:— i. primary anaemias. Chlorosis. Lymphatic anaemia (Hodgkin's disease). Splenic " Leucocythsemia. Pernicious anaemia. II. secondary anaemias. Anaemia of fever. " hemorrhage. " phthisis. " heart disease. " cancer. " syphilis, etc. hi. toxan^mias. Anaemia of lead poisoning (saturnine anaemia). " arsenic " " arseniuretted hydrogen poisoning. " phosphorus poisoning. " nitric oxide " 47 IV. PARASITIC anemias. Anaemia caused by Anchylostomum duodenale. " " Bilharzia haematobia. " " Filaria sanguinis. " " Plasmodium malarias. CHLOROSIS. ANAEMIA OF PUBERTY. With the advent of puberty comes the most sudden and imperative demand upon the blood that is encountered during the normal life his- tory of the individual, and this is superadded to the continued demands of growth, which is most active at this period. It is, therefore, not surprising that an anaemic condition is common at this time of life; the wonder is that it is not the rule. The developmental impulse of pu- berty will rouse from their dormant existence any congenital imperfections of the blood such as were described in an early part of this work. A great deal of confusion surrounds the sub- ject of chlorosis, which is partly due to the fact that statements made by well-known authorities in times when the blood was but rarely exam- ined, have been repeated ever since by writers upon the subject. The researches of Johann 48 Duncan, in 1867 * demonstrated that in chlo- rosis the red corpuscles may be normal in num- ber, while their value—the quantity of haemo- globin they carry — is greatly reduced. In Duncan's cases—three in number—the percent- age of haemoglobin was 0.3. 0.31 and 0.37, the normal standard being 1. While there can be no question of the originality and value of Duncan's demonstration that the coloring mat- ter of the red corpuscles may be reduced with- out a corresponding diminution of their number, I am convinced that such a condition is not pe- culiar to chlorosis or any other form of anaemia. In fact, in one of the cases upon which his cele- brated observations were made there is room for doubt as regards the diagnosis, owing to the fact that the patient had a splenic tumor. By chemical analysis of the blood, in cases of chlorosis, a condition has been detected which is thought by some to be pathognomonic. Becquerel and Rodier, and Quinquaud have found a normal proportion of albuminates in the plasma of chlorotic blood, while in the blood of anaemia in general, they are said to be di- * Sitzungsbericht der K. Acad, der Wissensch. in Wien. B. lv, 1867. 49 minished. Indeed, the first two observers have found a condition of hyperalbuminosis. Im- mermann, in his excellent article in Ziemssen's Cyclopaedia, adopts this as the distinguishing trait of chlorosis, which he regards as an affec- tion suigeneris, and deprecates any attempt to " merge it in the great ocean of anaemia." He holds that the blood in this affection is deficient in haemoglobin alone without any corresponding diminution in the albuminates of the plasma. Quincke, in view of the discrepancies between his own examinations of the blood in cases of chlorosis and those of Duncan, concluded that there must be at least two kinds of chlorosis— the one with a normal number of corpuscles deficient in haemoglobin ; the other with a di- minished number of corpuscles, which may be either normal or deficient with regard to their haemoglobin.* Laache has examined the blood of cases presenting the typical picture of chlo- rosis, and found it normal in every respect. He * " Es muss daher verschiedene Chlorose geben, die eine mit normaler Zahl aber verringertem Hb-gehalt, die andere mit verminderung der Zahl derselben wobei der Hb-gehalt des einzelnen normal oder ebenfalls vermindert sein kann."—Vir- chow's Arch., 1872, B. liv., p.537. D 50 proposes for these anomalous cases the term, pseudochlorosis. He contends that they are cases of chlorosis, because their symptoms are identical with that affection, and quotes with approval the following sentence from the thesis of Moriez : " L'hematologiste diagnostiquera I'anemie et ne pourra pas diagnostiquer la chlorose; ceci est affaire au clinicien." I may say, in passing, that I entirely dissent from this view of the subject. Virchow has endeavored to place chlorosis upon a distinct anatomical basis by demonstrating, in fatal cases, an im- perfect development of the heart and blood vessels. He has found the aorta of a full-grown woman so small as barely to admit the little finger, and its coats, while preserving their elas- ticity, were much thinner than normal. In addition, degenerative changes in the intima were often met with. With this diminished calibre of the arterial system, the heart may be either normal in size, subnormal, or hypertro- phied. When it is recalled that the blood vessels and the red corpuscles are derived from the same embryonic layer—the mesoblast—the bearing upon the pathology of chlorosis of a congenital hypoplasia of this portion of the 51 skeleton becomes manifest. Virchow's doctrine has not, however, met with general acceptance. One of the most important functions of the ar- terial system is its power of adaptation to varying volumes of blood, and in chlorosis, to employ the words of Coupland, "no proof has been given that the diminution in size of the vessels has not followed upon diminution in the total quantity of blood." With reference to this subject, Fagge remarks: "I believe that such affections are not congenital, but due to endo- carditis occurring in childhood. Thus it seems to me that the hypoplasia of the aorta, instead of being itself a primary defect, is but a second- ary result of the valvular lesion. I am not, therefore, disposed to attach much value to Vir- chow's observations as they stand at present." From the above remarks, an idea may be obtained of the obscurity surrounding the sub- ject of chlorosis from an anatomical and chemi- cal standpoint. The same is true with regard to its clinical history. The most various con- ditions of different organs and systems have been described as more or less symptomatic of this affection. The heart has been found abnormally small in some cases, abnormally 52 large in others. The genital system is some- times imperfectly developed; at others, its devel- opment exceeds the normal limits. Sometimes amenorrhoea exists, and may either precede or follow the anaemic symptoms. On the other hand, a chlorotic menorrhagia has been spoken of. The number of red corpuscles has been found normal in some cases, increased or dimin- ished in others. Immermann's view that the blood of chlorosis is peculiar in that it is only deficient in haemoglobin, the plasmatic albu- minates being undiminished, is not generally accepted, for "it has not been proved, except in a few cases of pernicious anaemia, that the serum albuminates are diminished in other forms of idiopathic anaemia besides chlorosis."* With regard to Laache's cases of pseudochlo- rosis, there can be no doubt that the symptoms were due to irregular distribution of the blood, especially to the supra-diaphragmatic portion of the trunk. A blood of good quality, if not properly distributed, may give rise to some of the gravest symptoms of anaemia, such as pallor, syncope, cardiac palpitation, feeble pulse, etc. * Coupland. Gulstonian Lectures on Anaemia. Lancet, April 16th, 1881. 53 This is well seen in certain cases of Addison's disease. The confusion in which the subject of chlo- rosis is involved is due to the persistence in regarding it as a disease sui generis, distinct from all other forms of anaemia. The truth of the matter appears to me to be simply this : At the time of puberty there is an urgent physio- logical demand upon the blood, which is com- plied with by vigorous individuals without detri- ment to the organism. The ordeal of puberty is safely passed. In less vigorous, but still sound, healthy organisms, a decided degree of anaemia, one calling for treatment, declares itself at this time. Finally, in those with any congenital tendency to anaemia, whether this may have been due to general malnutrition during intra-uterine life, or to a special hypo- plasia of the vascular system (the mesoblast), the anaemia of puberty is intense. The case is a typical one of chlorosis. The term chlorosis is too convenient to be readily abandoned, for under it has been, and will be, included many sins of diagnosis. This is a questionable advantage, and the term should only be used to express an anaemia occurring 54 at the age of puberty and in the great majority of cases, in the female sex. DIAGNOSIS. The diagnosis of chlorosis is included in that of anaemia in general. There is nothing special with regard to the blood to mark it as a distinct disorder. In mild cases there may be a normal number of blood corpuscles, and a reduction in the amount of haemoglobin which may be but 60, or even 50, per cent, of the normal. In severe cases the number of corpuscles and the percentage of haemoglobin are both reduced. In the well-marked case of a young lady aet. 17, whose blood I recently examined, I found the following figures :— No. red corpuscles per cubic millimetre, 2,690,000. Color (haemoglobin)......32 per cent. The percentage of red corpuscles (haemic unit), as compared with the normal (5,000,000), was 54, so that the value of each corpuscle was only |f of the normal, making the 2,690,000 corpuscles found equal to 1,594,080 normal corpuscles. The corpuscles were smaller than normal and perfectly circular in outline. The white cells 55 were not increased. With reference to the mere number of the red corpuscles in chlo- rosis, Hayem gives 3,520,000 as the mean of eighteen counts (about 70.4 per cent.), and Coupland about 3,000,000, or 60 per cent, as the mean in seven cases. As concerns the size and shape of the corpuscles, there are different statements. As a rule, they vary considerably in size, but the average is below the normal. This is also the opinion of Hayem and Laache, while Malassez considers the average size of the corpuscles to be increased. This discrep- ancy may be due to the fact that in the more intense forms, those approaching pernicious anaemia in their symptoms, there is a greater number of large-sized corpuscles. In perni- cious anaemia the average size of the corpus- cles is decidedly above the normal, and since this fatal affection is due, in my opinion, rather to the prolonged operation of the ordinary causes of anaemia than to one that is specific, it is evident that those cases of chlorosis which approach the border line will show a greater number of large corpuscles than those further removed from it. Chlorosis is to be distin- guished from Bright's disease, especially the 56 insidious form so often associated with con- tracted kidneys, and from the early stage of phthisis. The former differential diagnosis is to be made by careful, perhaps repeated, exam- inations of the urine; the latter by means of the thermometer. According to Peter, the sur- face temperature of the superior intercostal spaces is normal or subnormal in cases of chlo- rosis, and the same on both sides ; whereas, it is elevated on both sides, with a difference be- tween the two, in latent tuberculosis. In chlo- rosis, also, the phosphates of the urine are below the normal figure, while in early phthisis phosphaturia is quite common. The cardiac murmurs in chlorosis should not be too hastily set down as haemic. An interesting case in point is reported by Dr. T. K. Chambers (" Re- newal of Life ")—that of an unmarried servant, aet. 25, with symptoms of anaemia so marked that the attempt to stand upright caused faint- ness. There was pain in the cardiac region and a loud blowing murmur with the first sound. " This blowing murmur was very audible all over the cardiac region and up the large vessels into the neck, but loudest, and of a harsher character than elsewhere, just at the level of 57 the aortic valves." Under the use of Mist. Ferri Comp. all the anaemic symptoms disap- peared in twenty-one days, although the " car- diac murmur remained as loud, if not louder, and was equally ringing in its tone at the level of the aortic valves." There had been no his- tory of acute rheumatism, and Chambers con- cluded—and I think most justly—that the car- diac lesion was one of arrest of development. PROGNOSIS. The prognosis of recent, uncomplicated chlo- rosis is good. If of long duration, the nutrition of the cytogenic organs may have suffered to such an extent that they are incapable of re- suming their normal functional activity. The case is now inveterate, or pernicious, and its progress is, as a rule, from bad to worse. The blood corpuscles now resemble those of the amphibia in their number, their size, their shape and their percentage of haemoglobin, and re- covery is all but hopeless. Intercurrent febrile and inflammatory affections are more than usu- ally dangerous in cases of chlorosis. The com- plications to be dreaded in chlorosis are phthisis, gastric ulcer, endocarditis