ILLUSTRATIONS 



PART I 



FACING PAGE 



Figure 1. Section of the human ovary, showing ripening of the 



Graafian follicle 22 



Figure 2. Section of the human ovary, showing a ripe Graafian 



follicle 23 



Figure 3. Section of the human ovary, showing origin of 



lutein cells .... . .24 



Figure 4. Section of the ovary of Ornithorhynchus ... 25 



Figure 5. Section of the ovary of Ornilhorhynchus ... 26 



Figure 6. Section of the ovary of a marsupial .... 27 



Figure 7 A. Corpus luteum in the ovary of the cow. 



B. Corpus luteum in the ovary of the human subject . 28 



Figure 8. Section of the corpus luteum of the cow ... 29 



Figure 9. Section of the corpus luteum of the human subject . 30 

 Figure 10. Section of the adult human ovary . . .31 



Figure 11. Section of the ovary of the adult rabbit ... 33 



Figure 12. Section of the ovary of the young rabbit ... 34 



Figure 13. Section of the ovary of the normal cat ... 35 

 Figure 14. Section of the uterus of the normal cat . . .36 



Figure 15. Section of the uterus of the cat after oophorectomy . 37 



Figure 16. Section of the thyroid of the normal rabbit . . 38 



Figure 17. Section of the thyroid of the rabbit after oophorectomy 39 

 Figure 18. Section of the normal pars anterior of the pituitary 



in the human subject ...... 43 



Figure 19. Section of the pituitary of the cat after oophorectomy . 45 



Figure 20. Section of the uterus of the normal adult rabbit . 46 

 Figure 21. Section of the uterus of the rabbit after ovarian 



grafting 47 



Figure 22. Section of a graft of the rabbit's ovary ... 48 



Figure 23. Section of a graft of the rabbit's ovary ... 49 



Figure 24. Section of the ovary of the cat after thyroidectomy . 53 



Figure 25. Section of the uterus of the cat after thyroidectomy . 54 



Figure 26. Section of the suprarenal of the cat after thyroidectomy 55 



