ILLUSTRATIONS xvii 



Fia. PAfiE 



124. Section of a portion of the necrotic zone of the decidua, &c. . 471 



1 25. Section tlirough embryonic region of ovum .... 472 



126. Condition of the glands at the beginning of pregnancy in Man 473 



127. Median longitudinal section of embryo of 2 mm. . . . 475 



128. Diagram of stage in development of human placenta . 476 



129. Fat in a villus of human placenta . . . . . . 479 



130. Iron granules in a villus of the placenta in Man . . . 480 



131. The first stage in the revolution of the equine foetus . . 533 



132. The foal in the normal position for delivery .... 536 



133. Virginal external os (human) ....... 550 



134. Parous external os (human) .... . . ib. 



135. Section of mammary gland of woman ..... 556 



136. Section of mammary gland (human) during lactation . . 557 



137. Section of mammary gland (human) in full activity . . . 558 

 13S. Section through an alveolus with fat drops in cells . . . 559 



139. Section of developing mammary gland of horse . . . 574 



140. Section of mammary gland (human) showing developing 



alveoli .......... 575 



141 to 147. Diagrams from Minot's Problem, of Age, Growth, 



and Death 663-9 



148. Section through ovary of woman of fifty-six showing degenera- 



tion of follicles, &c 673 



149. Section through uterine mucous membrane of woman of sixty . 674 



150. Section through vaginal mucous membrane of woman of 



sixty-one .......... 675 



151. Group of nerve cells from the first cervical ganglion of a child at 



birth 677 



152. Group of nerve cells from the first cervical ganglion of a man 



of ninety-two ......... 678 



153. Land tortoise aged at least eighty-six belonging to M. Blie 



Metchnikoff 680 



15^ Lonk sheep aged eighteen years, with her last lamb . . 681 