and chorea. There also seems to be a certain causal relationship 58 between chlorosis and exophthalmic goitre— Graves' disease. The best test of the ultimate prognosis is the immediate effect of proper treatment, the response to which in chlorosis is remarkably prompt and decided. TREATMENT. For the treatment of uncomplicated chlorosis, we have a specific in the preparations of iron. To show numerically the effect of this drug, I append the following figures from a case published by me in the Cartwright essay, 1881:— April 23d, No. red globules per c. mm., 1,870,000 April 30th, " " " 2,945,000 May 7th, " " " 3,905,000 May 19th, " " " 4,315,000 June 16th, " " " 4,695,000 " This case affords a remarkable instance of the effect of iron in the treatment of certain forms of anaemia. It is classified under the head of chlorosis, on account of the menstrual troubles to which the patient has been subject since the period of puberty, the habitual delicacy of her constitution depending, so far as can be ascertained, upon a chronic deficiency in the blood-making function; and, finally, on account 59 of the haemic cardiac murmurs, which gradu- ally disappeared as the quality of the blood improved." The preparations used were, first, the reduced iron, which was afterward changed to the pyrophosphate. Blaud's pill, the proto- chloride of iron in pill form (Rabuteau's pill), the lactate and the malate, may all be employed. There are many cases in which, owing to digest- ive troubles, iron cannot be immediately em- ployed. The best method of preparing such patients for specific treatment with iron is a more or less systematic employment of the rest cure, including massage, passive exercise, and a carefully regulated, nutritious diet. Before administering iron, the physician must be satis- fied that a cardialgia, if present, is not dependent upon a gastric ulcer. To effect a cure, iron must sometimes be given in heroic doses. Valuable therapeutic data may be obtained by frequent examinations of the blood during the treatment of a case. ANAEMIA LYMPHATICA. This disease is almost as rich in synonyms as in symptoms. In addition to the title at the head of this section, the following terms are commonly applied to it: Adenia, Pseudoleu- 60 kaemia, Malignant Lymphoma, Lymphaden- oma, Lymphosarcoma, and Hodgkin's Disease. These are far from being equally appropriate ; but something can be urged in favor of each one of these terms, in accordance with the point of view of him who applies it. Thus, the sur- geon, having his attention directed to the ex- ternal manifestations of the disease, will natu- rally employ one of the titles ending in oma, while the countrymen of Hodgkin will con- tinue to make use of the one which associates with the disease the name of the discoverer. I have already written upon this subject, under the title " Hodgkin's Disease," with the explan- ation that "the perplexing nomenclature of this affection has led the writer to adopt the term ' Hodgkin's Disease,' in the belief that it is more generally understood than any of the other terms employed." From the present standpoint, that of anaemia, it seems to me that the term Anaemia Lymphatica is to be pre- ferred. I refer those who may be interested in investigating the claims of Hodgkin to the dis- covery of this disease to the Medico-Chirurgical Transactions, Vol. xvn, 1832, where it is first clearly described from a clinical point of view. 61 From a purely anatomical standpoint, Malpighi deserves the honor of having been the first to call attention to the pathological combination of enlargement of the splenic corpuscles which bear his name with general hypertrophy of the lymphatic glands. This is proved by the fol- lowing quotation, which was brought to the notice of Dr. Hodgkin by Mr. G. O. Heming: " In homine difficilius emergunt (speaking of the granules in the spleen), si tamen ex morbo universum glandularum genus turgeat, mani- festiores redduntur, aucta ipsarum magnitudine, ut in defuncta puella observavi, in qua. lien globulis conspicuis racematim dispersis totus scatebat." The anatomical features of anaemia lym- phatica are hypertrophy, more or less general, of the lymphatic glands ; hypertrophy of the spleen, due to enlargement of its Malpighian bodies ; the development of adenoid tissue in various parts of the body ; a high, although usually not extreme, degree of anaemia ; and the absence of leucocythaemia. It usually be- gins as a local, glandular swelling upon the surface of the body, which may remain lim- ited for weeks or months to one lymphatic 62 group. We are ignorant of any law governing the extension of the glandular enlargement. At times it follows the course of the lymph stream ; at others, beginning in the neck, axilla or groin, it will next attack glands in either of these situations on the opposite side. The superficial glands are usually chiefly involved, especially those of the neck and axilla, but cases have been observed in which the morbid process has been limited to the deep lymphatics of the trunk. In a case reported by Osier {Canada Med. and Surg. Journal, Feb., 1881) the retro-peritoneal glands were the only ones affected. The enlargement is not inflamma- tory, neither does it cause inflammation in the surrounding connective tissue. The individual enlarged glands are, therefore, freely movable upon each other, and not united into a dense mass, as in scrofula. Their consistence varies. They may be soft, almost to the point of fluc- tuation, or of nearly cartilaginous hardness, but no division of the disease can be based upon such differences, for hard and soft glands may be present in the same case at the same time. While the changes characteristic of scrofula —chronic inflammation, suppuration and case- 63 ation—are conspicuous by their absence, there is no positive antagonism between " lymphad- enoma" and scrofula, and, therefore, such changes are now and then encountered. They may be excited by traumatism of the super- ficial tumors. On section, the soft glands are gray or grayish red, and yield an abundant turbid juice, while the hard ones are, on section, of a yellowish white color, and exude a thin, transparent fluid. Ecchymotic spots and apo- plectic extravasations may be present in both forms of tumor. Under the microscope, the difference in consistence of the growths is found to be owing to the degree of thickening of the glandular reticulum and septa. The soft tumors are due solely to numerical increase of the cells, which differ, for the most part, in no respect from normal lymph cells, although, here and there, larger, darkly granular cells, with two or three nuclei, may be met with, and true giant cells, with ten to twenty nuclei. The hard tumors present the same appearances, with more or less thickening of the glandular connective tissue. The splenic enlargement, although a char- acteristic feature, is believed to be generally 64 secondary to that of the glands, for cases have been observed in which, with general involve- ment of the latter and secondary formations of adenoid tissue in other organs, the spleen re- mained normal. The enlargement of the spleen is mainly due to an hypertrophy of those masses of adenoid tissue which so closely resem- ble the lymphatic glands—the Malpighian cor- puscles. The spleen, in this disease, never attains the colossal size it sometimes reaches in leucocythaemia, its long diameter rarely exceeding ten inches. The diameter of the hypertrophied Malpighian corpuscles varies from that of a pin's head to one or two centimetres, and their white or yellowish color, like that of the lymphatic glands, contrasted with the dark red color of the pulp, gives to the cut surface a characteristic variegated appearance. Adhe- sions of the capsule of the spleen to neighbor- ing organs are commonly met with. The en- larged corpuscles may easily be mistaken for tubercular masses, especially as, under the microscope, they are seen to contain the same elements, namely, small round cells, more or less altered in appearance, and giant cells con- tained in a reticular tissue. The arrangement 65 of these constituents, however, is, according to Langhans, different from that of tubercle. In the tubercular nodule the reticulum is in the centre, or in a zone between the periphery and the centre, while in the lymphadenoid nodule the reticulum occupies the periphery, the cells the centre. The infective nature of Anaemia Lymphatica is shown by the development of adenoid tissue in organs and tissues of which it is not a normal constituent, such as the liver, kidneys, lungs, heart, testicles and digestive tract; less fre- quently the bones, skin and nerve centres. The metastatic nodules spring from the connective tissue of the organ ; in the lungs, from the peribronchial connective tissue ; in the liver, from the capsule of Glisson, etc. The suppo- sition that they may arise from the endothelial cells of the lymph spaces has not yet been established. The microscopic structure of the nodules has been most carefully studied in the liver, and their origin proved to be in the inter- acinous tissue, by the fact that a bile duct usually occupies their centre. Dr. Burdon- Sanderson, having observed a thickening of the walls of the intra-lobular capillaries and a E 66 vacuolated condition of the liver cells, thinks it probable that the growth may originate in the glandular tissue. Instead of nodules, a diffuse leucocytal infiltration of the inter-acinous tissue, as in incipient cirrhosis, is sometimes observed. In the lungs, the nodular deposits have been often mistaken for tubercle. They invade the organ from behind forward, starting from al- ready enlarged lymphatic glands. In the kid- ney the deposit assumes the form of inter-tubular streaks. .On the serous membranes it occurs in the form of flattened patches, which may be half an inch in diameter. Under the influence of this disease the thymus gland may, although almost completely atrophied, resume its original shape and size. The follicles at the base of the tongue, the tonsils and the retro-nasal adenoid tissue (" pharyngeal tonsil "), may be so greatly enlarged as to completely occlude the posterior nares. The thickening of the intestinal walls from new formation of adenoid tissue may be enormous, but it has never been known to cause stricture. In a case reported by Dr. Murchison, the walls of the duodenum were from one to two inches thick, and yet the " intestinal mucous membrane corresponding to the morbid deposit 67 was not ulcerated, and the calibre of the gut did not appear materially narrowed." Various forms of paralysis may be due to the deposit having its seat in the nerve centres, but such cases are exceedingly rare. The blood is dimin- ished in quantity and of poor quality. Macro- scopically, it is light colored, thin and un- coagulated in the heart chambers, or, if coag- ula are present, they are quite small. Careful counts of the blood corpuscles have proved that the diminution in their number is, as a rule, by no means so great as that observed in cases of per- nicious anaemia. In four cases carefully studied by Laache the greatest reduction in the number of the red corpuscles was 1,830,000 per cubic mil- limetre, the count having been made eleven days before the death of the patient. In a case of my own, a boy of five, with enormous en- largement of the right cervical glands, the num- ber of corpuscles per cubic millimetre was 5,462,000, while the haemoglobin was only sixty per cent, of the normal; so that the functional value of the corpuscles was diminished by forty per cent. In a case reported by Dr. Richard Geigel {Deutsches Archiv fur Klinische Medi- an, Bd. 37, p. 59, 1885), that of a boy twelve 68 years old, the right side of whose neck was occu- pied by a glandular tumor as large as a child's head, almost daily counts of the blood corpus- cles were made from June 7th to July 23d. The lowest count was 960,000, on July 12th. The percentage of haemoglobin was never estimated. Effusion into the pleural and abdominal cavi- ties is often found, and may be due to the irri- tation caused by growths of adenoid tissue upon these membranes, or to the pressure of en- larged glands upon the vena azygos and the vena portae. Hydrops lactea may be caused by the pressure of enlarged glands upon the thoracic duct. The bone marrow is very rarely affected. Birch-Hirschfeld knew of but one case in which this tissue was abnormal. The bones themselves, especially the vertebrae, sternum and ribs, may be eroded by the pres- sure of enlarged glands. Nature of the Disease.