ILLUSTRATIONS 

 PART I 



FACING PAGE 



Section of the human ovary, showing ripening of the 



Graafian follicle 22 



Section of the human ovary, showing a ripe Graafian 



follicle 23 



Section of the human ovary, showing origin of 



lutein cells .... ... 24 



Section of the ovary of Ornithorhynchus ... 25 



Section of the ovary of Ornithorhynchus ... 26 



Section of the ovary of a marsupial .... 27 



Corpus luteum in the ovary of the cow. 



Corpus luteum in the ovary of the human subject . 28 



Section of the corpus luteum of the cow ... 29 



Section of the corpus luteum of the human subject . 30 



Section of the adult human ovary . . . .31 



Section of the ovary of the adult rabbit ... 33 



Section of the ovary of the young rabbit ... 34 



Section of the ovary of the normal cat ... 35 



Section of the uterus of the normal cat . . . 36 



Section of the uterus of the cat after oophorectomy . 37 



Section of the thyroid of the normal rabbit . . 38 



Section of the thyroid of the rabbit after oophorectomy 39 

 Section of the normal pars anterior of the pituitary 



in the human subject ,43 



Section of the pituitary of the cat after oophorectomy . 45 



Section of the uterus of the normal adult rabbit . 46 

 Section of the uterus of the rabbit after ovarian 



grafting . . . . . . . .47 



Section of a graft of the rabbit's ovary ... 48 



Section of a graft of the rabbit's ovary ... 49 



Section of the ovary of the cat after thyroidectomy . 53 



Section of the uterus of the cat after thyroidectomy . 54 



Section of the suprarenal of the cat after thyroidectomy 55 



