3&~ ON THE THEORY AND PRACTICE OF MIDWIFEKY. -' BY FLEETWOOD £JIURCHILL, M. D., M. R. I. A., FELLOW OF, AND PROFESSOR OF MIDWIFERY AND DISEASES OF WOMEN AND CHILDREN IN, THE KING AND QUEEN'S COLLEGE OF PHYSICIANS IN IRELAND; EXAMINER IN MIDWIFERY IN THE QUEEN'S UNIVERSITY IN IRELAND; ONE OF THE PRESIDENTS OF THE OBSTETRICAL SOCIETY; ASSOCIATE MEMBER OF THE COLLEGE OF PHYSICIANS, PHILADELPHIA, U. S., ETC. ETC. WITH ADDITIONS BY D. FRANCIS CONDIE, M.D., FELLOW OF THE COLLEGE OF PHYSICIANS OF PHILADELPHIA; AUTHOR OF " A PRACTICAL TREATISE ON THE DISEASES OF CHILDREN," ETC. ETC. WITH ONE HUNDRED AND NINETY-FOUR ILLUSTRATIONS. A NEW AMERICAN, FROM THE FOURTH CORRECTED AND ENLARGED ENGLISH EDITION. PHILADELPHIA: BLANC HARD AND LEA. 1860. Cbiol&n, 8G0 53 5 1 Entered, according to Act of Congress, in the year I860, by BLANCHARD AND LEA, in the Clerk's Office cf the District Court of the United States for the Eastern District of Pennsylvania. \ CHARLES JOHNSON, Esq., M. D.; THIS VOLUME ASA TOKEN OF RESPECT FOR HIS HIGH PROFESSIONAL ATTAINMENTS, AND OF GRATITUDE EOR HIS PERSONAL KINDNESS. "Thine is a high and holy office; see that thou exercise it purely; not for thine own advancement, not for thine own honour, but for the glory of God and the good of thy neighbour. Hereafter thou wilt have to give an account of it."—Hufeland. EDITOR'S PREFACE. The scope, arrangement, and general character of the Treatise of Dr. Churchill, are confessedly such as to adapt it, in an eminent degree, for the use of both the student and practitioner of midwifery. Each successive edition has been carefully revised by the author, and made to embrace every improvement that had been developed in respect to the theory and practice of obstetrics subsequent to the appearance of its predecessor, rendering, thus, the latest edition of the work, just issued in Dublin, and of which the present is a faithful reprint, a full, clear, and accurate exponent of the existing state of every department of Mid- wifery, whether considered as a Science or an Art. The American Editor, in presuming to add anything to a treatise so complete and excellent as that of Dr. Churchill, may, perhaps, be con- sidered as having performed an uncalled for labor. He, nevertheless, believes that the additions he has made will not be condemned as superfluous, but will be found, on the contrary, adapted to augment, in some degree, the value of the work. A number of illustrations, in addition to those of the author, have been inserted where it was believed they would aid the reader in obtain- ing a clearer conception of the descriptions and practical directions of the text. All these additions are indicated by enclosure in brackets [ ]. There has been appended, also, with the approbation of Dr. Churchill, an extract from his " Manual for Midwives and Monthly Nurses." In this extract the exposition of the duties and the directions for the conduct (v) V'i EXTRACT FROM THE AUTHOR'S PREFACE. of the nurse, before, during, and subsequent to labor, are presented more in detail than in the body of the Treatise. These additions, together with the fact that the work has had the benefit of two revisions by the author since the publication of the last American edition, have caused a notable augmentation in the size of the volume, which at present contains fully one-half more matter than when last reprinted. This has rendered necessary the adoption of a smaller type, notwithstanding which the number of pages has been increased by nearly two hundred. Philadelphia, August, 1860. EXTRACT FROM THE AUTHOR'S PREFACE TO A FORMER AMERICAN EDITION. " I owe a large debt of gratitude to my kind American friends, which I gladly take this opportunity of acknowledging, and also to the profes- sion in America for the flattering reception they have given to my volumes. No reward could be more highly valued by me, nor could anything make me more anxious, by labor and study, to make my works as perfect as possible, than the knowledge that their usefulness may extend to another hemisphere." PREFACE TO THE THIRD EDITION. The demand for a new Edition of this work affords me an opportunity of expressing my gratitude to the Profession for their kind reception of the former ones, and of endeavoring to make the present still more worthy of their acceptance. I have more than once carefully examined every paragraph, and have corrected or modified every expression not in accordance with the knowledge acquired by a more lengthened experience. I have not hesitated to acknowledge a change of opinion, when such appeared more in accordance with truth, nor have I felt that a doubtful expression is unwise when our information is insufficient to justify positive conclusions. It has been well observed by an eminent writer, that " He who does not in all cases prefer doubt to the reception of falsehood, or to the admission of any conclusion on insufficient evidence, is no lover of truth, nor in the right way to attain it on any point." Some portions of the work have been entirely re-written, several new sections added, and one new chapter; by which means, I hope, the practical value of the work has been increased. I trust also the refer- ences to modern authorities, which I have annexed to this Edition, will be found useful. The publishers have liberally augmented the number of wood-cuts, so as to render the illustrations more complete. The Statistical Tables have been much enlarged in this Edition: so that, as the conclusions are based upon much larger numbers, we may regard them as a nearer approximation to the truth. No doubt, as I formerly observed, an absolute and unguarded reliance upon numerical (Yii) viii PREFACE TO THE THIRD EDITION. calculations may lead us into error; for in grouping together a number of cases to ascertain their positive or relative frequency, their causes, the ratio of mortality positive and comparative, etc., it is next to impos- sible to obtain exactly similar cases, or patients under exactly similar circumstances; for this we have to make allowance, and also for differ- ences in habits of life, constitution, or atmospheric influences, modes of previous treatment, etc., so that we shall find abundant reason to use our statistical deductions with caution and allowance; in fact, we can- not possibly ascertain the exact truth, but only a more or less close approximation to it. But even thus far these calculations are of great value, for, 1. They lead to a habit of definite thought and statement; so that instead of general terms, we use numbers or proportion, and in so far as accuracy is attained, we give a fixed and scientific character to our observations. 2. As Dr. Simpson, in his excellent essay on the value and necessity of statistics in operative surgery, has remarked, " Statistics offer a test by which the impressions of our recorded and limited experience are corrected ; and they furnish a mode of investigation capable of resolving many existing practical problems in surgery." 3. They afford us in general the only true and ultimate "measure of value" of any proposed alternative operation, or of any new practice in surgery or midwifery. For these and other reasons I still hold the opinion that numerical calculations, applied to midwifery, are of great value, notwithstanding the numerous chances of error, and the impossibility of drawing conclu- sions from them with absolute accuracy. In preparing this Edition I have been indebted to numerous friends for the correction of errors, for permission to make free use of their writings, to copy their plates, or to give wood-cuts of their instruments and casts. Among these I cannot but mention Dr. Shekleton and Dr. M'Clintock of Dublin, Dr. Simpson and Dr. Zeigler of Edinburgh, Dr. Dyce and Dr. Christie of Aberdeen, Dr. Oldham of London, etc., to whom, as well as to other friendly assistants, I beg leave to return my best thanks. 137, Stephen's Green, Dublin. PREFACE TO THE FOURTH EDITION. I trust the reader will see proofs that this Edition has undergone a careful revision. I have added what I found wanting, pruned what appeared redundant, and corrected what was vaguely or carelessly ex- pressed. I earnestly hope that it has been rendered less imperfect and more useful. Since the last Edition, a controversy has been in some degree forced upon me, on the operation of craniotomy, but, unlike most controversies, I do believe it has had no evil effects — has left no ill-feeling after it. Nay, I am free to confess that it has done me good, for, by obliging me to sift the question thoroughly, it has enabled me to define more precisely the grounds of the operation, and to restrict its limits in a more definite manner; and of this the students of this volume will, I think, have the benefit. As the subject has not been so fully ventilated in any English work, I have thought it advisable to append the essay I published on the question. I allude with regret to another controversy both unpleasant and un- profitable. Dr. Francis Ramsbotham has accused me of copying many of his plates without acknowledgment, implying that I put them forth as my own. Such a thought never entered into my head. I copied from previous authors as they had done from their predecessors, men- tioning in my preface to the First Edition that I had so availed myself of their labors. I regret that I did not. specify with each wood-cut whence it was taken. I must now be satisfied with apologizing to Dr. Ramsbotham and all others who think that I have done them injustice, assuring them that nothing could be further from my intention than to claim a merit not justly my due. I am too old to wish for quarrels, and too busy to have time for controversy, so that I trust that what I have said will be sufficient to prevent future misunderstanding. 15, Stephen's Green, April, 18G0. CONTENTS. PAGE Preliminary Observations..........33 PART I. ANATOMY OF THE PELVIS AND ORGANS OF GENERATION. CHAP. 1. Of the bones of the pelvis .......... 35 2. Of the joints of the pelvis .......... 39 3. Of the pelvis collectively .......... 41 4. Deformities of the pelvis .......... 49 5. Of the external organs of generation ........ 60 6. Of the internal organs of generation........66 PART II. OF THE PHYSIOLOGY OF THE ORGANS OF GENERATION. 1. Menstruation ............ 77 2. Disorders of menstruation .......... 91 3. Generation — Conception..........102 4. Utero-gestation ........•••• HI 5. Signs of Pregnancy.......... . 155 6. Duration of pregnancy...........167 7. Sterility.............I"1 8. Spurious pregnancy...........174 9. Super-foetation............177 10. Extra-uterine pregnancy..........180 11. Pathology of the foetus...........187 12. Abortion.............190 PART III. PHYSIOLOGY OF THE UTERUS — PARTURITION. 1. Classification—Definitions..........199 2. Mechanism of parturition..........203 3. Natural labor.............222 4. Convalescence after natural labor.........247 5. Tedious labor.......;.....257 (xi) xii CONTENTS. CHAP. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 29. 30. Powerless labor Obstructed labor Deformed pelvis Obstetric operations — 1. Induction Version, or turning The vectis, or lever The forceps Craniotomy The Caesarian section Symphyseotomy Mal-position and mal-presentation of the Plural births—Monsters . Prolapse of the funis umbilicalis Retention of the placenta Flooding Convulsions Lacerations Inversion of the uterus Sudden death Puerperal fever Phlegmasia dolens . Puerperal mania Ephemeral fever or weid Sore nipples . Inflammation and abscess of the breast of premature labor child APPENDIX. Obstetric Morality..... Qualifications and duties of Monthly Nurses . 613 629 LIST OF WOOD ENGRAVINGS. FIG. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. Os Innominatum, inner surface " outer surface Os Sacrum Concavity of Sacrum . Skeleton of trunk Pelvis — front view . " brim . " cavity . " lower outlet. •' canal of " equable excess of " " diminution of '• distortion of brim . cavity exostosis lower outlet " oblique distortion Calliper for measuring pelvis (Baudelocque Measurement of pelvis by the fingers tt a << External organs of generation . Anatomy of external organs of generation Section of pelvis Uterus, tubes and ovaries . " cavity of " double .... " bicollis .... " double .... u << ... Section of ovary, Graafian vesicles. Ovum of rabbit .... " of man .... Ovary at menstrual period . (xiii) XIV LIST OF WOOD ENGRAVINGS. no. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. 77 78. 79. 80. 81. 82. 83. 84. 85. 86. 87. 88. Deformed pelvis 89. 90. 91. 92. 93. 94. 95. 96. 97. Spermatozoa .... Graafian vesicle after impregnation Ovary after escape of ovum Corpus luteum .... " " from Montgomery Vessels of gravid uterus . Nerves of gravid uterus . Cervix uteri at 3d month of gestation " at 6th month. " at 8th month " at 9th month Decidua vera . Decidual cotyledons . Decidua reflexa, formation of around ovum Human ovum of two weeks " '• laid open Placenta and cord . " section of . Human ovum at an early period " about 3 weeks " 2 months a t< " 3 months Section of a hen's egg Vitelline membrane, Blastoderma — T. W. Jones Changes in the ben's egg during incubati Vesicula umbilicalis, from Baer Diagram of foetus and membranes about the 4th week, from Carus " " " " 6th week Position of foetus in utero Foetal head diameters Mode of examination by ballottement Tubal foetation .... Dewees' wire crotchet Bond's placental forceps . External layer of uterine muscular fibres Internal " " " " Planes of the pelvis Outlet of the pelvis . Foetal head, diameters Mechanism of parturition — 1st position Vertex presentation — 1 st position . " " " first step in mechanism of labor Outlet of pelvis with foetal head passing through in the 1st position First position of vertex, third step in mechanism of labor Mechanism of parturition — 2d position ..... Outlet of pelvis — foetal head passing through in the 2d position LIST OF WOOD ENGRAVINGS. XV na, 99. 100. 101. 102. 103. 104. 105. 106. 107. 108. 109. 110. 111. 112. 113. 114. 115. 116. 117. 118. 119. 120. 121. 122. 123. 124. 125. 126. 127. 128. 129. 130. 131. 132. 133. 134. 135. 136. 137. 138. 139. 140. 141. 142. 143. 144. 145. 146. 147. 148. 149. 150. 151. 152. 153. 154. Mechanism of parturition — 3d position Outlet of pelvis — foetal head in the 3d position Mechanism of parturition — 4th position Outlet of the pelvis and foetal head in the 4th position Head at lower outlet in the 4th position Head at the lower outlet Vaginal examination Extraction of placenta . Obstructed labor — polypus uteri " " ovarian tumor " '• vaginal cystocele Version or turning . Roonhuysen's vectis Modern vectis. Application of vectis Chamberlen's forceps Short forceps . Long forceps . Dr. Radford's forceps Churchill's forceps . Operation with long forceps " short forceps Axes of pelvis Dr. Huston's forceps Dr. Hodge's forceps Dr. Bond's forceps . Hayn's perforator . Smellie's perforator Crotchet Churchill's crotchet Mr. Holmes's perforator Knife for amputating limbs Blunt hook Dr. Davis's bone forceps . Oldham's instrument Craniotomy forceps Dr. Meigs's Embryulcia instruments Craniotomy forceps .< " The cephalotribe Use of the perforator a a Application of the Crotchet a a Perforator for cranioclasm The cranioclast Sketch of the head of a child delivered by cranioclasm, showing form and amount of diminution caused by the operation . the change of 381 382 XVI LIST OF WOOD ENGRAVINGS. FIG. 155. 156. 157. 158. 159. 160. 161. 162. 163. 104. 1G5. 166. 167. 168. 169. 170. 171. 172. 173. 174. 175. 176. 177. 178. 179. 180. 181. 182. 183. 184. 185. 186. 187. 188. 189. 190. 191. 192. 193. 