—This is best under- stood by comparing it with another disease, with which, but for an examination of the blood, it would certainly be confounded, namely, leucocythaemia. Langhans, in view of the fact that the principal distinction between these two diseases is the absence in the former 69 of an increase in the number of white corpus- cles, has suggested their classification under one head, such as adenia or lymphadenoma, with the division into a leukaemic and a non- leukaemic form. Dr. H. C. Wood is of the opinion that, " clinically, the so-called true and false leukaemia are the same, save only in the matter of the white blood corpuscles." This is also the view of Dr. Wm. Pepper, who in- cludes under the term " an&matosis " the affec- tions which I have grouped under the head of primary anaemia, with the exception of chlo- rosis. The term is apt, convenient and com- prehensive, but has not been widely adopted. While admitting the fundamental relationship between these various forms of anaemia, I think that better scientific work will be accomplished by continuing to treat them as separate affec- tions, by dwelling upon their points of diverg- ence. In fact, the tendency of late has been rather to separate than to unite anaemia lym- phatica and leucocythaemia. Dr. Moxon and others hold that there is no such disease as pure lymphatic leucocythaemia, the grounds for which will be stated in treating of leucocy- thaemia. 70 The disease may be defined as an infective hyperplasia of the lymphatic tissue of the body, with progressive anaemia. Symptoms.—These are due to the pressure of enlarged glands and new formations of adenoid tissue in the most various situations, causing stenosis of ducts, blood vessels, air passages, oesophagus, etc. ; and to the profound disturb- ance of nutrition and resulting anaemia, which set in sooner or later. By the pressure of the enlarged cervical and bronchial glands may be caused cough, dyspnoea and difficult deglutition, which may all be aggravated by the simul- taneous enlargement of the tonsils and retro- nasal adenoid tissue. The cerebral circula- tion may also be disturbed by pressure upon the cervical veins. In the axilla, enlarged glands may cause brachial neuralgia and oedema, and enlarged inguinal glands may give rise to similar disturbances in the lower extremity. Enlarged portal glands may give rise to ascites and jaundice. Sensory and motor paralysis may be caused by growths in the brain and spinal cord. Digestive disturbances may be due to the growth of adenoid tissue in various portions of the alimentary canal. As a 71 rule, the glandular enlargement does not cause pain and is not tender, or very slightly so, on pressure. The same is true with regard to the spleen, but occasionally the hypertrophy of this organ gives rise to a sense of weight and drag- ging in the left hypochondrium, or even pain that may radiate to the back and opposite side. Pyrexia is frequent during the course of the disease, but presents nothing characteristic, being sometimes continuous, at others remit- tent or irregularly intermittent. Murchison and De Renzi have each observed a case in which the glandular enlargement, instead of gradually increasing, was paroxysmal, coinciding with attacks of pyrexia of several days' duration. After each attack the enlargement subsided, but remained greater than before. On the other hand, Laache has reported a case in which during the febrile attacks the glands diminished in size. He suggests, in explanation, that a pyrogenic material may be absorbed from the glands. In the great majority of cases no change in the dimensions of the enlarged glands is observed during the attacks of fever. The remaining symptoms are those of steadily progressive anaemia, namely, muscular weak- 72 ness, paleness of skin and visible mucous mem- branes, palpitation of the heart with sometimes a systolic murmur, frequent pulse, epistaxis, oedema, and serous effusion not accounted for by mechanical obstruction. Diagnosis.—This presents certain difficulties when the enlargement remains for a long time limited to one glandular group. It is to be distinguished from scrofula, sarcoma and car- cinoma. Strumous glandular enlargement is generally associated with other signs of scrofula, such as affections of the bones, joints, skin and mucous membranes, and especially with the characteristicyaaV^ of the strumous diathesis. The glands, too, are usually adherent to each other and to the skin, and the morbid process slowly advances to an unhealthy suppuration. In sarcoma, also, the glands are adherent, whereas the tumor of anaemia lymphatica is dis- tinguished by the free mobility of the enlarged glands upon each other. This communicates an unmistakable sensation on palpation, which Southey has aptly compared to that experienced in handling a number of balls enclosed in a net. Carcinoma is almost always secondary, and extends by glandular contiguity, while, as 73 already remarked, there appears to be no law governing the direction of the progress of lymphadenoma. Leucocythaemia is excluded by a microscopic examination of the blood. Prognosis.—The prognosis of this disease is not so hopeless as might be inferred from the term, " malignant lymphoma," applied to it by Bill- roth. In estimating the probable course of a case, and its duration, the most important factor is the stage which the growth has reached. If local, a cure is not only possible, but highly probable, provided the tumor is situated in one of the superficial lymphatic groups ; that is to say, within the province of surgery. If the affection has become general, the prognosis is unfavorable ; but even then, individual cases present wide differences with regard to the rapidity of their downward course, depending chiefly upon the amount of pyrexia and the degree of anaemia. The average duration of the disease is about two years, but is largely influ- enced by the preceding health of the patient, being shortest in those of delicate constitution. It has been observed to run a very rapid course after parturition, especially when this had been accompanied with considerable hemorrhage. 74 Treatment.—An early diagnosis is the most important requisite to a successful treatment. In most of the cases on record the affection has remained limited to one of the superficial lymphatic groups for a varying period, during which the propriety of extirpating the tumor should be considered. By this means the dis- ease may sometimes be cured and its progress often delayed. The enlarged glands must sometimes be removed as a palliative measure, when they threaten to destroy life by impeding respiration or deglutition, or cause intense pain by pressure upon nerves. Friction over the en- larged glands has been said to cause a reduc- tion of their size, and the same result has been attributed to the application of electricity. The general nutrition of the body should be main- tained, as far as possible, by a diet as generous as the digestive system can dispose of. The anaemia should be combated with iron and arsenic, and the latter is believed to exert a specific action when injected into the morbid growths. Warfwinge reports several cases cured by the intra-splenic and intra-glandular injection of Fowler's solution. He injected four drops of the solution thrice daily, and observed 75 a steady reduction of the size of the tumors and a gradual improvement of the condition of the blood. LEUCOCYTHAEMIA. The consideration of this disease naturally follows that of the one which has so often been mistaken for it. From the point of view that the genuine should always have precedence over the spurious, it might well have come first in order, but the object of this work, as its name implies, is to keep prominently in view the anae- mia common to the various disorders of which it treats. From this standpoint, the anaemia of pseudo-leukaemia, being uncomplicated, de- serves the precedence. Nomenclature.—Of the two names of this dis- ease, leucocythaemia (white-cell blood) and leu- kaemia (white blood), the former is certainly the more accurate ; for the latter might be applied, with equal propriety, to the appearance of the blood after a meal containing an abundance of fat, and in many cases the blood presents to the unaided eye no deviation from the normal ap- pearance. Nevertheless, the term leucocythae- mia has been practically rejected by German writers, whose important contributions to our 76 knowledge of this disease entitle their prefer- ences—or prejudices—to respectful considera- tion. I shall, therefore, employ both terms interchangeably in the course of this article, giving the preference, when an adjective is needed, to that derived from the shorter of the two. Anatomical Characters.—This disease is pre- eminently one to which the term organic or structural may be applied; for it cannot be said to exist until a striking change in the composi- tion of the blood has become manifest. The degree of this change — the increase in the number of the white cells—necessary to con- stitute the disease, is not agreed upon ; and this is not surprising, since, as all are aware, the number of these bodies in healthy blood can only be approximately stated. In health, after meals, the number of leucocytes in the blood is increased, and this increase coincides with a congestion and tumefaction of the spleen, of which the elastic capsule is specially adapted to these periodic changes of volume. This condi- tion of physiological increase in the number of the white cells is known as leucocytosis, and the same term is applied to the undue proportion of 77 these bodies sometimes observed in fevers and during pregnancy. A narrow boundary line between leucocytosis and leucocythaemia cannot be drawn. They are, rather, separated by a broad strip of territory, which either may invade. During the progress of a case of leucocythaemia that may eventually end in death, there may be periods of remission, during which the pro- portion of white cells to red may be but little removed from the normal; and, on the other hand, a state of the blood at first regarded as a mere leucocytosis may gradually, by its per- sistence and further progress, convince the ob- server that he has to deal with a genuine leuco- cythaemia. The tendency, however, is, rather, to regard leucocytosis as leucocythaemia than the reverse. Three, forms of leucocythaemia are described —the splenic, lymphatic and medullary, which are secondary to changes in those organs—the spleen, lymph glands and bone marrow, uni- versally accepted as hcematopoietic, or blood making. Cases have been supposed to be due to lesions of other organs, such as the thymus and thyroid bodies, the tonsils and intestinal glands, but these were mostly reported before 78 Neumann had directed attention to the marrow as a fons et origo mali, and there is no proof that such cases were not of the medullary or myelogenous form. As the affection is mostly one of adult life—the greatest number of cases occurring between thirty and fifty years of age —the part taken in its production by a foetal organ, such as the thymus, is highly prob- lematical. The first stage of the morbid process in the spleen is a hyperaemia, which may be so intense in degree and so rapid in development, as to cause great enlargement of the organ and sen- sations of discomfort, weight, and even pain, in the left hypochondrium. The tissue of the gland is soft and its surface irregular, the depressions corresponding to the insertions of the fibrous trabeculae. At this period the condition differs only in its degree and persistence from that which normally exists during digestion. Soon, however, the enlargement acquires a more per- manent—a structural—foundation, from numer- ical hypertrophy of the cells of the splenic pulp. The size of the organ increases, and may become so enormous as to fill the space between the ribs and groin on the left side, and extend 79 beyond the umbilicus on the right. The results of inflammation of the capsule are commonly apparent in the form of thickenings, opacities and adhesions to neighboring organs. The gross appearance of the cut surface is variable. Sometimes it differs in no respect from that of a normal spleen ; at others, all traces of the Malpighian bodies have disappeared ; the sec- tion is smooth and firm, closely resembling that of the liver. In the pure splenic form of leu- cocythaemia the Malpighian bodies, while, per- haps, plainly evident, are not enlarged. They become so only in the lymphatic and lieno- lymphatic forms. Hemorrhagic infarctions are often observed. The alterations of the lymphatic glands, like those of the spleen, are due to simple hyperplasia, and have been already described in the section on anaemia lymphatica. In leucocythaemia their consistence is usually soft. The changes in the bone marrow, to which attention was first called by Neumann, are two- fold. In the first form it is of grayish-yellow or yellowish-green color, and closely resembles a thick, creamy pus ; in the second, more or less of 80 red is mingled with the gray or yellow, until in the most marked degrees of this variety the medulla may be of the color of raw beef. These variations in color are explained by Ponfick as being due to varying densities in the accumulations of white cells and corresponding variations in the amount of blood in the vessels. The leucocytes are seen, under the microscope, to be embedded in an extremely fine reticular tissue. In this altered marrow there may be apoplectic extrav- asations such as have been described as occurring in the spleen and lymph glands. The bones, of which the medulla most frequently under- goes these changes, are the sternum, ribs and vertebrae. In other than lymphatic organs, any alter- ations are due to the altered state of the blood, and consist of the fatty degenerations common to anaemia in general and of infiltrations and nodular deposits of leucocytes. The infiltra- tions are most common in the liver and kid- neys, causing considerable enlargement of these organs. The nodules have been observed both in the substance of organs and on their serous surfaces, as well as on the mucous membranes of the air passages and stomach. The peri- 81 toneum may be covered with gray, semi-trans- parent nodules varying in size from a pin's head to a pea, and so closely resembling miliary tubercle in their gross and microscopic appear- ances that the absence of the bacillus may be the only differential point. The minute struc- ture of the nodules of this " leukaemic peritonitis" may also resemble that of alveolar sarcoma, as in a case described by Laache. Changes in the Retina.