CONTENTS. 15 



. PAGE 



C. The Female Eeproductive Organs 449 



The ovum, 449 — Maturation of the ovum, 451 — The ovary and ovulation, 454 — The 



Fallopian tubes, 456 — The uterus, 456 — The act of menstruation, 157 — Comparative 

 physiology of menstruation, 459 — Theories of menstruation, 460— -The vagina, 462 — 

 The vulva and its parts, 462 — The mammary glands, 462 — The internal secretion of 

 the ovaries, 462. 



D. The Reproductive Process 463 



The act of copulation, 463 — Locomotion of the spermatozoa, 465 — Fertilization of 



the ovum, 466 — Segmentation of the ovum, 467 — Polyspermy, 471 — The decidua 

 graviditatis, 471 — The fetal membranes, 472 — The placenta, 474 — Nutrition of the 

 embryo, 475 — Physiological effects of pregnancy on the mother, 477 — The duration of 

 gestation, 478 — Parturition, 479 — First stage of labor, 479 — Second stage of labor, 480 

 — Third stage of labor, 480 — Physiology of labor, 481 — Multiple conceptions, 482 — 

 The determination of sex, 483. 



E. Epochs in the Physiological Life of the Individual 486 



Growth of the cells, the tissues, and the organs, 486 — Growth of the body before 



birth, 486— Growth of the body after birth, 487— The condition of puberty, 489— The 

 Climacteric, 490 — Senescence, 490 — Death, 491 — Theory of death, 492. 



F. Heredity 494 



The facts of inheritance, 494 — Latent characters, atavism or reversion, 495 — Re- 

 generation. 496 — The inheritance of acquired characters, 496 — The inheritance of dis- 

 ease, 498 — Theoriesof heredity, 498- < Jcmi-plasm, 499 — Variation, 500 — Darwin's theory 



of pangenesis, 501 — Weismann's theory of heredity, 502 — Theory of epigenesis, 504. 