194. Face presentations .... Face presentation— 1st position Passage of the head through the external par Face presentation — 2d position Forehead under the arch of the pubis Breech presentation— 1st position . " " 2d position . " " extraction of head Presentation of inferior extremities Arm presentation- • 1st position 2d position s in face presentation Compound presentation — hand, foot, and funis Hydrocephalus Prolapse of the funis Hour-glass contraction of the womb Removal of adherent placenta Placenta proevia Duck-billed speculum The manner in which Sims adjusts and fixes the silver sutures Bozeman's button as it is being passed along the threads down to the wound Bozeman's button-suture finally applied ... .... Bozeman's suture adjusted ......... Tubular needle for passing wire threads through the lips of vesico-vaginal fistula Fork or pulley used in drawing through the wire threads Blunt hook for directing the point of the needle .... The iron wire splint of Simpson finally adjusted .... Dr. Coghill's instrument for finally tightening and fixing the wires . The iron-wire splint finally adjusted and the ends of the stitches twisted and secured across the lower bar of the splint The tenaculum, or sharp hook used for catching up the edge of the mucous membrane of the vagina around the fistula ..... Straight knife used for paring the edges of the fistula .... Bent knife used for paring the edges of the fistula ..... Lateral view of the bent knife to show the angle at which the blade is bent Laceration of perineum, Dr. Horner's operation ..... ON THE THEORY AND PRACTICE 0 F MIDWIFERY. PRELIMINARY OBSERVATIONS. 1. The theory and practice of Midwifery embraces the anatomy and physiology of the organs of generation, and also the anatomy of the region in which they are contained. A correct knowledge of the structure, magnitude, and other peculiarities of the pelvic cavity, is indispensable to a due appreciation of the mechanism of parturition : the anatomy of the organs of generation must of course be preliminary to an investigation into their functions, and it is only by a minute and accurate observation of these functions that we are able to detect and comprehend the deviations from their course; in other words, their pathology. The four great functions of the uterine system are menstruation, concep- tion, gestation, and parturition, which are so intimately connected, that each is dependent on the other; and for the development of either, the co-opera- tion of several organs is necessary. A breach of this union, or the absence of this co-operation, will involve functional irregularity or inefficiency; and together with the deviations of individual organs from the normal standard, and certain organic deficiencies, will constitute the pathology of the female generative system. 2. We have thus, in a few words, a natural arrangement of subjects laid down, which I shall follow in the subsequent parts of this volume. Part I. will include the normal and abnormal anatomy of the pelvis, and of the external and internal organs of generation. 3 (33) 34 PRELIMINARY OBSERVATIONS. Part II, the function of menstruation, with its abnormal conditions : and of conception, utero-gestation, ovology, etc., with their abnormal deviations, as sterility, superfcetation, extra-uterine gestation, foetal pathology, abor- tion, etc. Part III., Midwifery properly so called, that is, parturition, with its abnormal varieties. This arrangement will bring under our notice all that relates to the theory and practice of midwifery. In addition to the description of the various functions mentioned above, there will be given full details for their manage- ment, and for the treatment of their deviations; all of which I shall endea- vor to state as clearly and concisely as possible. PART I. THE ANATOMY OF THE PELVIS AND OF THE ORGANS OF GENERATION. CHAPTER I. OF THE BONES OF THE PELVIS. 1. The pelvis is an irregular bony cavity, situated at the base of the spinal column, and above the inferior extremities, with which it is connected by articulations and muscles, and for which, as well as for the muscles of the trunk, it constitutes a "point d'appui." As it forms one of the two mechanical elements of parturition, it is of great consequence to understand rightly its component parts, their connec- tions, relations, coverings, and abnormal varieties. These we shall therefore proceed to investigate at once. 2. In the adult, the pelvis may be divided into four-parts or bones, viz., two, ossa innoviinata, the os sacrum, and the os coccygis; but in early life they are more minutely divisible. Let us now examine these bones separately. Fig. 1. Os Innominatum, inner surface. 3. Each Os Innominatum (Fig. 1), at an early period of intra-uterine life, consists of cartilage onlv, in which, subsequently, numerous spiculae of ossifi- ' (35) V 36 BONES OF THE PELVIS. cation are seen, and which at birth have coalesced so as to form three bones, separated by cartilage. After birth, the process of ossification continues until these separate bones meet in the acetabulum, where they are identified with each other, and at the symphysis pubis, where the opposite ossa pubis are united by cartilage and ligaments. The breadth of each os innominatum, from the anterior-superior to the posterior-superior spinous process, is six inches, and the height from the tuber ischii to the highest part of the crest of the ilium is seven inches. The three bones into which each os innominatum is divided at birth have received different names, and require a distinct notice. 4. The Os Ilium, hip, or haunch bone (Fig. 2), is the larger of the three, of a triangular shape, situated superiorly, and with its fellow forming what is called the false pelvis. Its external surface (*), or dorsum, is convex, irregular, with elevations and depressions which serve for the attachment of the glutsei muscles. Its internal surface, or venter (10), is concave and smooth, affording a bed for the iliacus internus muscle. The lower portion, body or base (5), is the thickest part of the bone, and forms more than one-third of the acetabulum. Above the body, the bone spreads out into its ala or wing, which rises ob- liquely forwards, upwards, outwards, and then backwards, terminating in the crest or crista ilii—a semicircular ridge of some thickness, which, at its posterior part, curves downwards and forwards. Its borders serve for the attachment of the abdominal muscles, and certain ligaments to be hereafter described ; and it terminates anteriorly, in the anterior-superior, and ante- rior-inferior spinous processes (4,5). The former afford attachment to Pou- part's ligament, the tensor vaginae femoris, the sartorius, and a portion of the rectus femoris muscles. Between the posterior spinous processes is a deep arch, — the sciatic notch, — which is divided by ligaments into the two sciatic foramina: through the upper of these, which is the larger, pass the gluteal, sciatic, and pudic arteries, the sciatic and pudic nerves, and the pyri- form muscle ; whilst, through the inferior opening, the pudic arteries and nerve re-enter the pelvis, and the obturator internus muscle passes out. The posterior part of the crest of the ilium terminates in an irregularly oval rough surface, with numerous prominences, which occupy corresponding depressions in the sacrum, and constitute (with a thin layer of cartilage interposed) the sacro iliac synchondrosis of each side. The body of the bone is divided from the ala internally by a well-marked ridge (12), running from the junction of the ilium, with the sacrum, forward ; this is part of the linea ilio-pectinea, and defines the boundary of the true pelvis. Thus we find that the ilium is connected posteriorly with the sacrum, and identified anteriorly with the ischium and pubis in the acetabulum. 5. The Os Ischium, os sedentarium, etc., is the lower of the three bones composing the os innominatum, and the next in size to the os ilium. Its base or body (2), which forms the inferior portion of the acetabulum, is the thickest part; below this we find a narrower portion, from which a spinous process juts out backwards and inwards, and affords insertion to part of the sacro-sciatic ligament. This process varies in length and direction, and is occasionally of some importance obstetrically. From the neck, the bone descends downwards and forwards, until, enlarging at its lower portion, it forms the tuber ischii (u), the bony seat, a rough, thick protuberance ; and turning upwards, at an obtuse angle, becomes the ascending ramus (15) of the ischium. Its internal surface is smooth and even, and forms one of the inclined planes of the pelvic cavity. Its external surface is rough, and gives attachment to the sacro-sciatic ligament, to the semi-membranosus, semi-tendinosus, the long head of the biceps flexor cruris, and the quadratus femoris muscles. BONES OF THE PELVIS. 3 7 Thus the ischium is identified with the ilium and pubis in the acetabulum, with the descending ramus of the pubis, and is connected by ligament with the sacrum. 6. The Os Pubis, pecten or share-bone, is the smaller and most anterior of the three bones. Its base is the thickest part, and forms the anterior and smaller third of the acetabulum, beyond which the bone narrows ; and, proceeding forwards, constitutes the horizontal ramus (16) of the pubis ; somewhat triangular in shape, and about half an inch in breadth. It meets Fig. 2. 0s Innominatum, outer surface. its opposite at the symphysis pubis ("), and completes the anterior wall of the pelvis. From the inferior part of the symphysis, and at an acute angle with the horizontal ramus, a thin plate of bone, the descending ramus (*8), proceeds downwards to meet the ascending ramus of the ischium, and with it to form one side of the arch of the pubis. Upon the angle formed by these bones and their opposites will depend the dimensions of the arch, and the facility or difficulty of the transit of the child through the lower outlet. The inner and superior edge of the horizontal ramus is a continuation of the linea ilio-pectinea, which it completes ; and near its pubic termination is a small spinous process, to which is attached the inner end of Poupart's ligament, and near it the pectineus muscle, whilst the inner and outer edges of this portion of the bone afford insertions to the abdominal muscles. Although I have stated that the anterior part of the bony pelvis is completed by the osa pubis and ischium, yet in the centre of each side a considerable space is left, called the obturator foramen (*>), which is nearly closed by the obturator ligament. The object attained by this arrangement is lightness of structure where strength is not needed. The shape of these foramina is stated by Meckel, Cruvelhier, Cloquet, etc., to be oval in the male and tri- angular in the female. Other and opposite statements have been made, but from the observations of Dr. John Neill1 there can be little doubt that the former opinion is the correct one, and this affords an additional distinction between the male and female skeleton. The os pubis is identified with the i Summary of Trans, of Coll. of Pliys. Philadelphia, vol. iii. No. 2. Amer. Med. Jour., Oct 1850, p. 558. 38 BONES OF THE TELVIS. ilium and ischium in the acetabulum, with the ascending ramus of the ischium, and is connected with its fellow opposite by cartilage at the sym- physis pubis. Of the three bones, the ilium forms a part of the brim and cavity of the pelvis, but none of the outlet; the ischium, part of the outlet and cavity, but none of the brim ; whilst the ossa pubis enter into the formation of both brim and outlet. 1. The Os Sacrum, os basilare, etc., (Fig. 3^ terminates the vertebral column, and may be said to consist of several vertebra? anchylosed. Its forma- tion commences by about thirty-five points of ossification, these shortly coalesce into fifteen ; at birth the number is reduced to five (the number of ver- tebrae of which the bone consists), and subsequently they form but one bone. In the adult it is of a triangular shape, the base of the triangle being above, and inclining forwards; the apex below, and somewhat backwards. Its length is from four to four and a half inches, its breadth four inches, and its greatest thickness two and a half inches. M. Baudelocque found that the thickness of this bone scarcely varies a line, even in deformed pelves. Its specific gravity is small, owing to its spongy texture, so that for its size it is pro- bably the lightest bone in the body. Its external surface is rough and convex, exhibiting four or five spinous processes like those of the vertebra?, but smaller, and diminishing in size as they descend. Anterior to these we find a continuation of the spinal canal, containing the cauda equina; with four holes on each side communicating with it, for the transmission of nerves. Its internal surface (2) is smooth, and concave to the amount of half an inch,1 crossed by four transverse lines, marking the former division of its Fig. 3. [Fig. 4.] Os Sacrum. bones by cartilage; here are also four pairs of holes sloping outwards, through which pass nervous filaments, which afterwards form part of the great sciatic nerve. The upper edge of this bone completes the brim of the pelvis; the oval shape of which, however, is broken by the projection of the central portion,—the promontory of the sacrum (x). The lateral surfaces (3) are rough, uneven, and covered with a thin layer of cartilage; the irregu- 1 ["The inner face of the sacrum is more or less concave in different subjects. When the conformation is natural, its concavity, according to M. Dubois, may be estimated at about TVhs of an inch (fig. 4).] OF THE JOINTS OF THE PELVIS. 39 larities correspond to similar ones in the ilium, and with them form the sacro-iliac synchondroses. This is probably the most important bone in the pelvis, obstetrically considered, inasmuch as it forms a great portion of the brim and cavity, and enters largely into the various deformities of the pelvis. It is connected superiorly with the last lumbar vertebra, laterally with the ossa ilia, inferiorly with the os coccygis, and by ligaments with the ossa ischia. 8. The Os Coccygis, or huckle-bone (4), is the continuation and termina- tion of the os sacrum and vertebral column. It is formed by four or five points of ossification in the foetus, which do not afterwards unite, but are tipped with cartilage, and movable by a ginglymoid joint. The entire bones form a pyramid, the apex of which is below. The external surface is irre- gular, and the internal smooth, terminating the plane of the sacrum, and extending it anteriorly. The small sciatic ligament and the ischio-coccygeal muscle are inserted into it. To the accoucheur this apparently insignificant bone, or bones, is of im- portance, as any deviation from its normal direction, or usual mobility, may influence the progress of parturition. CHAPTER II. OF THE JOINTS OF THE PELVIS. 9. Before proceeding to the consideration of the pelvis collectively, let us briefly examine the joints by which the separate bones are connected, and especially as deficient information on this subject has heretofore led to erro- neous practical conclusions. I shall notice, l,the sacro-iliac synchondroses; 2, the symphysis pubis ; and, 3, the sacro-coccygeal joint. 10. The Sacro-iliac Synchondrosis, of either side, consists of a rough irregular surface on the posterior part of the ilium and the side of the sacrum, each of which is covered with a layer of cartilage from one-sixth to one-eighth of an inch in thickness; the sacral layer being the thicker, and the entire, when the bones are forcibly separated, adhering to the sacrum. At the point of junction of these two layers, their substance is somewhat softer, which has led to the erroneous supposition that it is a joint properly so called. This union of the bones is strengthened by strong ligamentous bands, which by some writers are described as the superior, inferior, ante- rior, and posterior sacro-iliac ligaments. They stretch across from one bone to the other in front and behind, rendering the joint perfectly immo- vable, unless great force be used. Additional strength also is obtained by the sacro-sciatic ligaments connecting the lower part of the sacrum with the ilium. . 