—In well-marked cases of leucocythaemia, certain retinal lesions are commonly observed, to which attention was first directed by R. Liebreich in 1861. Being generally situated near the periphery of the fundus oculi, they but seldom cause any visual disturbance, and, therefore, their frequency can only be estimated by an ophthalmoscopic ex- amination of all cases. The eye-ground is of an orange-yellow hue, its veins pale and wider than normal, and traces of hemorrhage are scattered along their course. Other spots are observed, of which the appearance indicates a more compound structure than that of mere hemorrhage. They have a whitish-yellow cen- tre and a reddish border of extravasated blood, and are analogous to the lymphoid deposits F K2 in other tissues. The cause of these retinal hemorrhages is twofold. They are favored by the malnutrition of the vessels from deficiency of red corpuscles, and excited by the obstructions from excess of the white. Changes in the Blood.—The characteristic feature of leucocythaemia is an absolute in- crease in the number of white blood cells, which in extreme degrees of the disease may be even greater than that of the red. This alter- ation in the cellular composition of the blood may alter its macroscopic appearance by causing it to assume a pale-red, grayish-red, or chocolate color ("milchchocolade") ; but it would be exceedingly rash to predict the exist- ence of leucocythaemia from a gross examina- tion of a specimen of blood. Such a caution will not seem unnecessary to those who, like myself, have seen a case reported as leucocy- thaemia in which the blood was never examined at all. The white cells are by no means uni- form in size. In one of Mosler's cases the smallest were one-third smaller than the red ; the largest four times larger than the red. It is doubtful whether, as Virchow supposed, any diagnostic significance can be attached to such 83 variations ; for in a case of pure splenic leucocy- thaemia the leucocytes have varied in diameter from 5 fi to 15//. Virchow holds that in the latter variety the leucocytes in the blood are identical with the cells of the splenic pulp, and that in the lymphatic form they are uninucleated like the cells of the lymphatic glands. Before attempting, however, to make the diagnosis of a disease, it is necessary to establish its existence, and that of the so-called lymphatic leucocy- thaemia is emphatically called in question. In the medullary form, Neumann has found in the blood, red nucleated cells such as normally in- habit the marrow, and regards them as charac- teristic of this variety. They are not always present, having been searched for in vain by Mosler in a typical case of medullary leu- kaemia {Berl. klin. Woch., 1876, No. 49). The degree of anaemia is rarely extreme. ases may steadily proceed to a fatal termina- tion without a reduction of more than fifty per cent, of the normal number of red corpuscles, although exceptional cases occur in which the number of red corpuscles is exceedingly small; for example ,0.5 million per cubic millimetre. There are no characteristic changes in the size S4 and shape of the red corpuscles. The value of the latter (their percentage of haemoglobin) is well maintained, rarely sinking below seventy- five per cent. A point of some importance with reference to the pathogeny of the disease is that the number of white and red cells to- gether is less than that of the normal number of red. Certain pointed octahedral crystals were discovered in leucocythaemic blood by Charcot in 1853, identical with those subsequently ob- served by Leyden, in 1871, in the sputa of asthmatics. In i860, in a case reported by Dr. Calvin Ellis, Dr. White found " numerous mi- nute crystals. They were colorless, elongated, faintly marked, rhombic octahedra, exhibiting irregularities of form, indicating an organic na- ture." To these crystals he gave the name of " Leukosin." In 1863 Dr. Howard Damon dis- covered, in the leucocythaemic blood of a boy, certain crystals which, he asserts, " differed en- tirely, in form, size, color, degree of resistance at atmospheric influences, refractive and other properties, from all known crystals of the human blood.'' They were composed of " hexagonal and pentagonal plates of unequal sides, of rec- tangular plates in the form of squares and 85 parallelograms, and also of a few triangular plates. Some of these crystals were twice the size of the red blood corpuscles in the same field of view." The name of "Leucocrystallin " was applied to them by Dr. Damon.* Certain normal constituents of the spleen have been found in leucocythaemic blood, such as lactic and formic acids, leucine and hypoxanthine. The specific gravity of the blood is diminished in leucocythaemia owing to the fact that the red corpuscles are replaced by the lighter leuco- cytes ; and, further, because the normal propor- tion of water is retained. The proportion of fibrin is, as a rule, increased. Clinical History.—In the insidious nature of its onset, and its gradual progress, leucocy- thaemia resembles many fatal diseases which run a chronic course. The first symptoms com- plained of are those of anaemia in general, such as muscular weakness, lassitude, indisposition to exertion, either physical or mental, anorexia, indigestion, and dyspnoea, on exertion. As the case progresses, other symptoms arise, of which some are to be attributed to leukaemic deposit in * See Bolyston Prize Essay on Leucocythaemia, 1864. Sli the parts affected. Among these are hemor- rhages, either spontaneous or traumatic; the former variety being most commonly met with in the form of epistaxis ; the latter, after the ex- traction of teeth. Diarrhoea is now the rule, and oedema of feet and legs and ascites finally set in. The last-named symptoms are most common when the spleen is greatly enlarged and indurated, and are favored by deposits in the liver and by the leukaemic peritonitis above mentioned. Singular anomalies are sometimes observed in the course of this disease. For ex- ample, although the appetite is generally mark- edly deficient, often to the point of absolute anorexia, it may be voracious, as in a case observed by Prof. Da Costa (Am. Jour. Med. Sci., Jan. 1875), in which, in spite of an inordi- nate consumption of food and the absence of diarrhoea, the loss of flesh was progressive. On the other hand, in a case reported by Mosler, in which the blood was chocolate-colored and the white cells were to the red as two to three, the digestion was unimpaired and the body weight maintained. Dizziness, aggravated by move- ment, may be a marked symptom. In the splenic form, sensations of weight, dragging 87 and pain are felt in the left hypochondrium ; and in the medullary variety, tenderness of bones, particularly the sternum, may be detected. Visual disturbances may be due to hemorrhage, to leukaemic deposit, or to leukaemic retinitis ; but marked retinal changes may be observed in cases which have presented no symptoms of eye disease. There is no peculiar facies of this disease. The extreme pallor of pernicious anae- mia is rarely observed. On the contrary, the cheeks often present a circumscribed flush, even in a late stage of the affection. There is nothing typical in either pulse or respiration, but fever of irregular type is invariably met with at some period of the clinical history. The proportion of white cells to red is diminished by the occurrence of suppuration in any part of the body. When the leukaemic cachexia is fairly established, the enlarged spleen may diminish greatly in size without any corresponding im- provement in the symptoms. In a case reported by Laache, the spleen, which had projected to the right, beyond the median line and downward almost to the symphysis pubis, gradually con- tracted until, just before death, it extended but three centimetres below the left costal border. 88 Hypoxanthine is found in the urine as well as in the blood, and in the former fluid the pro- portion of uric acid is increased, sometimes to six or eight times the normal. A division of the course of the disease into two stages has been suggested: the first con- sisting of the development of the morbid pro- cess in the haematopoietic organ or organs first attacked and in the blood; the second, of the extension of the process to other non-lymphatic organs. This division, although excellent from an anatomical standpoint, is too objective for clinical purposes. The secondary leukaemic deposits can- not be detected, as a rule, in any organs but the lymph glands, assuming, for the moment, that the enlargement of these organs is secondary. Pathogenesis.—To properly appreciate the cause of any deviation from the normal com- position of the blood, it is necessary to under- stand how that composition is produced and maintained. In the problem before us—the nature of leucocythaemia—the first step is to de- cide whether there is any normal relationship between the red and white cells. If-there be any, it is manifest that the red, on account of their greater functional importance, their size, 89 shape, color and number, are derived from the white, and not the white from the red. The question, therefore, is one concerning the origin of the red corpuscles; and those who have studied it will doubtless agree with me that there is scarcely a subject in physiology con- cerning which our notions are so fragmentary and confused. This being the case, it is im- possible to offer more than an hypothesis of the nature of leucocythaemia. All authorities are agreed that in adult life the lymphatic system—in which are included the spleen, lymphatic glands, and red marrow —is the sole source of the red blood corpuscles. The cells of the splenic pulp, the smaller uni- nuclear cells of the lymphatic ganglia, and the red, nucleated marrow-cells—first described by Prof. Neumann, of Kbnigsberg, in 1868, and subsequently called by Malassez, "cellules hemoglobiques''—are by some, perhaps different, means converted into the bi-concave discs of the circulating blood. Time is requisite for this conversion—a time of incubation in the blood- making organs. Any unusual activity of the circulation in these glands may hasten the exit of their cells, and cause them to appear in the 90 blood in an immature condition. This is demon- strated by the physiological concurrence of leucocytosis with splenic post-prandial conges- tion. In leucocythaemia, there is a persistent hyperaemia of spleen or other blood-making organ, which prevents the leucocytes from at- taining their proper development. They enter the circulation as leucocytes. This view is endorsed by Dr. Richard Norris, of Birming- ham, and held by others, who do not agree with him concerning the stages of the process by which the white cells are normally elaborated into red corpuscles. Norris contends that in health the great majority of the leucocytes in the blood-making organs are, before entering the circulation, converted into a pale, colorless, bi- concave disc, which he terms the " advanced lymph disc." This corpuscle acquires haemo- globin, and with it its full functional perfection. The white blood corpuscles represent those leucocytes which have prematurely entered the circulation, for instance after a meal. These lat- ter, however, may develop into red corpuscles in the circulation. The former mode of ori- gin of red corpuscles Norris calls the " major process" of blood-formation ; the latter, the 91 " minor process," and, therefore, in accordance with his views, " leukaemia, in a word, is the encroachment of the minor upon the major process of blood-making." Several observers have noticed a diminution or absence of amoeboid movement in the white cells of leucocythaemic blood. " The earliest observations on this point were made by Dr. Laking, in 1873, but remained unpublished. The results were communicated by Dr. Pye- Smyth to the Pathological Society in 1878, and, in the same year, to the Lancet, by Dr. Cafavy. Neumann also, in 1878, found amoeboid move- ments wanting, or very sluggish, in a case of leukaemia, although they were active in the corpuscles of fluid from blisters in the same patient." (Lancet, 1880, ii, 769.) Dr. John Cafavy, who has given special attention to this subject, concludes that " the colorless corpuscles in leukaemia are dead, or dying, and hence incapable of development." This functional incapacity of the white cells may be referred to the shortness of their stay in the lymphatic organs, of which the hyperaemia prevents their reaching the normal term of their gestation. They are to be regarded as abortive products. 