xviii CONTENTS. 



BOOK IV. 



THE TISSUES AND MECHANISMS OF KEPBODUCTION. 



PAGE 



923. The general features of reproduction 1487 



CHAPTER I. 



IMPREGNATION. 



SECTION I. 



ON SOME STRUCTURAL FEATURES OF THE FEMALE ORGANS. 



924. The general structure of the uterus 1489 



925. The minute structure of the uterus 1490 



926. The structure of the vagina 1491 



927. The blood vessels and lymphatics of the uterus .... 1491 



The Ovary. 



928. The early history of the ovary 1491 



929. The general structure of the ovary 1492 



930. The structure of the Graaffian follicles 1493 



931. The features of a ripe ovum 1494 



932. The Graaffian follicle nourishes the ovum 1495 



933. The escape of the ovum 1496 



934. The changes in the ovary after the escape of the ovum ; corpus 



luteum 1496 



SECTION II. 



MENSTRUATION. 



935. The transference of the ovum from the ovary to the uterus . . 1498 

 936. The changes in the uterine mucous membrane .... 1499 

 937. The causation of menstruation 1500 



SECTION III. 

 THE MALE ORGANS. 



938. The early history of the testis 1502 



939. The general structure of the testis and epididymis .... 1502 

 940. The seminal tubules ; the spermatozoa 1504 