11. The mode in which the sacrum is inserted between the ossa ilia is worthy of notice ; it resembles the position of the keystone of an arch in- verted—i. e., its transverse diameter is greater inside than outside, because the pressure which it has to resist is from within. The interposition of car- tilage is probably for the purpose of diminishing the effect of shocks, and so preserving the integrity of the union. 40 OF THE JOINTS OF THE PELVIS. 12. The Symphysis Pubis is situated anteriorly, and formed by the junc- tion of the two ossa pubis, whose extremities are covered by cartilage or fibro-cartilage. It was formerly supposed that the junction was effected by the interposition of a single mass of cartilage ; but the researches of Dr. W. Hunter led him to the conclusion that the end of each bone is covered with cartilage, and that between each so covered, there is a matter resembling the intervertebral substance. "With this view M. Baudelocque and Dr. Burns agree, but M. Tenon thinks that sometimes the one and sometimes the other mode obtains. Occupying two-thirds of the length, and the posterior third of the centre of this junction, we find a true arthrodial articulation, six lines in length and two in breadth, in shape like an almond, lined by synovial membrane, and containing a small quantity of synovia. M. Gardien defines this joint as " an arthrodial articulation in part, and the remainder a true synevrotic syn- chondrosis."1 13. Though the joint be weak in itself, it is strongly fortified by ligaments. The capsule is strong, and is connected with, or partly formed by, the ante- rior and posterior pubic and sub-pubic ligaments, which consist of inter- lacing fibres stretched across the joint on all sides, and firmly attached to each os pubis. 14. Ambrose Pare, Severin Pineau, and other ancient writers, with Si- gault, Chaussier, Gardien, Matthews Duncan,2 etc., among the moderns, judging from its occurrence in certain animals, have concluded that the ossa pubis are separated to a certain extent during labor, and that this joint is a special provision for increasing the antero-posterior diameter of the brim of the pelvis; and certain post-mortem examinations of females who died near the full term of gestation, have been adduced in proof of the fact. On the other hand this separation is denied, and I believe most justly, by Denman, Baudelocque, Boyer, Burns, Dewees, etc. M. Baudelocque, and others, have sought for it in vain in cases where no violence has been used; and, from a fair examination of the observations on record, we may conclude that it never takes place as a natural process, but that we occasionally meet it as an accident. Dr. Dewees'3 arguments appear to me conclusive : "1. It is not stated to be more frequent in distorted than in well-formed pelves, which ought to be the case on account of the greater pressure. 2. When it does occur, it is attended with severe inconveniences, which are not observed after ordinary labor. 3. That such a separation as has been imagined, would not materially increase the antero-posterior diameter of the brim, as it would require the two ossa pubis to be separated one inch from each other to gain two lines." I may add, that this separation can only be effected by the rupture of the pubic ligaments and sacro-iliac synchondroses, the structure of which prove, beyond doubt, that they were not intended to expand ; and that when this accident does occur, it completely incapacitates the patient from moving about, by depriving the lower extremities of a firm "point d'appui," which, as M. Martin has recently shown,4 can only be restored by a band passed firmly around the pelvis, and pressing the sacro-iliac synchondroses strongly together. 15. The Sacro-coccygeal joint is of the kind called ginglymoid, admit- ting of extensive motion, especially backwards, so as to permit the enlarge- ment of the lower outlet, in its antero-posterior diameter, at least one inch. The articulating surfaces are covered with cartilage, and between them is a synovial capsule ; whilst on the outside, and entirely embracing the joint, is a fibrous capsular ligament. 1 Traite" des Accouchemens, vol. i. p. 28. 2 Dublin Journal, vol. xviii. p. 60. 3 Compendious System of Midwifery, p. 13. 4 Gazette Me"dicale, Nov. 1851. OF THE PELVIS. 41 16. Abnormal deviations. Relaxation, of violent disruption of the pubic joint and sacro-iliac synchondroses, has been well described by Dr. Den- man1 and others. The most remarkable symptom is the difficulty or impos- sibility of sitting erect, of assuming an upright position without help, of standing or walking. There is often pain or uneasiness in the pelvic region, which may give rise to a suspicion of uterine disease ; and a sense of weak- ness and looseness in the bones. Relief will be immediately afforded by a binder, which, by its tightness, shall supply the degree of firmness in which the pelvis is deficient; this and absolute rest are our chief remedies, and the former should be worn until a natural union takes place. But a further evil may occur, as Dr. Denman has pointed out. Inflamma- tion may take place in the injured joints, and matter be formed on their loosened surfaces. "When suppuration," he observes, "has taken place, in consequence of the injury sustained at the junction of the ossa innominata with the sacrum, the abscess has in some cases been formed near the part affected, and been cured by common treatment. But in others, where matter has been formed and confined at the symphysis of the ossa pubis, the symp- toms of a hectic fever have been produced, and the cause has not been dis- covered till after the death of the patient. In others, the matter has burst through the capsular ligament of the symphysis at the inferior edge, or per- haps made its way into the bladder; and in others, it has insinuated itself under the periosteum, continuing its course till it arrived at the acetabulum. The mischief being thus extended, all the symptoms were aggravated ; and the matter making its way to the surface, a large abscess has been formed on the inner and fore part of the thigh, or near the hip, and the patients being exhausted by the free and proper discharge, have at length yielded to their fate."1 In all such cases, where it is possible,, the abscess should be opened, and the matter evacuated. It. The sacro-coccygeal joint may become anchylosed, and so offer a decided impediment to the dilatation of the lower outlet during labor, as we shall see by and bye. CHAPTER III. OF THE PELVIS COLLECTIVELY. 18. Having thus examined each bone of the pelvis separately, and the joints by which they are united, our next object is the consideration of the pelvis as a whole, in relation to the rest of the body, its magnitude, axes, etc. It is connected with the trunk by the articulation of the sacrum with the last lumbar vertebra, effected in the same manner as the junction of the vertebra? with each other: with the lower extremities, it is connected by means of the hip-joints. But the position of the pelvis in situ is very different from what we might suppose from examining it separately. The brim of the pelvis is neither horizontal nor perpendicular, but oblique. When the body is erect, the upper part of the sacrum and the acetabula are nearly in the same descend- ing line. The obliquity has been variously estimated ; that of the brim from 1 Introduction to Midwifery, p. 17. 7th Ed. 2 Ibid. 42 OF THE PELVIS. 35° to 60°, and that of the outlet from 5^° to 18°. Naegele states the obliquity of the brim to be from 50° to 60°, and that of the outlet from 10° to 11°; the point of the coccyx being seven or eight lines above the summit of the arch of the pubis, and the sacro-vertebral angle three inches nine lines higher than the pubis. 19. The advantages of this obliquity are obvious. As Dr. F. Rams- botham has truly observed : " Were the axes of the trunk and pelvic en- trance in the same line, owing to the upright position of the human female, the womb, towards the close of gestation, would gravitate low into the pelvis, and produce most injurious pressure on the contained viscera; while Skeleton of Trunk. in the early months not only would the same distressful inconvenience be occasioned, but there would be great danger of its protruding externally, and appearing as a tumor between the thighs, covered by the inverted vagina."1 We may add, that, when not pregnant, the patient would be obnoxious to prolapse of the uterus and the other pelvic viscera, upon making very slight expulsive efforts. 20. Now let us examine the Pelvis itself. It is divided by the linea ilio- pectinea into the false and true, or upper and lower pelvis. The Upper or False Pelvis is formed by the lateral divergence of the alas of the ossa inno- 1 Obstetric Med. and Surgery, p; 12. 2d Ed. OF THE PELVIS. 43 Front view of Pelvis. minata. It is not of much importance obstetrically, except for the general relation which its normal size bears to that of the true pelvis, and the infer- ence to be drawn therefrom as to the normal or abnormal condition of the latter. Dr. Burns gives the following measurements, which I believe are correct: — " From the symphysis pubis to the commencement of the iliac wing at the inferior spinous process, is nearly four inches. From the inferior spinous process to the posterior ridge of the ilium, a line subtend- ing the hollow of the costa, measures five inches. The distance from the superior spine is the same. From the top of the crest of the ilium to the brim of the pelvis, a direct line measures three inches and a half. The dis- tance between the two superior anterior spinous processes of the ilium, is fully ten inches. A line drawn from the top of the crest of the ilium to the opposite side, measures rather more than eleven inches, and touches in its course the intervertebral substance between the fourth and fifth lumbar vertebras. A line drawn from the centre of the third lumbar vertebra, count- ing from the sacrum to the upper spine of the ilium, measures six inches and three quarters. A line drawn from the same vertebra to the top of the symphysis, measures seven inches and three quarters : and when the subject is erect, this line is exactly perpendicular."1 21. The Lower or True Pelvis is the part involved in parturition, and which therefore ought to be known with great accuracy. For the purpose of description, it is divided into the brim, cavity, and outlet. 22. The Brim op the Pelvis is defined by the linea ilio-pectinea : it is of an oval form, except posteriorly, where the oval is broken by the pro- montory of the sacrum. Its influence upon labor will be understood, when we recollect that it is the first solid resistance with which the head of the foetus meets : that any diminution in its size is more hazardous and less reme- diable than in any other part of the passages ; and lastly, that deviations from the normal proportions of the brim most frequently entail similar ones in the cavity. The three principal diameters are, the antero-posterior (Fig. 71) from the prominence of the sacrum to the inner and upper edge of the symphysis pubis; the transverse (2) across the widest part of the brim, at right angles to the antero-posterior; and the oblique diameter (3) from the sacro-iliac i Principles of Midwifery, p. 23. 9th Ed. 44 OF THE PELVIS. Fig. 7. Brim of Pelvis. synchondrosis of one side, to the opposite side of the brim, just above the acetabulum. Vrolick states that, to exhibit accurately the relations between the head of the foetus and the brim of the pelvis, their diameters should be so drawn as to intersect each other in the central point of the brim ; and to do so, the anterior extremity of the oblique diameter and the transverse diameter must be rather more forward than they are usually placed.1 23. The measurements of these diameters are not exactly the same in different women, though the variation is but slight. I shall place the measurements given by some of the chief authorities before the reader. Antero-post. diameter... Denman. Burns. Ramsbo-tham. Rigty. Baude-locque. Velpeau. Moreau. 4 in. & a fraction. 4 in. 4 in. 4-3 in. 4 in. 4 in. 4 in. Transverse.. 5 5 H 5-4 5 5 5 H. 5 48 H 4* H If we take the smallest of these estimates, there will still be space enough to admit the head of the child ; and if we allow half an inch for variations, this will give us a pretty correct idea of the diameters of the brim. The circumference varies from thirteen to fourteen and a half inches. Dr. Burns has given us some other measurements : " From the sacro-iliac symphysis to the crest of the pubis on the same side is four inches and a half; from the top of the sacrum to that part of the brim which is directly above the foramen thyroideum, is three inches and a half; the line, if drawn to the acetabulum in place of the foramen, is a quarter of an inch shorter; a line drawn across the fore part of the brim, from one acetabulum to the other, is nearly four inches and a quarter." 2 24. The Cavity of the Pelvis, whose fixed boundaries are the sacrum, the ischium, and the pubis, is of unequal depth. Posteriorly it measures five inches, or six if the coccyx be extended ; from the brim to the tuber ischii, three inches and three-quarters ; and the depth of the symphysis pubis is from two to two and a half inches. 1 Edin. Monthly Journal, Sept. 1852. 2 Principles of Midwifery, p. 20. OF THE PELVIS. 45 25. The antero-posterior diameter from the hollow of the sacrum to the symphysis pubis, is about four inches and a half; the transverse, at right angles with the former, is about four inches and three-quarters; and the Fig. 8. Cavity of I'elvis. oblique about five inches : a variation of a quarter of an inch either way being allowed. There are other measurements of considerable importance, inasmuch as the child's head passes obliquely through the cavity of the pelvis. Thus, from the sacro-iliac synchondrosis of one side to the tuber ischii of the other, is six inches ; and to the ramus of the ischium, five inches : from the ante- rior margin of the sacro-sciatic notch, to the opposite side, is six inches, or six and a quarter; from the anterior margin of the descending ramus of the ischium, to the opposite side, at the same level, is four inches and three- quarters. Lower Outlet of Pelvis. 26. The bones which constitute the pelvic cavity are smooth on their inner surface, and present a series of inclined planes, calculated to influ- ence the direction of the foetal head in its descent. They tend at first down- wards and slightly backwards, then downwards and forwards. 27. The Outlet of the Pelvis is of an oval shape, but irregular. Its 46 OF THE PELVIS. lateral boundaries are immovable ; but its antero-posterior diameter may be extended, owing to the mobility of the coccyx. The arch of the pubis, according to Osiander, forms an angle varying between 90° and 100°, and will permit the passage of a circular body whose diameter is an inch and a quarter. 28. The antero-posterior diameter of the outlet, from the arch of the pubis to the point of the coccyx, is from four to five inches; the transverse, from one tuber ischii to the other, is about four inches ; and the oblique, four inches and three-quarters, allowing for a variation of half an inch. 29. Now, if we compare the diameters of the brim with those of the out- let, we find that the proportions are completely changed ; that which was the shortest at the brim being the longest at the outlet, and the longest diameter of the brim being the shortest at the outlet. This remarkable change is, however, effected gradually ; for in the cavity we observe merely an approximation in the diameters. The effects of these changes upon the mechanism of parturition are very important, as we shall see by and bye. 30. The axes of the upper and lower outlet of the pelvis form an obtuse angle with each other; the former being described by a line running from <9 the coccyx upward to a little above the umbilicus, and the latter by a line ► drawn from the second bone of the sacrum through the centre of the pubic arch. If we combine these together with the inclination of the pelvis, we shall obtain a tolerably accurate notion of the direction of the canal of the pelvis. This is marked out by the central line in the accompanying figure (Fig. 10), Fig. 10. Canal of Pelvis. which I have copied from one given by M. Danyau in his translation oi Naegele's work on Oblique Distortion. 