02 Under this section it is appropriate to con- sider the question, which has been raised, as to whether the customary division of this disease into three varieties, the splenic, lymphatic and medullary, is warranted. A primary splenic leucocythaemia being universally accepted, it remains to consider whether the lymphatic glands and the bone marrow may be the start- ing point of the disease. Some authorities, while not explicitly rejecting the lymphatic and medullary varieties, do so tacitly by describing no other than the splenic. Dr. Moxon is the most outspoken upholder of the doctrine that the spleen is the only starting point of leuco- cythaemia, and emphatically rejects the theory of a lymphatic leukaemia, which he stigma- tizes as a "myth." He holds that the enor- mous accumulations of leucocytes in the lymph glands and bone marrow are secondary de- posits from the blood, and, in support of this view, he has demonstrated that the leucocytes normally present in the lymph spaces—which have been shown by Dr. Klein to be out-wan- dered white blood cells—are greatly increased in number in cases of leucocythaemia. These cells are conducted through the lymphatic 93 vessels to the glands, and if these are pervious, re-enter the blood; if not, the glands enlarge by the continual accession of out-wandered blood cells ; " so that," Dr. Moxon concludes, " lymphatic leukaemia is a myth ; and the pathology of leukaemia, now so complex, should be simplified, when it will better conform with the clinical uniformity which characterizes the disease." I am inclined to accept Dr. Moxon's opinion in so far as the lymphatic variety is concerned, for the reason that in anaemia lym- phatica we find a lesion of the glands identical with that which exists in lymphatic leukaemia. The last-named affection, assuming its existence for the sake of the argument, is made up of lymphatic anaemia plus leucocythaemia. I be- lieve, however, that there is substantial proof of the existence of a primary medullary leukae- mia. For example, in a case observed by Vir- chow, fracture of the femur appeared to be the determining cause. In another, reported by Mursick, the disease attacked a soldier five days after amputation for a gunshot wound of the knee-joint, and at the autopsy osteo-myelitis of the femur was found. The patient had been previously healthy. In the remarkable case of a 94 sea captain, reported by Mosler, in whom the dis- ease followed prolonged exposure to cold during an Arctic winter, pain and tenderness over the entire length of the sternum were among the earliest symptoms, and speedily became so in- tense as to compel the man to desist from any kind of manual work. The list of cases such as those last referred to is so long, and the cases themselves so remarkable, that those who are at all familiar with them feel the ne- cessity of great caution in discussing the ques- tion of a primary medullary leukaemia. As above stated, I believe the evidence is in favor of such an affection, and, with the object of obtaining further confirmation, I would suggest to hospital surgeons and their assistants the im- portance of examining the blood after injuries of the bones. ^Etiology.—The male sex is more predisposed to this disease than the female, the male cases on record standing to the female in the pro- portion of about two to one. The influence of age is not striking, although the disease occurs most frequently during adult life, and between the ages of thirty and fifty. Neither infancy nor old age is exempt. Cases in infants of 95 fifteen and sixteen months have been reported by Trousseau and Mosler, and one of Vidal's cases was sixty-nine years old. Dr. Goodhart has also reported to the Clinical Society of Lon- don six cases under two years of age. Poverty includes, in one word, a number of predisposing factors, such as an unfavorable hygienic en- vironment, insufficient food, and the depressing emotions of care and anxiety. A few cases have been attributed to traumatism of the spleen, and others, as already stated, to that of the bones. There can, I think, be no doubt that long-continued exposure to severe cold has excited the disease in several instances. Diagnosis.—This can be made in no other way than by a microscopic examination of the blood, and to warrant the diagnosis of leucocy- thaemia, the increase in the number of the white cells must be absolute as well as relative. In well-marked cases the microscopic inspection of a drop of blood will suffice for the barest pur- poses of diagnosis, but will give no idea of the grade of the affection. With the latter object in view, the number of red and white cor- puscles in a given volume of blood—a cubic millimetre—must be estimated by means of a !)6 hemacytometer, such as that of Gowers or Zeiss. I have more than once refuted a di- agnosis of leucocythaemia which had been made by the examination of a drop of blood under the microscope. In one of the cases the diagnosis thus made seemed unmistakable, but on carefully counting the red and white cells, I found a great reduction of the former, and a proportion of one to eighty between the white and red, but the number of the white cells Per cubic millimetre was within normal limits. In every case of profound anaemia in which the number of white cells is not reduced pari passu with the red, the diagnosis (?) of leucocythaemia is liable to be made, unless the most accurate methods of investigation are employed. I have seen as many as from twelve to fifteen white cells in each microscopic field of a specimen of blood of which a more careful examination showed that the increase was merely relative. The liability to error being so great, what is the increase, absolute and relative, which warrants the diagnosis of leucocythaemia ? There is no fixed rule. Each observer is a law unto him- self. For my own part, if the number of leuco- cytes per cubic millimetre is increased (i. e., if 97 they are more than 10,000), and if the propor- tion of white cells to red is as great as one to fifty, I consider that the limits of leucocytosis have been overstepped. This is confirmed by the co-existence of great tenderness of sternum, ribs or vertebrae, and made absolutely certain by the detection of any enlargement of the spleen. As to the question whether the pre- cise variety of the disease may be ascertained by an examination of the blood, there is little to be said. As already mentioned under the head of changes in the blood, the size of the white cells may vary greatly in the purely splenic form. The presence of red nucleated cells in the blood is believed by Neumann to be pathognomonic of the medullary variety, but their absence does not exclude an implication of the marrow. The absent or diminished amoeboid movement of the white cells is a point with which diagnosis is not so much concerned as pathogenesis, and, therefore, it has been re- ferred to under the latter head. Dr. Richard Geigel {loc. cit.) has suggested and practiced the following method for making easier the counting of the white cells. To fifty cubic centimetres of a one-half of one per cent. G 98 chloride of sodium solution, are added four drops of a one and one-half per cent, solution of gentian violet, and by using this in the counting of the corpuscles, instead of the ordi- nary diluting fluid, the red corpuscles are un- altered, while the leucocytes are stained blue, so that it is impossible to overlook a single one of them. The diagnosis of leucocythaemia having been made with the microscope, its variety is to be determined by the ordinary methods of physi- cal diagnosis. A case in which the spleen is increased in size, while nothing abnormal can be detected in lymph glands or bones, is one of pure splenic leukaemia. Combinations of enlarged spleen and lymph glands are desig- nated as lieno-lymphatic or lymphatico-splenic, in accordance with the supposed priority of the organ affected. The medullary form may also be complicated with an enlarged spleen or with hypertrophied lymphatic ganglia, and the same remarks are applicable to it. Prognosis.—In the earliest stage, that of hy- peraemia of the haematopoietic organ involved, a cure may be effected by a proper course of treatment. The prognosis is more unfavorable 99 when the enlargement of spleen or other organ is maintained by numerical hypertrophy of its cells, and becomes absolutely so when the leukaemic infection has become general. The latter event—the establishment of the leukaemic cachexia—may sometimes be demonstrated by an inspection of the fundus oculi, in which leu- kaemic deposits are readily seen. A not un- common mode of death is apoplexy, to which there is a predisposing cause from malnutrition of vessel walls, and an exciting one from ac- cumulation of leucocytes within their lumina. From one to three years is the average dura- tion of the disease. Treatment.—The cures reported have been mostly in children, which may be owing to the fact that their impressible systems render easier an early diagnosis. The very fact that their powers of resistance are less than those of adults is thus favorable, from a therapeutic stand- point. Dr. Goodhart has reported to the Clini- cal Society of London six cases of children, under two years of age, which were -cured by the administration of either phosphorus, iodide of iron, or cod-liver oil. In all of them the spleen was moderately enlarged and the white 100 cells increased about tenfold. Mosler also has reported the cure of a boy of ten years, who " took a drachm and a half of sulphate of quinine in the course of four days, and then ten grains, and afterward six grains daily ; he completely recovered." The case was of the splenic form. Mosler prefers quinine to all internal remedies, but recommends also the employment of oil of eucalyptus and piperin, in accordance with the results of certain experiments by himself and Hans Scenderop, which show that both these substances cause contraction of the spleen in dogs. They may be prescribed in pill, as in the following formula:— R-. 01. eucalypti, gtt. ioo Piperini, Cerae albse, aa 3) Pulv. althese, 3 ij. M. et ft. pil. No. C. SiG.—Three to five pills thrice daily. Careful counts of the blood corpuscles during the employment of arsenic, have proved that this drug has a favorable influence over the course of leucocythaemia. It should be given in full doses and pushed to the point of toleration. A local treatment of the enlarged spleen by 101 means of electricity, cold douches, and ice bags, has been practiced, and often with the result of materially reducing its size. Once, however, the disease is fairly established, the spleen may fluctuate very greatly in size, without any cor- responding effect upon the patient's condition. In the early stage of the splenic form, local treatment should not be neglected. Botkin re- ports a case of lieno-lymphatic leukaemia in which faradization wa's followed by a consider- able reduction in the long and transverse diameters of the enlarged spleen, which coin- cided with improvement in the general con- dition of the patient. In opposition it must be stated that Mosler has not been able to confirm th« statement that the size of the spleen is re- duced by faradization, but has seen its long diameter apparently diminished by being pushed upward by the contraction of the abdominal muscles. Transfusion of defibrinated blood has been employed with marked temporary benefit, but cannot be regarded as a curative measure. Extirpation of the spleen is only mentioned for the purpose of condemning it. Postscript.—Although not without an opinion 102 concerning the rival claims of Bennett and Vir- chow to the discovery of leucocythaemia, I have, thus far, purposely refrained from expressing it. It appears to me that the credit of having pre- sented the subject of leucocythaemia in such a light as to attract the notice of the whole pro- fession, and to convince Bennett that six weeks before he had discovered a new disease, un- doubtedly belongs to Virchow. I also think that when a labored argument, such as that of Ben- nett, is necessary to make good a claim, it is self-evident that the right of possession can be called in question. ANAEMIA SPLENICA. Definition.