31. There is a considerable difference between the male and femah pelvis, both in shape and size. In the former, the brim is more circular and the cavity deeper. In the male, the depth of the symphysis pubis i* nearly double that of the female ; the sacrum is more perpendicular; the sacro-sciatic notches and foramina smaller; the obturator foramen oval • the OF THE PELVIS. 47 arch of the pubis is narrower, its angle being about 70° or 80° ; the tubera ischii are nearer to each other, and the coccyx less movable. From the greater width of the female pelvis, the acetabula are further apart than in the male, although the thigh bones approach each other in their descent, and the knees (in the erect position) are nearly in contact, giving a peculiarity to the movements of the female not observable in the other sex. 32. So far, we have considered the skeleton pelvis only ; but the subject would be incomplete without a brief notice of the soft parts lining the pelvis, and covering it externally. The former modify the diameters of the pelvis, and the latter must be taken into account in forming a diagnosis in the living: subject. fo ° The iliac fossae are each occupied by the iliacus internus muscle, internal to which, and slightly overlapping the edge of the brim, is the psoas muscle; these pass over the anterior part of the brim to their insertions. Near the inner margin of the psoas muscle we find the iliac artery and vein, with the crural nerves and lymphatics. In the cavity we find the obturator internus and the pyramidalis muscles, with the hsemorrhoidal and sacral vessels, and the sacral nerves. The rectum passes down nearly in the centre of the sacrum, and the bladder lies behind and above the symphysis pubis. These parts are held in situ by cellular membrane, superficial and deep fascia, etc. _ The lower outlet is nearly closed by soft parts, which are capable of great distension. On either side of the sacrum and coccyx are situated the sacro- sciatic ligament, the coccygeus muscle, and layers of fascia and cellular sub- stance ; whilst the termination of the rectum, and the perineum, consisting of transverse muscular fibres, fascia and cellular tissue, close the outlet pos- terior to the orifice of the vagina. 33. The effect of these additions, in diminishing the internal measurements of the pelvis, is not very great, except at the lower outlet. The transverse diameter of the brim is diminished about half an inch, or rather more when the psose muscles are in action, and the conjugate diameter about a quarter of an inch. The diameters of the cavity are not lessened more than a quarter of an inch. The lower outlet may be said to be almost closed in the absence of any distending force, the orifice of the vagina being the only vacancy ; but the elasticity of the perineum, etc., occasions the soft parts to be little or no permanent diminution of the antero-posterior diameter. 34. To the crest of the ilium the abdominal muscles are attached, and on the outer surface of the ossa innominata there is a large mass of muscles, the glutaai, pyriformis, gemellus superior and inferior, obturator internus and externus, and quadratus femoris. These muscles are separated by fascia, and are covered by a thick layer of adipose tissue, and the skin. The ante- rior wall of the pelvis gives origin to a great number of muscles, most of which have been already enumerated. 35. The external measurements of the pelvis are of considerable import- ance in the diagnosis of deformity, as deviations externally appreciable will, in most cases, though not in all, be found to accompany internal ones. Un- fortunately, the data we possess are but few ; however, the following, I believe, are correct: — The external antero-posterior diameter of the pelvis is from 7 to 8 inches. The external transverse, between the crista ilii of each side, 13 to 16 inches. From the anterior superior spine of one side to the other, 10 to 12 inches. From the great trochanter of one side to the sacro-iliac synchondrosis of the other, 9 inches. The depth of the pelvis, from the top of the sacrum to the coccyx, from 4 to 5 inches. 48 OF THE PELVIS. In order from these measurements to form a sufficiently-correct estimate of the internal diameters of the pelvis, we must deduct from them the thick- ness of the parietes; i. e., about three inches nntero-posteriorly, and four inches laterally, according to Baudelocque, Navas, and Yelpeau. The depth is easily ascertained externally; posteriorly, by taking the length of the sacrum; laterally, by measuring from the anterior superior spine of the ilium, and dividing by two ; and anteriorly, by taking the depth of the symphysis pubis. It is but fair to add, that doubts have been expressed of the utility and accuracy of these measurements, by Mesdames Boivin and Laehappelle, on account of the varying thickness of the parietes of the pelvis : but, even allowing for this, they appear to me of some value as an approximative estimate. 36. In this opinion I. am supported by M. Naegelo, who, in his recent work on Oblique Distortion, has pointed out certain external measurementa as a means of diagnosis, and has given a careful estimate of forty-two cases. His French translator, M. Danyau, has added to these eighty cases mea- sured by himself, and the average result is as follows : 1. From the tuber ischii of one side to the posterior superior spinous process of the opposite side, 6 inches, 6 lines. 2. From the anterior superior spine of the ilium of one side to the poste- rior superior spine of the other side, 7 inches, 10 lines. 3. From the spinous process of the last lumbar vertebra to the anterior superior spine of the ilium of either side, 6 inches, 7 or 8 lines. 4. From the great trochanter of one side to the posterior superior spine of the ilium of the opposite side, 8 inches, 2 lines. 5. From the centre of the inferior edge of the symphysis pubis to the posterior superior spine of the ilium of either side, 6 inches, 3 or 4 lines.1 These measurements are those of ordinary-sized pelves ; they will of course vary if the pelvis be unusually large or small; but the utmost variation in No. 1 was 6 lines ; in No. 2 was 11 lines ; in No. 3 was 7 lines ; in No. 4 was 9 lines; and in No. 5 was 9 lines; and these were almost all single exceptions. 37. The next point relates to the practical application of these facts, or, in other words, to the best mode of ascertaining the size of the pelvis in the living subject. A certain amount of information may be obtained from the general and equable contour of the pelvis, the breadth of the hips as com- pared with the shoulders, the degree of obliquity of the pelvis, the curve of the sacrum, etc.; and in many cases we may pronounce, from a cursory glance, that the patient is well or ill made. Should this not be so appa- rent, we must have recourse to external measurement, which is easily effected by means of a pair of curved calipers and a foot measure. Care'must be taken to place the points of the instrument accurately, as a slight deviation may produce different and incorrect results. The measurements thus obtained we can reduce to the internal diameters of the pelvis by making the deductions already mentioned, although without any pretensions to absolute accuracy. 38. There is greater difficulty in ascertaining the magnitude of the pelvis internally. In Great Britain we are almost limited to the information afforded by the "toucher;" and undoubtedly, by this means alone, a well- educated finger may obtain a sufficiently-accurate estimate for practical pur- poses. When making an examination for this purpose, the finger should 1 Des Principaux Vices de Conformation du Bassin, par Naegele, translated by M. Danyau. DEFORMITIES. 49 be passed direct to the promontory of the sacrum, and thence carried for- ward slowly to the symphysis pubis : we may then pass it across the pelvis, in the direction of the transverse and oblique diameters, and finally follow the course of the brim, taking note of any deviation from the usual form, or of any obstacle. The state of the sacrum and cavity generally, and the mobility of the coccyx, can readily be ascertained by the finger, as well as the dimensions of the lower outlet. Although deficient in precision, the information thus obtained may satisfy us of the possibility of the passage of the child ; and of course, if the patient be pregnant, and still better if she be in labor, there will be more certainty, as we shall then have the child's head as a standard of comparison. 39. But, in order to arrive at greater accuracy, certain instruments have been invented, chiefly by continental obstetricians, for measuring the internal as well as the external diameters of the pelvis. Thus we have the "compas d'f'jMisseur" of Baudelocque, the "cephalometre" of Stein, the "mecome- tre" of Chaussier, the pelvimeters of De Creve, Aitken, Coutouly, Bang, Traisnel, etc., with various modifications of modern invention ; but I do not think it necessary to enter into any minute description of these instruments, as they are seldom, if ever, used in these countries. The natural delicacy of the sex precludes their employment in the cases in which they would be of the greatest value : I mean, before marriage, or conception. CHAPTER IV. ABNORMAL DEVIATIONS IN THE P E L V I S.— D E F 0 RM IT I E S. 40. Under this title I shall include not merely distortions of the pelvis, but also certain equable deviations from its normal dimensions, which are of importance. The abnormal deviations of the pelvis may be either general Fig. 11. 4 Equable Excess of Pelvis. 50 DEFORMITIES. or special. The general or eqimble deformity of the pelvis involves the whole of the true pelvis equally, and may consist either in an excess or diminution of its usual dimensions. 41. The former of these (the pelvis crqnahiliter justo major of conti- nental writers) is not very unusual, nor is it advantageous in parturition, except perhaps in face presentations, and it may be attended with inconve- nience. Giles de la Tourette has recorded one where the antero-posterior diameter was five inches and a half, the transverse six and a half, both diameters of the lower outlet five and a half, and the distance between the crests of the ilia twelve and a half inches. Dr. Burns mentions his having a very large one, but not quite equal to the one just mentioned. My friend Dr. Murphy possesses one of about the same size. The relative proportion of the diameters sometimes varies, so that the brim may assume an oval shape antero-posteriorly, or a heart shape, and still all the diameters be excessive. 42. It is evident that a pelvis preternaturally large may be a disadvantage to a female who is not pregnant, as it will favor prolapse of the pelvic viscera; and also to one who is pregnant, by more readily permitting descents, displacements, etc. Its inconvenience during parturition consists Fig. 12. Equable Diminution of Pelvis. in the want of that degree of contact with the head of the child necessary to impress upon it the usual partial rotations and changes of direction ; and the facility with which it would admit of prolapse of the womb afterwards. Fig. 13. Distortion of Brim of Pelvis. DEFORMITIES. 51 43. It is more rare to find a pelvis whose size is equally diminished (the pelvis cequabiliter justo minor), without much relative disproportion between its diameters, although Naegele and Velpeau think it more com- mon than writers in general have supposed; and in support of this opinion it may be added, that modern investigations have discovered that in many, if not most cases of rickets, even where there is no apparent distortion of the pelvis, there is a certain diminution (one fourth, I believe) in the aggre- gate diameters. The obstruction which this deformity offers to delivery is sufficiently obvious. 44. The special distortions of the pelvis are much more frequent. They occur at the brim, in the cavity, or at the lower outlet, but are rarely limited Distortion of Brim of Pelvis. to one of these situations. The distortion may also occur in any of the diameters, though the antero-posterior diameter of the brim, and the trans- verse of the lower outlet, present them most frequently. 45. At the brim we find distortions more common in the antero-posterior diameter, as I have said; next in the oblique, and lastly in the transverse diameter. Fig. 15. Distortion of Brim of Pelvis. 52 DEFORMITIES. The sacrum may be pushed forward toward the symphysis, or the sym- physis toward the sacrum. If the sacrum be more slightly pressed forward, it will make the opening a heart shape, and may change the length of the oblique as well as the an- tero-posterior diameters. In some cases the acetabula are pushed inwards, as well as the sacrum forwards, diminishing the oblique and antero-posterior diameters, and com- pletely distorting the brim. This was the case with Isabel Redman, ope- rated upon by Dr. Hull; and similar examples are recorded by Weidmann, Aitken, Mad. Boivin, etc. In other cases, the oval of the brim is transposed, the long diameter being antero-posterior instead of transverse; as in the next figure. Fig. 16. Distortion of Brim of Pelvis. 46. In the cavity, distortions are in most cases consequent upon those of the brim or outlet; though we occasionally meet with instances where the Fig. 17. Distortion of Cavity of Pelvis. DEFORMITIES. 53 sacrum is too much or too little curved, when the other parts of the pelvis are of normal form. In some very rare cases the cavity contracts gradually from the brim to the outlet, forming what has been called a "funnel-shaped pelvis." The capacity of the cavity may also be diminished by a fibrous or bony growth from the sacrum, as in the annexed figures. The first (Fig. 18) is Fig. 18. Distortion of Cavity (Exostosis). comparatively small, though sufficient to interfere seriously with labor; the second (Figs. 19, 20), which is an exostosis, would preclude the possibility of delivery "per vias naturales." Fig. 19. Exostosis of Cavity of Pelvis. The third is a fibrous growth from the periosteum : the case occurred in the Dublin Lying-in Hospital, and has been described by Dr. Shekelton,1 to 1 Dublin Journal, vol. x. p. '1S7. New Series. 54 DEFORMITIES. whom I am indebted for the cast from which this drawing has been taken. These morbid growths from the periosteum or bone involve the same diffi- culty as distortions, inasmuch as they are incompressible and immovable ; but, unlike most distortions, they increase slowly, so that the longer they continue, the greater the obstacle. 47. The lower outlet is comparatively independent of the brim and cavity. Fig. 20. Exostosis of Cavity of Pelvis. It is by no means uncommon to experience delay, arising from a narrowing of the brim, with a rapid passage of the head through the outlet; but of course, in extreme cases of distortion, the outlet participates, as is shown in Fig. 21. Exostosis of Cavity of Pelvis. the figures annexed; fig. 22 being the lower outlet of fig. 15, and fig. 23 of fig. 17. On the other hand, distortions of the lower outlet may occur with a normal shape and size of the brim. They are most frequent in the trans- verse diameter, owing to the approximation of the tubera ischii, which at the same time will diminish the span of the arch of the pubis, and so effectu- DEFORMITIES. 55 Fig. 22. Distortion of Lower Outlet of Pelvis. ally, though not apparently, shorten the antero-posterior diameter. The other way in which the latter diameter is lessened, is by too great a curve forward of the lower part of the sacrum and coccyx, and by the anchylosis of the coccygeal joint. There is a case related by Dr. Summer, in the American Journal of Medicine, in which the projection of the coccyx, the joint being anchylosed, was so great as to cause the death of three infants successively. The fourth time Dr. S. endeavored to straighten it, but being unable, he broke it, and the child was born alive. The same proceeding was necessary in two subsequent labors. The spinous process of the ischium may offer some obstruction, if it be unusually long, and curved inwards. Fig. 23. Distortion of Lower Outlet of Pelvis. 48. The amount of these distortions varies as much as possible : it may be so slight as merely to retard delivery; or it may be so great as to pre- clude it altogether, as in Mr. Bell's case, where the antero-posterior diameter was about half an inch, or in that recorded by M. Naegele, in which it was even less. 49. In most cases of pelvic deformity the distortion is somewhat unequal, one side suflering more than the other; but there is a class of cases in which 5 6 D E F O R M1T I F S. this distortion is almost entirely confined to one side. An allusion to such will be found in several authors ; but it remained for M. Naegele to add to his high reputation by a careful and accurate description of this oblique dis- tortion (" das shriig verengte becken," or "pelvis oblique orata"). In these cases (fig. 24), the affected side is flattened, and the sacro-iliac syn- OWique Distortion of Pelvis. chondrosis anchylosed. Half the sacrum is imperfectly developed ; and the other, though at first sight it appears well formed, is found to be awry : the promontory of the sacrum and the symphysis pubis are not (as they ought to be) opposite to each other, but the former leans to the affected side, and the latter is pushed over (as it were) to the sounder side, so as to make the form of the pelvis oblique. 50. As we should expect, the planes and axes are altered more or less in all well-marked cases of distortion. When the promontory of the sacrum projects, the axis of the upper outlet is more horizontal; but if the aceta- bula are pressed inwards, it may become more perpendicular. The axis of the lower outlet may be changed in the opposite, but more frequently in the same direction, the two becoming almost parallel: nay, there is a case quoted by Velpeau, in which they were reversed : that of the lower outlet look- ing forward, whilst that of the brim was directed backward. In the majority of cases, I believe we may say that the planes and axes of both outlets approximate to the plane of the horizon. 51. The principal causes of distortion are, 1, rickets in infancy and child- hood; and, 2, malacosteon, or molleties ossium, in adults. The effect of both diseases is to deprive the bony structure of the earthy matter which gives it firmness; in the absence of which, the bones become flexible, and are influenced by muscular motion, or long-continued pressure. Thus, if in such circumstances the patient maintain the sitting posture long, the pro- montory of the sacrum may be pushed forwards, or the symphysis upwards; the lower part of the sacrum may be too much curved, and the os coccygis rendered horizontal. If the upright position be continued long, the aceta- bula may be pressed inwards, and the promontory of the sacrum forwards. If the patient lie much on her back, the sacrum may be flattened ; or, if on one side, it may be rendered unequal. Besides these special deformities, it has already been mentioned, that, in DEFORMITIES. 57 patients affected with rickets, the aggregate of the diameters of the pelvis is lessened one-fourth, even when the pelvis is apparently unaffected. 52. Any of these special distortions may occur in the same way in adults affected with malacosteon, and at any period of their life ; so that it has hap- pened that a female, who had borne children naturally, has at a subsequent labor exhibited such an extent of pelvic distortion as required the use of instruments, or the Caesarean operation. Both diseases appear to be more frequent in manufacturing towns than in country districts. 53. It is extremely difficult to assign the cause of oblique distortion. Naegele states that he could detect no traces of rickets or mollities ossium in any of his cases, nor had any suffered from external violence. The bones presented the same appearance as those of healthy young females. He believes that it neither arises from external causes, nor from internal dis- ease ; but from an original anomaly of development.1 Dr. Rigby, however, thinks that ulcerative absorption must have existed at the sacro-iliac junc- tion, probably in early life. 54. I have already mentioned as a cause of deformity, 3, exostosis; and may further add, 4, fractures of the pelvis, and 5, inflammation of the sacro- coccygeal joint, terminating in anchylosis, to which I have already referred, but upon which it is unnecessary that I should dwell. 55. The diagnosis of distortion is easy in proportion to its amount. If the pelvis be much deformed, it may be detected by an external or internal examination, and estimated with sufficient accuracy for practical purposes. But if it be only slightly affected, it will not be so easy to decide upon the possibility of the passage of the child, unless we have the head of the child, to compare with the pelvis. Without this, we must chiefly depend upon a comparison of the external measurements with those of a well-formed pelvis, and upon the information obtained by a careful internal examination. From these sources, an experienced practitioner will probably obtain data for a satisfactory though cautious diagnosis. But if we are not consulted until the patient be in labor, our task will be comparatively easy, because the head will be in apposition with the part (brim, cavity, or outlet) where we suspect the narrowing to exist. Dr. Simpson's plan is to place the patient under the influence of chloro- form, and then introduce the entire hand into the pelvis; the breadth of the knuckles, when the hand is closed, affords a definite object of comparison with the antero-posterior diameter of the brim. A very slight degree of narrowing of the transverse diameter of the lower outlet may be detected, by its rendering the arch of the pubis more acute, and, consequently, preventing the head of the child pressing close up under it. Whenever we find the head fitting tightly between the tubera ischii, and yet a space under the arch of the pubis free, we may be certain that the tubera ischii are closer together than natural. 56. Oblique distortion may be detected in two ways, according to M. Naegele : 1, by dropping a line perpendicularly from the spinous process of the last lumbar vertebra, and another from the symphysis pubis; when the pelvis is well formed, these two lines are exactly one behind the other: but when it is obliquely distorted, they are parallel, with a considerable in- terval : 2, by measuring the pelvis externally in the way already described (§ 35, 36), we find that there is always a difference between the two sides of the pelvis, varying from one to two inches. To give an example, in a pelvis affected with oblique distortion of the left side, the measurement No. 1 (§ 36), was : 1 The reader will find an excellent translation of Naegele's valuable memoir, by Dr. Christie, of Aberdeen, in theliritish Record of Obstetric Medicine. 58 DEFORMITIES. 6 in. 11 lines on the left side, and 5 in. 8 lines on the right, No. 2, 7 " 9 " " " 6 " 10 " No. 3, 6 " 6 " " " 5 " 3 " No. 4, 9 " 0 " " " 8 " 0 " No. 5, 6 " 11 " " " 6 " 1 " Let the reader compare these with the measurements of a well-formed pelvis, as already given, and he will be convinced that either method, or the two combined, will afford fair grounds for a diagnosis. Anchylosis of the sacro-coccygeal joint will be discovered by its immobility when pressed by the finger during an external examination. The effect of the different kinds and degrees of deformity upon the mechan- ism of parturition, and the practical considerations upon which the manage- ment of such cases must be founded, will be discussed in the Third Part of this work. [In a great majority of the cases of reduced or distorted pelves, the degree of deviation from the natural standard, although perhaps sufficient to cause great difficulty in delivery, is nevertheless too small to be readily detected by the external measurements pointed out by the author. The calliper, or " Le compas d'epaisseur de Baudelocque" (fig. 25), so much Fig. 25. Calliper for measuring Pelvis (Baudelocque's). relied on by some, is only calculated for measuring the antero-posterior diameter, and its indications are not always to be depended on here. In experienced hands, it will afford important but not conclusive testimony as to the probable distance between the promontory of the sacrum and the symphysis pubis. The manner of accomplishing this is to place the patient on her side on the bed, and then, separating the thighs, the extremity of one branch of the instrument is applied to the first spinous process of the sacrum behind, and the opposite extremity upon the middle of the symphysis in front: the intervening space is shown by the scale (d), and ought to be full seven inches. By deducting half an inch for the thickness of the pubis, and two and a half inches for the sacrum, four inches remains as the probable antero-posterior diameter of the upper strait, or brim. The oblique dia- meters are also measured by the same instrument. Placing one of its ends upon the external surface of the great trochanter, and the other on the pro- jecting portion of the opposite sacro-iliac junction, in a well-formed pelvis, we should have about nine inches of separation. Allowing two and three quarter inches for the trochanter, neck of the femur, and acetabulum, and one inch and three quarters for the posterior symphysis, leaves four inches and three quarters as the oblique diameter. But this measurement, for obvious reasons, is less to be relied on than the first; in fact, two occasions of error exist, more or less, in both ; viz., 1, In fixing the extremities of the instrument exactly on the right points ; and, 2, the variations that occur in different individuals, in the thickness of the bony walls of the pelvis, and DEFORMITIES. 59 e-pecially of the soft parts covering them. In ordinary or well-formed pelves these difficulties are not great, it is true ; but when much malformation exists, thev are sufficient to destroy all confidence in the accuracy of the results. In figure 23, page 55, for instance, the instrument, properly ad- justed, would indicate a full-sized antero-posterior diameter, although in reality the space which is available for the passage of the child is extremely small. A careful examination with the hand, applied along the lnmbar column, the sacrum, and coccyx, and over the arch of the pubis, observing the angle formed by these parts, one with another, and, in short, their general form and proportions, will convey to one well acquainted with their normal state a more satisfactory opinion than any instrument that has yet been invented. But there may be exostoses or other tumors within the pelvis, very seri- ously affecting the space, and totally undiscoverable by external examination, so that, for all certainty, internal investigation alone can assure us of the true condition of the parts. The pelvimeters of Coutouly, Mad. Boivin, and others, for internal admeasurement, have been found painful, inconvenient, and uncertain, and are now, at least in this country, entirely discarded; the only instrument here employed for such explorations is the finger ;—as justly observed by a late continental writer, " It is the best and surest of all pelvimeters." The manner of making this examination is thus described by Chailly: "To appreciate the extent of the antero-posterior diameter of the superior strait, the index finger should be passed in the vagina in the axis of the inferior strait, towards the sacro-vertebral angle, the radial side of the finger being applied immediately under the pubis. If the end of the finger does not touch the sacro-vertebral angle, it is because the diameter is of normal dimensions ; or, if it is contracted, that the degree of contraction is so small that parturition will not be materially affected by it. But, if the finger readily touches the sacro-vertebral angle, there is reason to apprehend more or less difficulty. To measure, in this case, the extent of the sacro-pubic diameter, it is necessary to mark, with the nail of the index finger of the other hand, the finger introduced, directly below the pubis, the labiae and nymphae being carefully separated for the purpose; on withdrawing the finger, the length of the part introduced may be readily measured with a graduated scale. Fig. 26. Fig. 27. Measurement of Pelvis by the Fingers. Measurement of Pelvis by the Fingers. " Some little allowance is to be made for the length of the oblique line represented by the finger, which, instead of passing directly to the centre of the pubis, falls under it. " With the finger we can easily discover whether the concavity of the sacrum is augmented or diminished, which will enable us to determine whether the antero-posterior diameter of the excavation is deranged. " The antero-posterior diameter of the inferior strait may be ascertained 60 EXTERNAL ORGANS OF GENERATION. in the same manner as the corresponding diameter of the upper strait : the end of the forefinger being placed on the extremity of the coccyx, the hand must be raised until the radial edge of the finger touches beneath the pubis ; being marked at this point, it can be measured as before described. " The finger thus introduced enables us at the same time to judge of the flexibility or otherwise of the sacro-coceygeal joint.ri There is indeed very little difficulty in ascertaining accurately the diameters of the inferior strait with the fingers externally applied. During the labor, the internal examination of the pelvis is greatly facili- tated by the relaxed condition of the internal parts ; and, if necessary, the hand may be introduced for the purpose.] CHAPTER Y. OF THE EXTERNAL ORGANS OF GENERATION. 57. We may now proceed to describe the generative organs in the female. These are ordinarily divided into the external and internal, or, with regard to their functions, into the copulative and formative. The external or copu- lative, consist of the mons veneris, the labia majora, and minora, the clitoris, the hymen, and the vagina. The internal or formative, consist of the ovaries, the fallopian tubes and uterus. Most English writers place the vagina among the internal organs ; but, as it belongs to the copulative, I have classed it with them ; the point is of little importance. There is a striking analogy between the male and female organs, except as to situation ; and at an early period of foetal life, the sex cannot be distinguished. In the pre- sent chaDter we shall notice the external organs. Fig. 28. External Organs of Generation. 58. The Mons Veneris is the triangular, cushion-like prominence at the lower part of the abdomen and upper part of the symphysis pubis. It con- sists of a thick layer of adipose tissue underneath the skin, upon which at 1 [L'Art des Accoucheniens, par Chailly, 175-189.] EXTERNAL ORGANS OF GENERATION. 61 puberty, a quantity of hair makes its appearance. I have remarked a pecu- liarity in women with regard to this growth of hair. It is strictly confined to the labia and mons veneris, and scarcely ever extends to the thighs in the neighborhood of the vulva. In the cellular tissue, is lost the round liga- ment, and there is sometimes a small pouch of peritoneum. The skin is plentifully supplied with sebaceous glands. The ?/..se of this cushion is*e* very evident. 59. Abnormal deviations.