—This disease, which is the splenic form of'pseudoleukcemia, is completely ignored by nearly all the numerous text books, hand books, systems and cyclopaedias of medicine. Even Dr. Adolph Striimpell, who published an elaborate article in the Archiv der Heilkunde, Vol. XVIII, 1877, entitled Zur Kentniss der Ancemia Splenica, devotes but eight lines to this subject in his recent text book of medicine. Although apparently unknown to most of the writers of the works above mentioned, splenic 103 anaemia has long been recognized as a distinct affection by those who have paid special atten- tion to diseases of the haematopoietic organs. For example, in the course of an article on the " Relations of Leucocythaemia and Pseudoleukae- mia," in the American Journal of the Medical Sciences for October, 1871, Prof. Horatio C. Wood remarks: "1 now desire to show that there is still a third form of pseudoleukaemia—a splenic variety. Under the names of tumor of the spleen, splenic cachexia, etc., from time far back, medical records furnish accounts of cases which I believe represent this affection." He then proceeds to report a typical case of anae- mia splenica. The best account of this affection that I have been able to find in medical literature is by Dr. Guido Banti {Annali Universali di Medicina Chirurgia-Parte Rivisla, 1883), and is based upon a critical study of three cases : a woman of 73, a boy of 18, and a girl of 16. To it, as well as to the article by Stnimpell above re- ferred to, I am largely indebted for the follow- ing description. Anatomical Characters.—The cadaver pre- sents the well-known appearances of extreme 104 anaemia, and there is usually a certain amount of subcutaneous oedema and serous effusion. The spleen, while retaining its shape, is en- larged, sometimes to thrice its normal size ; its tissue is more or less indurated, and its in- cisures deeper than normal. The capsule pre- sents patches of thickening and opacity, and is sometimes adherent to neighboring organs. On the surface of a section which is of a reddish- brown color, white or yellow-white spots, usually not exceeding the size of a pea, may often be observed. With the microscope, it is found that the normal adenoid tissue has more or less completely disappeared, its place being more than supplied by a thickening of the reticulum, which, in parts of the organ, may be so great as to form parallel bundles of fibrous tissue, con- taining narrow lacume, in which are embedded a few lymphatic cells. The change is precisely similar to that of the indurated glands in anae- mia lymphatica, and in order to emphasize the fibrous character of the alteration in both these diseases, Banti proposes for it the name of fibroadenia. In the heart and voluntary mus- cles, fatty changes are the rule. The blood corpuscles are notably diminished. From 105 5,000,000 per cubic millimetre, they gradually descend to four, three, or even one million. In a case of my own their number was between one and two millions. They present the same alterations in size and shape as are encountered in all pernicious forms of anaemia. Notwith- standing Banti's assertion that red nucleated cells have never been observed in the blood of splenic anaemia, they are said, by Strumpell, to have been numerous, in his case, in blood from the veins of the lungs, liver and spleen. They varied greatly in size and shape, and were mostly uninuclear, although some con- tained two nuclei, and a few contained three. With reference to the proportion of white cells, the cases may be divided into two classes. In the first, the normal number of white cells is not surpassed. In the second, the white cells are increased in number, without, however, ex- ceeding the limits of leucocytosis. Their pro- toplasm is granular, and, on the addition of acetic acid, becomes transparent, and shows, as a rule, but one nucleus. They do not contain pigment granules, and, on a warm stage, ex- hibit well-marked amoeboid movements. The marrow may present the changes that 106 have been erroneously supposed to be peculiar to the so-called progressive pernicious anaemia. In Striimpell's case the medulla of sternum, ribs, and tibiae, was of a dark-red color, and of un- usually firm consistence, and presented the fol- lowing minute changes: i. Scarcely any fat cells were present. 2. The colorless marrow cells were of widely different size and shape, mostly uninuclear, though some contained two nuclei and others enclosed red blood corpuscles. 3. Besides the ordinary red blood corpuscles, there were numerous round, pale-red, non- nucleated cells of different size, and many red nucleated cells of varying size and shape, some round, others elliptic; the former sometimes granular, the latter mostly homogeneous. Their nuclei were often double, and of the same pale- red color as the rest of the cell; sometimes of a more yellowish tinge. Occasionally, the nucleus was enlarged so as to almost fill the entire cell; often it was placed eccentrically. Clinical History.—The disease may be pro- perly divided into three stages, of which the first, the enlargement of the spleen, is often so insidious as to pass for a long time unob- served by both patient and physician. It mani- 107 fests itself more frequently by a sense of weight in the left hypochondrium, which may be ex- perienced only when in the upright position. Sometimes, however, it gives rise to severe neuralgic paroxysms. The second stage, that of anaemia, presents the phenomena of anaemia in general, such as pallor of skin and mu- cous membranes, dyspnoea, cardiac palpitation and fatigue, on slight exertion. These symp- toms increase in severity until the third stage, that of cachexia, is reached. The distinguish- ing features of this stage are hemorrhage and fever. The skin is now the color of yellow wax; the muscular prostration is extreme ; the men- tal state is one of hebetude, and the oedema and serous effusions increase. The adipose tissue generally disappears to a greater or less extent, but is sometimes preserved. The disease, instead of being continuously progressive, may recur in separate attacks, between each of which there may be intervals of good health, of several months' duration. This intermittent character of the affection was particularly well marked in the case reported by Strumpell, that of a young man, aet. 25, who, in the course of eighteen months, was the subject of four attacks of pro- 108 found anaemia, each of which coincided with enlargement of the spleen. Twice he recovered from an apparently hopeless condition. A third attack ensued after several months of good health, and he was again improving when he fell into a state of melancholia, during which the fourth attack occurred and was fatal. Careful examinations of the urine were made by Striimpell in the case referred to. It was always acid, never contained albumin and, notwithstanding the icteric hue of the skin, never responded to the tests for bile pigment. Repeated examinations showed that the greatest destruction of albumin in the body, inferred from the amount of nitrogen excreted, coincided with the worst periods of the anaemic attacks. This fact is in perfect analogy with certain physiological experiments of Bauer and Frankel. The former found, after bleeding animals, that the destruction of albumin in their bodies was augmented. The same was true in cases of phosphorus poisoning, in which there is de- struction of red cells. Frankel demonstrated an increased excretion of urea after any obstacle to respiration had been placed in the large air passages. A similar increase had been demon- 109 strated in cases of carbonic oxide poisoning. As is well known, in cases of CO poisoning the functional power of the red corpuscles is para- lyzed ; they cannot carry O until the CO is dis- placed. In a word, experiments show that any cause which interferes with the conduction of oxygen to the tissues may produce secondarily an increased destruction of albumin in the body ; and this is found also in states of profound anaemia in which the diminished consumption of O is inferred with almost absolute certainty from the fact of an enormous destruction of O carriers, and is confirmed by the presence of fatty degeneration of heart, blood vessels, etc. Nature of the Disease.—Although anaemia splenica has been generally confounded with other forms of pernicious anaemia, there can be no question that it constitutes a distinct patho- logical entity. The enlargement of the spleen is primary, the anaemia secondary; as to the relation between them, there are two hypotheses —to wit: Either the altered spleen directly de- stroys the red corpuscles, or in it are formed materials which enter the circulation and inter- fere with the functions of haematopoiesis. Of these views, Banti espouses the latter. With no regard to the primary enlargement of the spleen, nothing is known. That the disease is the splenic form of pseudoleukaemia, is, according to the author just cited, proved by the following facts. In pseudoleukaemia (i.e., anaemia lymphatica, or Hodgkin's disease), the lymphatic glands are rarely the only organs affected; generally the spleen is enlarged at the same time. In some cases, the enlargement of the spleen is in much greater proportion than that of the glands, and, finally, there are cases (and these belong to the category of anaemia splenica) in which the spleen is alone involved. The view that this disease is the splenic form of pseudoleukaemia may be opposed on the ground that the morbid changes in the spleen in anaemia splenica are not identical with those of the same organ when affected in anaemia lym- phatica. In the latter disease, the malpighian bodies of the spleen, when that organ is second- arily affected, are hypertrophied to such an extent that, as I have said under the head of "Anaemia Lymphatica," "their white or yellow- ish color, like that of the lymphatic glands, con- trasted with the dark-red color of the pulp, gives to the cut surface a characteristic variegated Ill appearance." This change is beautifully shown in a plate illustrating an article on Lymphade- noma by Dr. Murchison, in the London Path. Soc. Trans., vol. XXI. In marked contrast to this description, the spleen, in the case reported by Prof. H. C. Wood, was much enlarged and indurated, but the " malpighian corpuscles were not at all evident." In summing up the ana- tomical characters of the disease, Banti says, with reference to this point: "The histological alterations of the spleen consist of an atrophy and sclerosis of the malpighian corpuscles," etc. These apparent discrepancies may be ex- plained in this manner: The spleen is not a lymphatic gland, but contains within its pulp numerous bodies—the malpighian corpuscles— analogous to the lymph glands. As the latter may, or may not, be enlarged in cases of pseu- doleukaemia—using this term in its broadest sense—so their analogues in the spleen may, or may not, be enlarged. Course and Prognosis.—The duration of splenic anaemia is from five or six months to three years. These figures are certainly within the mark, for in all the cases, owing to the insidious nature of the onset, more or less of 112 the first stage passes unobserved. The disease sometimes occurs in separate attacks, from all of which, except the last, there may be complete restoration to health; and, on account of this peculiarity in its course, there is great danger of prematurely reporting cases as cured. According to Strumpell, permanent cures are unknown ; but this opinion must be modified in favor of a few cases in which splenectomy has been prac- ticed successfully. Diagnosis.—The tumor being recognized as an enlarged spleen, by its situation, shape and mobility during respiration, the question arises as to the character of the enlargement. There is no difficulty in distinguishing the tumor in anaemia splenica from other tumors of the spleen which alter its normal shape, such as carcinoma and echinococci, but the tumors of amyloid disease, paludal cachexia and leukaemia are to be carefully differentiated. Amyloid disease is secondary to suppuration, especially in or about the bones; to syphilis, or to phthisis, and is not confined to the spleen. It may be demonstrated at the same time in the liver, and perhaps also in the kidney, by an examination of the urine. Leukaemia splenica is excluded by a careful 113 count of the white and red cells; and paludal cachexia by the history of the case and the presence in the blood of the plasmodium ma- lariae. A case of anaemia of high grade associated with a uniform splenic enlargement, not mala- rial, leukaemic, or amyloid, can be no other than one of anaemia splenica. Treatment.