—Occasionally the growth of hair is excessive. In one case Dr. Davis found it necessary to destroy it on account of the itching it caused. On the other hand, in some cases it is nearly absent with- out apparent inconvenience. This part is also the seat of cutaneous erup- tions and abscess.1 60. The Labia Majora, vel Externa, are two folds of skin externally, and mucous membrane internally, continued downwards from the sides of the mons veneris to the fourchette. Their junction superiorly constitutes the anterior commissure of the vulva, and they enclose the external organs of generation. Their breadth and thickness are greatest superiorly, gradually decreasing until they disappear near the fourchette. Superiorly they are in contact, but they are separated posteriorly. The external labia, contain, between the skin and mucous membrane, subcutaneous fascia, adipose and cellular tissue, nerves and blood-vessels, and glands. M. Huguier, in a very elaborate memoire, has described these glands, which he divides into three varieties — " follicules sebaces, piliferes, et organes mucipares." The most important are, however, those he has termed the vulvo-vaginal glands, which are situated one on each side of the vaginal orifice, and a little behind it, opening by ducts about half an inch long near the hymen at the base of the carunculae. They are about the size of a small almond, and secrete mucus profusely at certain times. They are thought to be the analogues of Cowper's glands in the male.2 Externally, the labia are thinly covered with hair, and thickly studded with sebaceous follicles. Their use is to protect the sensitive organs contained between them, and at the time of labor to facilitate the distension of the external orifice. 61. Abnormal deviations.—These are chiefly, 1, excessive growth, attended with mechanical inconveniences ; 2, inflammation and abscess ; 3, cutaneous eruptions, pruritus, etc. ; and 4, encysted tumors, hernia, etc. 62. The Labia Minora, or NyMphje, are two lateral folds of mucous membrane, internal to the labia majora, with which they are in contact ex- ternally, and by which they are generally covered in the adult. They extend from the anterior superior portion of the vulva to about the middle of the orifice of the vagina, and contain between their mucous coats a spongy vas- cular tissue and nerves. They enfold the clitoris, the meatus urinarius, and cover part of the vaginal orifice. In young persons they are firm and elastic, but in old age they become flabby and loose. They doubtless contribute, with the labia majora, to maintain the integrity and sensibility of the parts they cover. 63. Abnormal deviations.—The nymphse are obnoxious to inflammation, follicular ulceration, and hypertrophy, either congenital or the result of disease. 64. The Clitoris is the analogue of the penis in the male. It consists of two corpora cavernosa, which arise from the rami of the ischia and pubis, and unite on the symphysis pubis. It possesses two muscles analogous to 1 It would be inconsistent with the object of a work like the present to enter into details upon the various diseases to which the parts are subject; I must therefore content my- self with enumerating them, and refer the reader to my work on Diseases of Women. 2 M6m. de l'Acad. Med. de Paris, vol. xv. p. 528. 62 EXTERNAL ORGANS OF GENERATION. the erectores penis, and terminates in a gland covered by a prepuce, but which is imperforate. The clitoris projects about the eighth of an inch, and is situated just below the point of junction of the nymphoe. It is richly endowed with nerves, extremely sensitive, capable of erection, and is said to be the seat of sexual gratification. In the foetus it is disproportionately large, but it does not increase afterwards in proportion to the surrounding parts. 65. Abnormal deviations.—The clitoris may vary in size from congenital malformation or disease; but the researches of M. Parent-Duchatelet1 have disproved the opinion that it enlarges from frequent sexual indulgence ; and, according to the same high authority, its excessive development does not entail extreme sexual desire. This organ may be attacked by inflammation, or by malignant disease. Bartholinus relates the case of a courtezan whose clitoris was the seat of calcareous deposition 66. Below the clitoris there is a smooth triangular space,—the Vestibu- LUM,—at the lower part of which we find the Orifice of the Urethra, or the Meatus Urinarius, just at the upper edge of the orifice of the vagina. The exact situation of this opening is important, because we are frequently called upon to introduce the catheter, and in ordinary cases it should be done without exposure. The operation is not difficult: the patient being placed on her back, and the labia being separated, the point of the forefinger of the left hand should be placed just within the orifice of the vagina, so as to press slightly its upper edge : the catheter should then be passed along the inner surface of the finger, until it reaches the vestibulum, near the edge of the vaginal opening; when there, a very slight movement will cause it to enter the meatus urinarius. Or the patient may be placed on her left side, in the ordinary position for labor, and the finger carried from behind for- ward to the vestibulum ; the catheter should then be passed along the finger in the direction of the axis of the outlet, and on reaching the vestibulum, a slight movement will detect the orifice. The operation is more difficult when the parts are swollen or distorted, as happens occasionally from disease. during pregnancy or labor, and after delivery; and if we cannot detect the orifice by the touch, we must of course use a light; and then, for obvious reasons, it is better that the patient should be placed on her side. The orifice is round, though its sides are usually in contact^ and its edges are somewhat thickened. 67. The Urethra is a membranous canal about an inch or an inch and a half in length, dilatable, and directed obliquely from before backwards, and from below upwards, running under and behind the svmphysis pubis, from which it is separated by loose cellular tissue. Internally it opens into the bladder. Its direction is subject to variation. During pregnancy, the bladder being carried upwards with the uterus, the urethra curves under the pubic arch, and then ascends perpendicularly. The same change occurs when the uterus is enlarged from other causes. In prolapse of the pelvic viscera its course is reversed. These changes should be borne in mind when catheterism is required. 68. Immediately below the orifice of the urethra we find a much larger opening, of about an inch in diameter,—the Orifice of the Yagina Its sides are in contact ordinarily, but it is capable of enormous distension and of again returning to its natural size. The opening is closed inferiorly in infants, by a fold of mucous membrane of a crescentic shape, the concavity looking upwards, and which is called the Hymen. This membrane is easily destroyed, or it may become so relaxed as scarcely to be perceptible which 1 De la Prostitution de la Ville de Paris. 1836. EXTERNAL ORGANS OF GENERATION. 63 will account for its rarity in adults. It was formerly held to be peculiar to the human female, but the researches of MM. Duvernoy, Cuvier, and Steller have proved its existence in many animals. From very early times it has been made the test of virginity, its absence being considered conclusive proof of sexual intercourse having taken place ; nnd the fate of the wives of Henry VIII. is an extreme instance of the injustice to which this opinion led. Modern investigations have proved, not only that it may be destroyed by many causes unconnected with sexual indulgence, but that intercourse may take place, followed by pregnancy, without its destruction, as in three cases which occurred in my own practice. It is therefore of no value as a test of virginity. 69. Abnormal deviations. — The principal ones are the following: 1, it may be unusually thick and strong, so as to preclude intromission ; 2. instead of the single opening superiorly, it maybe pierced with several small holes; 3, instead of the usual form, the hymen may consist of a single or double bridle stretching across the orifice of the vagina; or, 4, it may be imperfo- rate, and close the vagina completely. Examples of each kind are recorded in the different works on midwifery, and in the periodicals. These abnormal deviations are of importance only as they may prevent sexual connexion, or impede the natural discharges or delivery; and once discovered, they are easily removed. 70. The Carunculje Myrtiformes are four or five small tubercles, which in most females occupy the situation of the hymen, of which they are con- sidered the remains by most anatomists: others, however, suppose them to be small duplicatures of the mucous membrane of the vagina. They may possibly facilitate the distension of the orifice of the vagina by unfolding. Abnormal deviations.—Occasionally they are greatly hypertrophied. 71. The parts contained within the vulva are abundantly supplied with nerves, owing to which, and to the extreme delicacy of their texture, they possess exquisite sensibility. This explains the very severe pain which accompanies even trifling diseases of these parts ; and it is merely a repeti- tion of the fact observed in other mucous membranes, viz., that they acquire their highest degree of sensibility near their junction with the skin. 72. The Fourchette is the inner edge of the posterior commissure of the vulva, and the anterior border of the perineum, between which is a space called the fossa navicularis ; it is formed by the union posteriorly of the labia. It consists of a fold of mucous membrane, meeting externally the skin of the perineum, and is frequently, perhaps generally, torn slightly in first labors. 73. The Perineum is the name given to the space between the posterior commissure and the anus. It is of a somewhat triangular shape, and its medium length, in women who have not borne children, is from one to two inches. It is shorter, of course, in those who have had children. In the centre a prominent line may be observed, running antero-posteriorly, called the "raphe." The perineum is composed of various tissues; externally there is the skin, then adipose and cellular tissue, fascia, a portion of the constrictor vaginae, levator ani, transverse and sphincter muscles; besides which, it contains the superficial and transverse arteries, veins, nerves, and lymphatics. Very few hairs grow on this part. The use of the perineum is obvious: it closes the lower outlet posteriorly, so as to prevent the prolapse of the pelvic viscera; whilst it admits of dis- tension when necessary, and by its elasticity, speedily resumes its former condition. 74. Abnormal deviations. — The perineum is sometimes unusually long, increasing the risk of its laceration during labor; or it may be very short, and so afford inadequate support to the superimposed viscera. It may be 64 EXTERNAL ORGANS OF GENERATION. torn in various ways during labor, as we shall see hereafter, and either not unite or present the cicatrices of former lacerations. It is sometimes the seat of hernia, according to Smellie. Mery, and Curade. 75. The Vagina is a musculo-membranous canal, extending1 from its orifice in the vulva (§ 68) obliquely through the cavity of the pelvis to the uterus. It posses upwards from the vulva behind and below the urethra and bladder, between the ureters, and anterior to the rectum, describing nearly the line of the canal of the pelvis (§30). Its form is cylindrical, somewhat flattened superiorly, but. when quiescent, its parietes are in contact. Its dimensions vary according to nge, and other circumstances ; for instance, it is propor- tionately longer in the foetus than in the child. In some individuals it is very long, in others very short. Dr. Dewees mentions a case where it was only an inch and a half long, and I have met with others nearly as short. It is also longer and narrower in virgins than in those who hove borne children. Ordinarily it is about six inches in length, by one in width. The proper tissue of the vagina is dense, and of a grey pearly color, re- sembling in some degree fibrous tissue, and about a line and a half in thick- ness anteriorly, though less near the womb. It is well supplied with vessels, which are multiplied and interlaced so much towards its anterior extremity as to constitute a kind of erectile tissue, which has received the name of plexus retiformis- Internallv, the vagina is lined by mucous membrane of ,a pink color, continued from the vulva, and which near the orifice, and there only, possesses great sensibility, except when it is the seat of inflamma- tion, and then the whole canal is very tender. The mucous coat is disposed in the form of transverse rugae, anteriorly and posteriorly, which, by unfold- ing, permit the distension of the vagina. From the "cut de sar," at the inner extremity of the vagina, the mucous membrane is reflected down upon the projecting cervix uteri, and exhibits peculiarities of which I shall speak presently. In addition to its proper tissue and mucous coat, the vagina has some muscular fibres surrounding its orifice, which have received the name of constrictor vagina?, and which serve to contract the orifice, and to draw down the clitoris. The vagina, in com* ion with the vulva, is abundantly supplied with blood-vessels from the intei lal iliac arteries, and wiih nervous filaments from the pudic nerves. The lym- phatics, which are very numerous, are derived from the hypogastric plexus. The use of the vagina is twofold; first, for copulation, and, secondly, for the transmission of the foetus; and, to facilitate the latter process, the inn?r membrane, which in its ordinary state secretes just enough mucus to lubri- cate its surface, during labor, secretes it most profusely. It has been established by the observations of Whitehead, Tyler Smith, and others, that the vaginal mucus is acid, thus differing from that of the uterus, which is alkaline. 76. Abnormal deviations.—The vagina varies much in length, as already stated: its width differs equally in different subjects; it may be so narrow as to render intercourse difficult and painful; its exit may be closed by the hymen, or by a membrane higher up ; its sides may be adherent, or the* seat of cicatrices or callosities; or it may be altogether wanting. Of course, occlusion or absence oif this canal will prevent the escape of the menses, and render copulation impossible, constituting one cause of ste- rility; but, though a partial closure may impede intromission, it does not render impregnation impossible. I may add, that the narrowness or width of the canal is no proof of virginity, or the contrary; for M. Parent-Ducha- telet states, that in many of the younger prostitutes of Paris it was wide and dilated ; whilst in others, who had followed their degrading pursuits for twenty years, it might have been mistaken for the vagina of virgins. Dr. Montgomery has pointed out, what most practitioners must have observed, how very quickly, after delivery, the vagina recovers its usual size and lone. EXTERNAL ORGANS OF GENERATION. 65 The vagina is also very obnoxious to attacks of acute and chronic inflam- mation, and their consequences; to lesions of nutrition, and to specific and malignant diseases. [The annexed two cuts will assist in presenting to the mind of the student a clear idea of the anatomy of the external organs of generation.] Front view of the erectile structures of the external organs of generation in the female. — a. Bulbus vestibuli. 6. Sphincter vagina? muscle, e, e. Venous plexus, or pars intermedia. /. Glands of the cli- toris, g. Connecting veins, h. Dorsal vein of the clitoris, k. Veins going beneath pubes. 1. The obtu- rator vein. [Fig. 30.] A view of the muscles of the perineum in the female. — 1. Tuber ischii. . 2. Sphincter vaginas muscle. 3. its origin from the base of the clitoris. 