—The medical means of relief are the same as those employed in other pernicious forms of anaemia, and have been, thus far, attended with but little success. Among them are the salts of quinia, piperin, oil of eucalyptus, and arsenic. The latter may be given by the mouth, or may be injected into the splenic pulp, as has been done with marked success by Warfwinge, in cases of anaemia lymphatica. Faradization should be given a thorough trial; for, even admitting that it has no direct effect upon the spleen, there is reason to believe that a salutary influence is exercised upon that organ by the contraction of the abdominal muscles. Pain, vomiting, diarrhoea, ascites and epistaxis are to be treated in the same manner as in other diseases attended with these symptoms. Banti H 114 has tabulated the cases of splenectomy per- formed for non-traumatic lesions. They number twenty-one, of which four were undoubted cases of anaemia splenica. Of these four, three recovered. PERNICIOUS ANEMIA. Nomenclature.—The term idiopathic was first applied by Addison to certain cases of profound anaemia of unknown origin, which were in all respects identical with those subsequently described by Biermer, in 1872, under the title of " progressive pernicious anaemia." In the latter term the adjective " progressive " appears to me not only unnecessary but, to a certain extent, absurd ; for all diseases are progressive in one or other direction. In using the term " idiopathic," Addison was, no doubt, impressed with the idea that when the anatomical basis of a disease is unknown, it is best to apply to it a title acknowledging that ignorance. This I re- gard as an error. It is one thing to acknowl- edge ignorance and another to parade it. A terminology based upon etiology is doubtless the most scientific, but one based upon symptoma- tology is not unscientific. I fully agree with the late Dr. Fagge that the " phenomena 115 which are commonly spoken of as symptoms are part of the disease to which they belong, no less than the lesion or the specific cause or whatever is taken as its main characteristic." To those who may think these remarks unnec- essary, it is a sufficient reply that our knowl- edge of the causes of several forms of miscalled idiopathic anaemia dates from the time when Biermer substituted a significant symptomatic term for one that had nothing but vagueness to recommend it. Nature of Pernicious Ancemia.—In placing pernicious anaemia in the category of primary anaemias, although I do not regard it as an independent disease, I have not been incon- sistent. An anaemia becomes pernicious when the blood corpuscles undergo a series of changes which cause them to resemble, in more than one respect, the corpuscles of the amphibia. Pernicious anaemia is the final stage of several forms of symptomatic anaemia and of chlorosis. The prognosis of anaemia per se is good until the changes in the blood corpuscles above referred to are manifest. I cannot better explain my views with refer- ence to this affection than by quoting from an 116 article that I contributed to the Philadelphia Medical Times for April 3d, 1886. " The most interesting fact in connection with the exami- nation of the blood of pernicious anaemia, and one to which, so far as I know, attention has never been particularly directed, is that it demonstrates a reversion to the type of blood found in the lower animals. This might be justly regarded as a fanciful idea if it were based upon a resemblance of the blood of pernicious anaemia to that of the lower animals—birds, fishes, reptiles—in any one particular; but I propose to show that the red corpuscles in this disease approach those of the lower animals in many, if not in all, of their chief characteristics ; namely, in their number, their size, their shape, and the amount of haemoglobin they carry." After giving some details concerning the blood corpuscles of the lower vertebrate ani- mals and their percentage of haemoglobin, I continued as follows: " Turning from these interesting facts of comparative physiology to their bearing upon the subject of this paper, we observe in well-marked cases of pernicious anaemia: 1. A reduction in the number of the red corpuscles to a degree that is normal in the 117 cold-blooded animals. It is not at all uncommon to find in this disease less than 1,000,000 corpus- cles per cubic millimetre. My lowest counts have been 525,000 five days before death; 560,000 in a case in which recovery took place ; and 315,000 a few hours before death. In the celebrated case of Quincke there were but 143,000 per cubic millimetre, and yet the patient recovered. Figures like these are, as has just been said, normal in the cold-blooded animals. 2. In pernicious anaemia the propor- tion of haemoglobin is often much greater than normal. It has been observed by Laache and others to be double the normal amount. This, in the opinion of the writer, is the most remark- able feature of this disease, distinguishing it from all other forms of anaemia, and is due to the fact that—3, many, sometimes the majority, of the corpuscles are greatly increased in size. This is well seen in the accompanying cuts, from photo-micrographs of diseased and normal blood, made for me by Mr. W. H. Walmsley, of this city. The photographs of the two speci- mens were made under precisely similar opti- cal conditions. The patient furnishing the diseased specimen of blood is a typical case of 119 pernicious anaemia, and is still under my obser- vation.* " By applying the points of apair of compasses to the enlarged corpuscles, it will be proved that many of them are at least double the normal size. 4. The corpuscles are not only increased in diameter, but altered in shape, and have a decided tendency to assume an oval outline. So much so that, in measuring them in the manner indicated, we have to take into con- sideration the direction in which the measure- ment is made. They have a long and a short diameter." The specimen from which the above cut was taken was not selected with the view of upholding this theory of reversion, but may be regarded as typical of the corpuscles of per- nicious anaemia. The enormous size of the cor- puscles (megalocytes) and their altered shape are still better shown in a cut in the work of Laache (Die Ancemie~), who had no theory of reversion to maintain. From the standpoint of the blood changes and of the clinical history, I contend that per- nicious anaemia is a condition that may result * He has since died. 120 from a number of causes. Prominent among these is atrophy of the stomach. In the Ameri- can Journal of Medical Sciences, April, 1886, I reported, in conjunction with Prof. Wm. Osier, a typical case of pernicious anaemia in which the only special lesion was atrophy of the mu- cous membrane of the stomach. " This was evident to the naked eye in the thin, cuticular appearance, and was abundantly confirmed by the microscopical examination, which showed that the peptic glands had been destroyed over the greater portion of the organ." About the same time I had under observation another case, a lady, whose symptoms and blood changes were identical with those of the above mentioned case. After an illness of more than a year she died, and at the autopsy, at which I was present, no lesion was found to explain the profound alteration of the blood. According to most authorities, the first of these cases in which a lesion was found, to which the symptoms might be reasonably attributed is, for that very reason, not a case of pernicious anaemia. The second case, on the other hand, is a case of pernicious, or " idiopathic," anaemia because a lesion, to which the symptoms might be attributed, was 121 not found. This appears to me to be a very unscientific mode of considering this subject. Little by little, causes have been discovered suffi- cient to account for all the symptoms of many cases of idiopathic anaemia. One of the latest contributions of this sort has been that of Dr. Gus- tav Reyher (Deulsches Archiv fur Klin. Med., Bd. xxxix), who reports thirteen cases of profound anaemia caused by an intestinal parasite, the bothriocephalus latus. In all their features, these cases deserve the name of pernicious, and had they been fewer in number and treated in a different manner, the anaemia might have been considered "idiopathic," the presence of a tapeworm in the intestine being regarded, in a country where this parasite is not uncommon, as a mere coincidence. The proof that the anaemia was secondary and parasitic was fur- nished by the fact that, in every instance, a wonderfully rapid recovery from an apparently hopeless condition followed the expulsion of the worm. From such facts as these it is reason- able to conclude that our ignorance concerning the cause of the most obscure forms of perni- cious anaemia, and our expression of that igno- rance by the term "idiopathic," will gradually disappear. 122 Having stated above that I do not regard pernicious anaemia as an independent disease, some explanation is needed of my reasons for classifying it under the head of primary anae- mias. I have none better than the one already given by me in the course of an article in the Medical News for July 3d, 1886:— " Opinions are divided as to whether per- nicious anaemia is due to the operation of a cause (unknown) sui generis, or to the pro- longed operation of the ordinary causes of anae- mia. The writer is of the opinion that the varied clinical history of the different cases on record furnishes most decided evidence in favor of the latter view. Anaemia, once established, tends to perpetuate itself in that species of vicious circle of which so many examples are furnished by pathology. Thus, to take an ex- treme example, the epileptiform convulsions which immediately precede death from hemor- rhage are due to cerebral ischaemia, and this very ischaemia is increased by the convulsions, for experiments have shown that the voluntary muscles contain a much greater amount of blood during contraction than while at rest. It is quite as essential to the blood-making organs 123 as it is to the nerve centres that they be properly supplied with blood, in order that they may act their important part toward maintaining the bodily health. Doubtless there are reserve powers and compensatory activities in each and all of the blood-making organs, which may suffice to furnish a fair quality of blood under the most adverse circumstances. These powers, however, have their limit, and, once exhausted, the anaemia, instead of continuing ' simple,' ' functional,' or ' symptomatic,' becomes' essen- tial,' ' organic,' or ' pernicious.' " In short, I consider some forms of pernicious anaemia to be due to malnutrition of the cyto- genetic organs. Symptoms.—In the words of Coupland, "the symptoms of pernicious anaemia are those of simple anaemia aggravated and intensified." In well-marked cases the appearance of the patient is, to a certain extent, diagnostic. The lips and palpebral conjunctiva are of a milky white color and the skin of a lemon tint. This hue of the skin is characteristic, and at once gives rise to the suspicion of pernicious anaemia to those who have seen one or more cases of the disease. It is unnecessary to enter at length 124 into the symptoms of this affection which are, for the most part, dependent upon want of oxygen. The chief of them are extreme muscu- lar prostration, breathlessness and syncope on slight exertion, or even in raising the head from the pillow; and digestive disturbances, such as anorexia, nausea and vomiting, and constipa- tion alternating with diarrhoea. Insomnia is more frequent thaji drowsiness until toward the end, when somnolence gradually deepens into lethargy and coma. Physical examination, in typical cases, reveals nothing but anaemic mur- murs over the heart, most distinct at the base and the bruit de diable in the veins of the neck. The pulse is usually rapid, from ioo to 120. The bones, particularly the sternum, are often tender on percussion. Retinal hemorrhages are found in the majority of cases. The blood is not only of the poorest quality, but is so small in quantity that often a drop is squeezed with great difficulty from a deep puncture in the finger pulp. It resembles serum more than blood, and is aptly compared to water in which beef has been washed. On examination with the microscope, the corpuscles present great diversities in size and shape. The majority are 125 often much larger than normal, and, compared with normal corpuscles, are worthy of the name of megalocytes. Others are much below the normal size, and are called microcytes; while others are greatly distorted, being pear-shaped for the most part, but sometimes biscuit-shaped, hammer-shaped, or anvil-shaped. These last are known as poikilocytes. The percentage of haemoglobin, owing to the increased size of the corpuscles, is often as great as, or greater than, normal, sometimes attaining twice the normal proportion. This abnormal proportion of hae- moglobin is not always due to the increased size of the corpuscles alone ; for, in some cases, the blood contains a large number of minute, highly-colored globules, which Eichhorst re- garded as pathognomonic. They are so minute as to look like " small, red-tinged, fat globules." These bodies are, of course, not counted