4. Vaginal ring of the same muscle, which receives a part of the fibres of the levator ani. 5. Intercrossing of the sphincter ani and sphincter vaginas muscles at the perineal centre. 6. Erector clitoridis muscle. V. The clitoris covered by its prepuce. 8. Transversus perincj muscle of the female. 9. Sphincter ani. 10. Levator ani. 11. The gracilis. 12. Adductor mag- nus. 13. Posterior part of the gluteus magnus. 5 66 INTERNAL ORGANS OF GENERATION. C HA PTER VI. OF THE INTERNAL ORGANS OF GENERATION. 77. According to the arrangement I have proposed, our next subject is the formative, or internal organs of generation. But before we proceed to take them in detail, it will not be unprofitable to direct the attention of the student to the relative situation of the pelvic viscera, as shown in the next engraving. Fig. 81. Section of Pelvis. Proceeding from before, backwards, we find the urethra running in an oblique direction, antero-posteriorly, and from below, upwards, under the arch of the pubis, and then merging in the bladder, which, when distended, rises about half its height above the symphysis pubis. Below the urethra, but with an interval between them, is the vagina, running its oblique course to the os uteri, which is a little above the level of the pubes. The position of the uterus is not vertical, but inclining a little forward, with its fundus above the level of the bladder. The peritoneum is reflected from the abdo- minal parietes, on the fundus and posterior wall of the bladder down to the commencement of the cervix uteri; from whence it passes over the anterior surface, fundus, and posterior surface of the uterus, and on to the posterior wall of the vagina, down to about an inch below the level of the os uteri, from whence it is reflected upon the rectum. The latter organ lies between the uterus and the sacrum, and a little to the left side of the uterus. I do not of course mean that this exact position of the parts never varies, but the sketch I have given is sufficiently accurate for practical purposes ; and it is very important for the practitioner to be acquainted with the position and elevation of the pelvic viscera. We may now pass on to the description of the uterus, fallopian tubes and ovaries.1 1 I beg to refer the reader for more minute details than I have space for, to Dr. Farre's able article in Dr. Todd's Cyclopaedia of Anatomy and Physiology, Parts 49, 50. INTERNAL ORGANS OF GENERATION. 67 78. The Uterus is the receptacle provided for the nutrition, maturation, and, ultimately, for the expulsion of the foetus. It is the largest of the generative organs, and is peculiar to the human female, though there is an approach to such an organ in the mammalia. It is a hollow symmetrical viscus, in shape somewhat triangular or pyramidal, resembling a flattened pear, but rounder posteriorly than anteriorly ; situated, as we have just seen, in the centre of the pelvis, behind the bladder, above the vagina, below the small intestines, and in front of the rectum. For the convenience of descrip- tion, anatomists ordinarily divide it into the fundus, or that part above a line drawn from the orifice of one fallopian tube to the other; the cervix, or the narrow and inferior part; and the body, or that part between the fundus and cervix. Dewees maintains that the cervix differs essentially, in structure and function, from the rest of the uterus. The microscopic re- searches of Dr. Tyler Smith have shown certain peculiarities of arrangement, and differences of structure, in its internal and external mucous membrane; its general structure is more dense, less vascular, and the menses are not excreted by this part. In the unimpregnated state it projects into the vagina about half or three-quarters of an inch, the anterior lip being the lower. 79. The uterus gradually assumes its normal form' during foetal and infantile life. Dr. Rigby remarks, that it is at first divided into two cornua, and usually continues so until the end of the third month, or even later; the younger the embryo, the longer are the cornua, and the more acute the angle which they form ; but even after this angle has disappeared, the cornua continue for some time longer. The uterus is at first of an equal width throughout; it is perfectly smooth, and not distinguished from the vagina, either internally or externally, by any prominence whatever. This change is first observed when the cornua disappear, and leave the uterus with a Uterus, Tubes, and Ovaries. simple cavity. The upper portion is proportionally smaller, the younger the embryo is. The body of the uterus gradually increases, until, at the period of puberty, it is no longer cylindrical, but pyriform. Even in the full-grown foetus the length of the body is not more than a fourth part of the whole uterus ; from the seventh to the fourteenth year it is only a third ; nor does it reach half until puberty has been fully attained. The os tincse, or os uteri externum, first appears as scarcely a perceptible prominence, projecting into the vagina. The parietes ofthe uterus are thin in propor- tion to the age of the embryo. They are of equal thickness throughout, at first; at the fifth month, the cervix becomes thicker than the upper parts; 68 INTERNAL ORGANS OF GENERATION. between five and six years of age, the uterine parietes are nearly of an equal thickness, and remain so until the period of puberty, when the body becomes somewhat thicker than the cervix.1 SO. The adult healthy uterus may vary a little in size, but the following measurements, given by Dr. Burns,2 are sufficiently accurate. " The length of the uterus, from the margin of the lip to the fundus, is two inches and three-quarters ; breadth between the insertion of the fallopian tubes, from two inches and three-eighths to two inches and five-eighths ; the middle of the fundus rises a quarter of an inch above a line drawn from the insertion of one tube to that of the other; the commencement of the body is an inch and a quarter broad, its thickness is an inch ; the whole of the wall is half an inch, but at the fundus it is seven-eighths, or one-eighth of an inch less. The thickness of that part of the cervix which projects into the vagina, including the coat of that canal which is reflected over it, is an inch and one- eighth ; its breadth an inch and a quarter. The breadth of the termination or lips of the os uteri, an inch and one-eighth ; thickness, including both lips, three-quarters of an inch. The length of the transverse chink, or os uteri, from three-eighths to half an inch ; each lip is three-eights of an inch thick, though the posterior is said to be the thinnest." "From the margin of the lip to the top of the cervix is an inch, but sometimes only three- quarters, or even less. From the top of the triangular cavity of the fundus to the end of the narrow cylindrical cavity of the body is an inch and one- eighth ; the extreme breadth of the top of the cavity stretching from the entrance of one tube to that of the other is nearly an inch and a half." Fig. 33. Cavity of the Uterus. According to the calculations of Levret, its superficies may be reckoned at sixteen inches, and its cavity at eleven-twelfths, or about three-quarters of a cubic inch. 1 Library of Practical Medicine, vol. vi. — Midwifery; p. 2 Principles of Midwifery, p. 50. 16. INTERNAL ORGANS OF GENERATION. 69 The weight of a virgin uterus, according to Meckel, is from seven to eight drachms ; but after child-bearing it amounts to an ounce and a half. 81. The Os Uteri, or Os Tincce, is situated at the lower part of the cervix, varying in form in different individuals ; in many it is a transverse chink or slit, in others a circular opening, and in some triangular, resem- bling a leech-bite, especially in those who have borne many children. It is generally about the size of a goose-quill, or rather smaller. The Canal of the Cervix is from half to three-quarters of an inch long, leading from the os uteri; it first widens and then contracts again where it enters the cavity of the uterus, marking the os uteri internum, as it has been called. Between the os uteri externum and internum the mucous mem- brane is curiously disposed in rugae, branching out from a central line ; this has been called the arbor vitas. The internal surface of this canal is thickly studded with mucous follicles, called glandulce Nabothi, and which, after impregnation, secrete a thick mucus which blocks up the canal. The cavity of the uterus is of a triangular shape, the base being upwards ; its dimensions have already been given. 82. Much difference of opinion has existed, and many discussions have taken place, as to the structures which compose the uterus ; though of late years the opinions of authors are more harmonious. It possesses three dis- tinct tunics: I. We have already seen (§ 77) that it is covered anteriorly and posteriorly by peritoneum, which is reflected laterally to the sides of the pelvis, near the sacro-iliac synchondroses, forming the broad ligaments of the uterus, or the alee vespertilionis, on each side, containing the fallopian tubes, ovaries, and round ligaments. From their attachment to the pelvis they may, perhaps, serve as supports to the uterus, at least before conception. This serous covering is identical with the lining of the abdomen. 83. II. The Middle Coat of the Uterus is by some asserted, and by others denied, to be muscular; but this really appears to me little more than a dis- pute about the name, for those who deny its muscularity admit that it per- forms the functions of a muscle. Mr. Rainey has examined very minutely with the microscope the middle coat of the uterus, and finds that it is made" up of "fusiform nucleated fibres, contained in a matrix of exceedingly cohe- rent granular matter. The average breadth of one of these fibres, at its dilated or nucleated part, is about To^th of an inch. Their length cannot be ascertained with certainty, as it is impossible to estimate the degree of curtailment which they suffer in being separated from the granular matrix in which they lie embedded."1 The fibres belong to the class of non-striated or involuntary muscles. This middle coat differs in color from ordinary muscle, being yellowish, with a faint tinge of red, like the middle coat of arteries, and it is much more dense than muscular tissue. It consists of fibrous structure, though it is not easy to trace the course of the fibres in the unimpregnated womb; however, when the uterus is enlarged from im- pregnation or other causes, it can readily be done, and they may be divided into several sets. The superficial set are very irregular, interlacing with each other in every direction, though with a general tendency from the fundus towards the cervix; but some regularity is observable in the deeper sets; for instance, there is a circular arrangement around the orifice of each fallopian tube, and at the os uteri; a layer diverging from the middle line anteriorly and posteriorly, and perpendicular bauds descending to the os uteri. Among these more regular layers there are irregular fibres inter- spersed. From the middle coat fibres are sent off to the fallopian tubes and round ligaments. 84. 111. The Mucous Coat.—A considerable number of distinguished 1 Philosophical Trans.: 1850. Part ii., p. 519. 70 INTERNAL ORGANS OF GENERATION. foreign writers, among whom we find Morgagni, Assoguidi, Chaussier, and Morcau, have denied the existence of any lining membrane in the uterus, from the difficulty of separating and demonstrating it. I cannot understand this ; for it has always appeared to me very evident, even in a state of health and quiescence, but still more when the seat of disease or pregnancy. Others, as Dewees, Boivin and Duges, etc., do not question the presence of a lining membrane, but contend that it is not mucous ; and apparently for the sole reason that one of its functions (menstruation) is not a function of mucous membranes. This objection, however, is refuted by the fact that other mucous membranes do occasionally secrete a fluid apparently identical with the menses (vicarious menstruation); and we may add, that the uterine membrane presents the anatomical and histological characteristics of mucous membrane ; that it secretes mucus, undistinguishable from that of the vagina. Its pathology also is that of mucous membranes. For these reasons I have no doubt that the uterus is lined by mucous membrane, continued from the mucous membrane of the vagina after it covers the cervix uteri. Dr. Tyler Smith has recently published some very interesting and original microscopic researches on the structure of the mucous membrane covering the cervix and lining its canal, of which I shall give a brief abstract, especially on account of their bearing upon disease. The external mucous membrane consists of epithelium, basement membrane, fibrous tissue, bloodvessels, and nerves, like other mucous membranes. The special peculiarities are as follows : The epithelial layer is tessellated or squamous, and so arranged as to form a membrane of considerable thick- ness. Immediately beneath, the basement membrane covers the villi; each villus contains a looped bloodvessel, passing to the end of the villus, and returning to its base, where it inosculates with the bloodvessels of the neigh- boring villi. The villi are everywhere covered by pavement epithelium, which renders the external surface smooth. The points of the villi are nipple- shaped, with a depression in the centre. From Dr. Smith's researches, it appears doubtful if the external surface possesses any mucous or glandular follicles. Just within the os uteri a small extent of smooth surface is found, with villi covered by cylinder epithelium, like those of the intestines ; these villi being three or four times larger than those of the external surface, and containing one or two looped vessels. Underneath the villi of this part, and externally, a dense fibrous and vascular tissue is found, mixed with involuntary muscular fibres and nerve fibres. Higher up, we find the pecu- liar structure of the cervical canal. It exhibits four columns of oblique, curved, or transverse rugae, with four longitudinal grooves or ridges. Under the microscope, these rugae, and the fosse between, are found to be divided and subdivided many times, and these rugae, and even the secondary septa, are covered with mucous follicles so numerously, that Dr. Smith calculates that in a well-developed virgin cervix uteri there must be 10,000 mucous follicles. The villi of this portion of the canal are numerous, and covered with cylinder epithelium. Thus we have a provision made for a very large extent of glandular secreting surface; in fact, Dr. Smith calls the cervix "an open gland," and he regards this as the principal seat of leucorrhoea. The normal mucus secreted by this portion is very viscid, and almost transparent. It adheres to the crypts and rugae, and fills the canal of the cervix. It has an alkaline reaction, whilst that from the cervix externally is acid. It con- sists of minute corpuscles, caudate corpuscles, minute oil globules, and occa- sionally dentated epithelium, in a thick, tenacious plasma ; and its use, Dr. Smith thinks, is to close the canal of the cervix, and probably to afford a suitable medium for the passage of the spermatozoa into the uterine cavity.1 1 Med.-Chir. Trans., vol. xxxv., p. -ill. INTERNAL ORGANS OF GENERATION. 71 85. The Arteries of the uterus are four in number, furnished by the aorta, the hypogastric, and emulgent arteries. The two superior — the spermatic — arise from the aorta or emulgent arteries, and descend along the sides of the womb in a serpentine course; they are distributed to the upper part of the uterus, to the fallopian tubes and ovaries. The two inferior — the ute- rine arteries — given off by the hypogastric arteries, run along the sides of the uterus, to within a short distance of the lips, then divide, and supply the cervix and upper part of the vagina. The spermatic and uterine arte- ries anastomose freely with each other. 