in esti- mating the number of the red corpuscles, and yet their coloring matter contributes to the esti- mate of the percentage of haemoglobin. The corpuscles are, therefore, sometimes credited with more coloring matter than they possess. These minute colored bodies are not always present. I have met with them in but one case, 126 and Dr. Grainger Stewart was unable to find them in two well-marked and ultimately fatal cases which occurred in his practice. Fever of irregular type is certain to occur in late stages of pernicious anaemia. It has already been spoken of among the symptoms of anaemia in general. An increased excretion of nitrogen by the kidneys has been demonstrated in this affection by Strumpell, and is due to the inade- quate supply of oxygen to the tissues. This fact is of interest in connection with the exten- sive fatty degeneration, which is sometimes the only lesion detected in this disease. " The fat represents the non-nitrogenized remnants of the decomposed albuminoids." Anatomical Characters. — These are the changes in the blood itself and the consecutive lesions in other tissues. The former have been already described and figured in the course of this section Of the latter, the fatty degenera- tions of heart, intima of blood vessels, gastric tubules, etc., are mentioned under the head of anatomical characters of anaemia in general. In 1875, Prof. William Pepper suggested the marrow as the source of the blood lesions of pernicious anaemia, and " described definite 127 changes, chiefly of small, granular cells, in the marrow of the radius and sternum in one case." The marrow in this case, the. first in which a careful examination of this tissue was made, is described as "decidedly paler than in health." This is not the appearance of the hyperplasia of the marrow, which is regarded by some as the fundamental lesion of this affection. The marrow is of a reddish purple color; its consist- ence is increased; its fat cells have disap- peared, and the specific cellular elements of the medulla have increased in amount. Frequently, also, large numbers of nucleated red corpuscles are found. These changes, interesting and sug- gestive though they be, are by no means pecu- liar to pernicious anaemia and, when present, are not primary. They may be entirely absent, as in a thoroughly studied case reported by Dr. J. H. Musser, of Philadelphia. They may also be present in other diseases. They were found by Litten in four cases of uterine carcinoma, and by Orth in a case of carcinoma recti, and in another of carcinoma mammae. (Berlin Klin. Wochensch., xiv, 748.) Diagnosis.—In accordance with the views here presented, an anaemia has entered upon 128 the pernicious stage when the blood corpuscles are greatly diminished in number — below 2,000,000 per cubic millimetre—and have under- gone the alterations in size and shape already described and figured. In addition, the per- centage of haemoglobin may be normal or above normal; certainly but little below it in any case. A blood containing megalocytes, poikilocytes and microcytes, is the blood of pernicious anaemia. This condition may be secondary, i. e., the cause is known ; or primary, i. e., the cause is, as yet, unknown. Prognosis.—The prognosis of pernicious anae- mia is unfavorable, but there are brilliant excep- tions to this rufe ; for example, those furnished by Reyher's cases. These were, doubtless, from an etiological standpoint, cases of parasitic anaemia, but clinically they presented every feature of pernicious anaemia. In general terms, when the cause is known and removable, the prognosis is good; when known and not re- movable, it is hopeless; when unknown, it is doubtful. Treatment.—Confining what is to be said about treatment to those cases in which the cause is unknown, the best results have been 129 attained by the use of arsenic, iron, and quinine. Numerous undoubted cures have followed the use of the first of these drugs, which may be given in pill or in Fowler's solution. Trans- fusion has been attended with little or no suc- cess, but Dr. Oscar Silbermann reports two cases of profound anaemia which recovered after subcutaneous injections of defibrinated blood. The blood was injected under strict antiseptic precautions, and the quantity of each dose varied from twenty to forty grammes. In- halations of oxygen and the subcutaneous in- jection of quinine are recommended by Dr. Henrot of Rheims. Of equal importance with drugs, is a nutritious diet, of which the digestion may be assisted by malt and pancreatic extract or the food may be peptonized before its inges- tion. SECONDARY ANAEMIA. As already remarked on a previous page, " Nearly every morbid process, when it occurs in a severe form, is sooner or later followed by anaemia." It is therefore impossible, within the limits of this work, to consider every form of secondary anaemia. It is also unnecessary, for I 130 the differences between the various forms are those of degree, not of kind. The anaemias of fever and hemorrhage have already been considered. That of syphilis has been studied by Wilbouchewitch; by Keyes, of New York, and by Laache, of Christiania, and it has been demonstrated that the improvement which follows the administration of mercurials is accompanied with an increase in the number and value of the red corpuscles. In the ad- vanced stages of phthisis, cancer, Bright's dis- ease, and cirrhosis of the liver, the blood corpuscles are greatly reduced in number—be- tween 2,000,000 and 3,000,000—and may assume the characters—increased size and altered shape —of pernicious anaemia. TOXAN.EMIA. A poison may produce anaemia either directly or indirectly. The ingestion of arsenic and phosphorus, and the inhalation of arseniureted hydrogen are directly followed by the destruc- tion of red corpuscles in such quantities that haemoglobin appears in the urine, and even jaundice (haematogenousl may ensue. In certain susceptible individuals the same symp- 131 toms are caused by prolonged exposure to cold. Other substances, such as potassium chlorate and certain edible fungi, morchella and helvella, esculenta, produce the same effects. For details concerning these and other agents destructive to the red corpuscles, the reader is referred to my article on " Haemoglobinuria," in " Wood's Reference Handbook of Medicine." The action of lead upon the blood corpuscles is probably altogether indirect, through the marked disturb- ances of digestion to which it gives rise. A decided degree of anaemia in a case of chronic lead poisoning should lead to a careful examina- tion of the urine; for, as is well known, the long- continued ingestion of lead is one of the causes of cirrhotic kidney. The anaemia, if such it can be called, pro- duced by carbonic oxide poisoning, differs from all other forms of toxanaemia. This gas, when inhaled, "displaces the oxygen of the blood- coloring matter, and takes its place, molecule for molecule. The combination thus formed is re- markable for its stability, although, contrary to what was formerly supposed, it can be displaced by an indifferent gas or in a vacuum. Its crys- tals are isomorphous with those of oxy-haemo- 132 globin, but have a slight bluish tinge. Its spectrum is almost identical with that of O-hae- moglobin, but the two absorption bands are moved very slightly nearer the violet end."* The effect of this gas is to paralyze the red cor- puscles which, until it is displaced, are incapable of performing their functions. The symptoms of this form of toxanaemia are coma, with ster- torous respiration, pallor and coolness of the skin, while the mucous membranes are bright red; rigidity of muscles, dilated pupils and usually a slow, easily-compressible pulse. The symptoms are, however, not uniform ; for cases are reported in which there was no stertor, the pulse was small and quick and the pupils con- tracted. Convalesence is apt to be very slow. In a case reported by Dr. John Graham in the " Transactions of the College of Physicians of Philadelphia," series iii, vol. viii, the patient, a woman, aet. 74, was not able to sit up until seventy-three days after the accident. PARASITIC AN.EMIA. The parasites which have been thus far recog- * Article on Blood, in " Wood's Reference Handbook," by F. P. Henry. 133 nized as causative of anaemia are the anchy- lostomum duodenale, the bilharzia haematobia, the filaria sanguinis, the bothriocephalus latus, and perhaps, also, the plasmodium malariae. The anchylostomum duodenale was first recognized by Griesinger, in 1854, as the cause of a profound endemic anaemia, known as Egyptian chlorosis. Since then it has attacked the Italian laborers employed in the construction of the St. Gothard tunnel, and has also prevailed among brickmakers in Germany. The bilharzia, first discovered by Bilharz in Egypt, in 1851, gives rise to anaemia by the haematuria caused by its presence in the body. The adult animals lie in dilated blood vessels in the neighborhood of the bladder or other urinary outlet, and the symptoms are due to the interference with the circulation and the irritation caused by the ova on their way to the urinary passages. The filaria sanguinis causes anaemia by interfering with the lymphatic circulation. The obstruction to the lymph vessels may be so great as to lead to their rupture, in which event the lymph escapes from the body, usually with the urine (chyluria); sometimes, however, directly from the integument, as in cases of lymph-scrotum. 131 This parasite is quite common in certain tropical and subtropical countries, especially in China, and has recently acquired a new interest from the discovery, by Dr. John Guiteras, of Charleston, S. C, that it is indigenous to the United States.* The plasmodium malariae is the haematozoon discovered by Laveran in Algiers. It exists within the red corpuscles and free in the blood, and is probably operative in the causation of malarial anaemia. This organism has been studied by several careful observers; in this country particularly by Councilman,! of Balti- more, and Osler.J of Philadelphia, although, to quote the latter, " Laveran's original descrip- tion is well nigh complete, and subsequent workers have done little else than confirm his results, though to Marchiafava and Celli is due the credit of insisting upon the amoeboid char- acter of the intra-cellular form." * Medical News, April ioth, 1886. f" Transactions of the Association of American Physi- cians," vol. i. t British Medical Journal, March 12th, 1887. INDEX. PAGES Anaematosis.....................34, 69 Anaemia, predispositions to,.............16, 17 senile,....................... 18 congenital,.................... 18 from hemorrhage,................ 22 latent,....................... 25 lightest grade of,.................. 31 highest grades of.................. 33 classification of,.................. 46 lymphatica, synonyms of,............. 59 infective nature of,............... 65 nature of,................... 69 symptoms of,................ 70 diagnosis of................... 72 prognosis of................... 73 treatment of,................. 74 splenica,.....................102 anatomical characters of,............103 clinical history of,...............106 nature of,...................icg course and prognosis of,.......•. . . . . 111 diagnosis of...................112 treatment of,................•. 113 Blood-plates,..................... 6 Chlorosis,...................... 47 confused ideas concerning,............. 51 diagnosis of..................... 54 prognosis of,.................... 57 treatment of,.................... 58 Compte-globules of Malassez, ............. 11 Corpuscles, red,....................1,2 white,....................... 4 Fibroadenia,......................104 Globinometer,..................... 14 135 136 TAGHS Hemacytometer..................n, la Hxmatoblasts,.................... 6 Hacmic unit...................... 54 Haemoglobin,..................... 2 Haycm's formula for intra-venous injection,....... 42 Hematimclrc,..................... 11 Lcucocrystallin,.................... 85 Lcncocyth.cinia,.................... 75 nomenclature of,.................. 75 anatomical characters of,.............. 76 retinal changes in,................. 81 blood changes in.................. 82 clinical history of,.......... ..... 85 pathogenesis of,.................. 88 lymphatic, a " myth,"............... 92 xtiology of,.................... 94 dl-'-""MS of-.................... 95 prognosis of,.................... 98 treatment of,.................... 99 Leucocytosis,..................... ?6 beukosin........................ g4 Microcytes,...................... 7 Parasitic anaemia....................132 Pernicious araemia,..................II. nature of,...................nc symptoms of..................l2-, anatomical characters of,............126 diagnosis of,..................,27 prognosis of,.....;............I28 treatment of,................ 12g Poikilocytosis,................. ,. 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