86. The Veins are more numerous than the arteries, are capable of greater distension, and lie superior to their corresponding arterial branches. They possess no valves, and, like the arteries, are of small size so long as the genital system is quiescent, but increase very greatly during pregnancy, when they form what have been called the uterine sinuses. 87. Some uncertainty has existed as to the Nerves of the uterus; but the researches of Drs. R. Lee, Robin, Snow Beck, and Hirschfeld, added to those of their predecessors, have rendered our information more complete. They arise from the aortic plexus, and from the hypogastric nerves and plexus, being a mixture of spinal and sympathetic nerves. I shall take the liberty of quoting Dr. Lee's account of a dissection of these nerves in the unimpregnated uterus : " The aortic plexus, the hypogastric nerves and plexuses, were all much smaller than in any of the gravid uteri I had pre- viously seen. From the fore and middle part of the left hypogastric plexus a small branch passed down on the inside of the ureter, to the trunk of the uterine artery and veins, which was surrounded by a plexus of nerves, as in the gravid uteri before examined. From this, branches passed upwards to the fundus uteri, and a communication between these and the spermatic nerves was quite evident. From the left hypogastric plexus, numerous branches passed also directly into the uterus, without entering the ganglia at the cervix, which ramified on the peritoneum behind, and on the muscular coat. Branches from the posterior part of the hypogastric plexus communicated with some branches of the sacral nerves behind the ganglion. The trunk of the left hypogastric nerve was easily traced through the plexus to the upper part of the ganglion, which was remarkably large and distinct, and consisted of white and grey matter. Into the posterior part of the ganglion the third sacral nerve sent numerous branches. From the anterior margin of the ganglion a broad band of white and grey nerves passed round the outer surface of the ureter, and, after uniting with a similar band on the inside, sent branches to the plexus surrounding the uterine artery and vein, and also branches to the anterior surface of the uterus. Large flat nerves were seen passing off from the anterior border of the ganglion, to the bladder and vagina, and from its inferior and posterior borders to the vagina and rectum. A great number of nerves likewise passed off from the inner surface of the ganglion into the cervix uteri. The nerves sent off from the ganglion were both larger and more numerous than those which entered it. A great web of nerves was seen under the peritoneum, both on the anterior and posterior surface of the uterus, intimately connected with the nerves sent off by the ganglion and hypogastric plexus."1 88. The Lymphatics are very numerous, though very small, in the unim- pregnated uterus. The most numerous set of these vessels runs from the upper part of the body and cervix of the womb along with the spermatic vessels, and with those from the ovary, in front of the psoas muscles, and terminates in the glands, in front of the aorta, vena cava, and lumbar vertebras. Another set accompanies the uterine artery, and issues with the round liga- 1 The Anatomy of the Nerves of the Uterus, by Robert Lee, M. D, etc., p. 7. 7 2 INTERNAL ORGANS OF GENERATION. ment through the inguinal ring. A third set joins the lymphatics of the vagina, and enters the hypogastric plexus. 89. The lower portion of the uterus is within the reach of a vaginal ex- amination, so that we can estimate its size, temperature, integrity, mobility, sensibility, etc. ; and by the use of the speculum we are able to ascertain its color, the state of its surface, and, if necessarjr, to apply local remedies. Further information as to its condition may be obtained in many cases by abdominal manipulation ; and, in the case of enlargements, by the applica- tion of the stethoscope. An examination "per rectum" is of value in cer- tain diseases of the uterus, and especially of the ovaries. 90. Abnormal deviations. — 1. The uterus maybe altogether wanting; several such cases are on record.1 2. The canal of the cervix may be ex- tremely narrow throughout, or it may be the seat of stricture. 3. It may be closed, either by the union of its sides, or by the mucous membrane being continued over the os uteri. 4. The uterus may be malformed ; and it is remarkable that these malformations, which are owing to an arrest of de- velopment, appear to reproduce the analogous organs of lower classes of animals ; for instance, the double uterus, (fig. 34) resembles in some degree the tubular oviduct of birds, it opens by two ora uteri into the vagina; or both the uteri and vagina may be distinct.2 Fig. 34. Fig. 35. Uterus Bicollis. The uterus bicollis (fig. 35) exhibits#two bodies with but one os uteri, and resembles the organ of some rodentia and carnivora. Again, the junction of the cornua may take place higher up, constituting the uterus bicorporeus ; here the lowest part of the body of the uterus is single, and the upper double. In the uterus biangularis the body of the womb is tolerably well formed, and terminating in cornua, as in the monkey tribes. Several intermediate stages of this progress, from the lowest to the highest form of a single uterus, have been noticed, but I shall only add two more illustrations; one when the uterus is double, opening by two orifices into two separate vaginae (fig. 36), and another when the uterus was separated into two cavities by a septum, but having only a common opening inferiorly (fig. 37.) These congenital malformations are by no means very rare ; Dr. Cassan collected forty-one examples, and many others have since been recorded. 1 Kussmaul has published a volume devoted to these and analogous deviations- see also cases by Dubois, Lancet, Dec. 8, 1855. 2 Amer. Journ. of Med. Science, p. 331. Oct. 1852. INTERNAL ORGANS OF GENERATION. 73 The effect of the three first abnormal deviations will be either the absence of menstruation, and consequent sterility, or inefficient or painful menstrua- tion. The deviations from arrest of development may exert no injurious Fig. 36. Fig. 37. Double Uterus. Double Uterus. influence upon menstruation or conception, but they have been adduced to explain the phenomenon of superfcetation, as it is pretty certain that a double conception may take place ; and, when it is single, the vacant cavity is lined by decidua. In addition, the uterus is the seat of many forms of disease. [A singular instance of malformation of the uterus is recorded by M. Lecluyse. The subject of it "was a small female, who had previously been twice confined with an arm presentation. The occurrence of the same acci- dent for the third time caused the accoucheur to make a minute examination, in order, if possible, to find an explanation of so unusual a circumstance. The result of the investigation was, the womb, instead of being of the natural pyriform shape, had its greatest diameter in a transverse direction; so that the long axis of the elliptic form which the foetus occupies in utero was horizontal. This anomaly was thought by M. Lecluv»e to account for the three consecutive arm presentations."1] 91. The Fallopian Tubes are two cylindrical canals, about four inches long, proceeding from the upper angles of the uterus. They are contained in the superior and lateral folds of the broad ligaments. Internally, they open obliquely into the uterus, at which point the canal is narrow ; it after- wards expands, and then again contracts towards its external termination, where it is open to the abdomen. Externally, the tubes are of equal thick- ness for about three inches and a half, when they expand, and terminate in a fringed process, called the fimbriae, or morsus diaboli, which is applied to the qvary during impregnation. The tubes are covered externally by peri- toneum, beneath which is their proper tissue, with some circular and longi- tudinal fibres, derived from the middle coat of the uterus. Internally, they are lined by mucous membrane, disposed in longitudinal folds, the villi of which are highly developed after impregnation. The tubes share in the vessels and nerves by which the ovaries are supplied. Their function is the transmission of spermatozoa to the ovary in the first instance, and afterwards of the impregnated ovum to the uterus ; in fact, they are the excretory ducts of the ovary. 92. Abnormal deviations. —The tubes, one or both, may be impervious, from disease, or as a congenital malformation. The closure of both of course entails sterility. They are also subject to inflammation and its consequences, and to malignant diseases. 1 [Llmiking's Abstract, p. 240, American edition, from Journal de Chirurgie, Mars, 1845.] 74 internal organs of generation. 93. I have already stated that the round ligaments are formed by fibres, derived from the middle coat of the uterus. ]\Ir. (1. Rainey asserts, that they are composed of striated fibres, and are of the nature of voluntary muscular fibre, and that their function is in some way connected with the act of coition.1 M. Rau has also published an interesting paper on this subject.2 He conceives that for two-thirds of their course, these fibres are a continuation of the muscular fibres, both superficial and middle, of the uterus. He admits the correctness of Rosenberger's description of the courses of the three bundles of muscular fibres that form part of the liga- ment while in the inguinal canal. Some of the fibres proceed to the hori- zontal ramus and symphysis pubis. M. Rau thinks that the round ligaments exercise no function during the unimpregnated state of the womb ; but, that towards the end of pregnancy, they contribute to give a forward tendency to the fundus uteri, and especially during the early part of labor. 94. The Ovaries are the essential organs of generation in the female; they are the " analogues" of the testes in the male, and up to the time of Steno, were called "lesfes mulieris." They are situated on each side of the uterus, to which they are attached by the posterior duplicature of the broad ligaments, hence called the ligamentum ovarii. They are small oval flattened bodies, broader at the end distant from the womb ; about an inch and a quarter or an inch and a half long, from half to five-eighths of an inch at their greatest breadth, and a quarter of an inch thick. They hang loosely in the pelvis, beneath and somewhat behind the fimbriated extremity of the fallopian tubes. Smooth externally in virgins, they become wrinkled in old age. Their external covering is the serous membrane, constituting the broad ligament, in which they are completely enveloped, except at the part where the vessels enter. Underneath the peritoneum they possess a proper fibrous coat of dense structure, called the Tunica Albuginea. 95. When laid open, we find their internal structure to consist of cellular tissue, permeated by numerous blood-vessels derived from the spermatic Fig. 38. Section of Ovary, Graafian Vesicles. arteries, running tortuously across the ovaries in nearly parallel lines; and by nerves. Embedded in the cellular parenchyma of the organ, in the adult, a number (from 10 to 20) of small vesicles may be observed, which, though noticed by Fallopius and Vesalius, were more particularly described by De Graaf, and called after him, Graafian Vesicles. They vary somewhat in number ; and in size, from that of the head of a small pin to that of a small pea. 96. There is some difference of opinion as to the age at which these vesi- cles are developed : some say, about the period of puberty ; others, among whom is Dr. Rigby, state that they make their appearance about the seventh 1 Philosophical Transactions. 1850. Part II. p. 515. - Zeitschrift fur Geburtslmlfe. July, 1851. internal organs of generation. 75 year; but according to M. Negrier, in his "Becherches sur les Ovairesv they are to be found much earlier. He states that at birth the texture of the ovarian parenchyma is homogeneous, but that in the course of a year, an uncertain number of miliary granulations may be observed; after a short time, these granulations are surrounded by an opaque zone, and a small vesicular globule, whose walls are formed by this zone, is annexed to the granule. This globule contains a vesicle (the Graafian) formed by two membranes, concentric and in contact. At the age often or twelve, certain of the vesicles increase in size, and cease to be transparent, because of the interposition between the two membranes of a grey pulpy matter. At the same time, the vesicles go on increasing more rapidly than the cavity in the ovarian tissue in which they are lodged, which gives to them a compressed and slightly corrugated appearance. The grey pulp of the vesicle is gradu- ally changed to a yellow color, marking the epoch of puberty. The vesicles are connected to the part in which they are embedded by cellular filaments, which become weaker in proportion to the age of the child. During early life the vesicles occupy the deeper parts of the ovary, but gradually ap- proach the circumference ; and, at the time when the pulp becomes yellow, some of them are in contact with the envelope of the ovary. I have con- densed this account from M. Negrier, but am not able to decide upon its correctness. 97- So much for the development of the Graafian vesicles: upon their intimate structure very great light has been thrown of late years by the labors of Baer, Rathke, Purkinje, Valentin, Wagner, etc., in Germany ; of Prevost, Dumas, Coste, etc., in France ; and of Allan Thompson, Wharton Jones, and Martin Barry, etc., in England. From their writings the follow- ing description has been gathered, which I believe to be correct, with the exception of a few minor points not yet settled. The Graafian vesicle consists of an external and an internal membrane : the former (tunic of the ovisac, Barry) is extremely vascular; the latter (ovisac, Barry) is smooth and velvety, deriving its vessels from the former. The cavity enclosed by these membranes is far from being filled by the ovum ; it contains, besides, a whitish or yellowish albuminous mass which consists chiefly of granules, from ^00th to 30oth part of a line in diameter, connected together by a tenacious fluid, and forming the tunica granulosa of Bischoff, Wagner, and Barry. Its density is unequal; towards some part of the periphery of the vesicle these granules are accumulated in a disk-like form, making a slight prominence in which is a depression. The disk and prominence are termed by Baer the discus proligerus and cumulus. Dr. Barry has also observed certain granular cords, resembling the chalazae in the egg in appearance and function, and which he has called the retinacula. In the depression in the cumulus is lodged the ovum (ovulum, Baer), the discovery of which by Professor v. Baer explained satisfactorily the small size of the ova observed in the fallopian tube by De Graaf, Cruik- shank, and Haighton, compared with the Graafian vesicle in the ovary. The ovum is surrounded by a thick white ring, which has been called zona pellu- cida, but which Valentin and Wagner conceive to be a membrane; internal to which we find a granular layer, the vitellus, the larger granules of which are superficial and compact, whilst internally it is a clear albuminous fluid, almost devoid of granules. Embedded in this vitellus, but nearer to its circumference than centre is the germinal vesicle, or vesicle of Purkinje, a very important part of the ovum. It was first discovered in eggs by Purkinje, but in mammalia by Wharton Jones, Coste, Valentin, and Bernhardt. It appears like a clear ring of very small size, measuring in man and mammalia at most g^th part of a line in diameter. Upon the surface of the germinal vesicle a dark spot 76 internal organs of generation. was discovered by Wagner, and called by him macula germinatira. " It is almost always seen as a simple rounded body from 3Jjotn to 3