LIST OF ILLUSTRATIONS 



FIG. 



1. Ovary of mouse just before puberty 



2. Ovary of dog ...... 



3. Part of corpus luteum of pregnancy of mouse 



4. Human corpus luteum 



5. Human ovary . 



6. Ovary of rabbit 



7. Fallopian tube of mouse 



8. Clitoris of mouse 



9. Lobule of mammary gland of cow . 



10. Udder of cow ...... 



11. Ovary of mouse at three weeks old . 



12. Uterus of mouse at three weeks old 



13. Ovary of senile mouse .... 



14. Diagram of oestrous cycle in the opossum 



15. Prooestrous uterine mucosa of dog . 



16. Uterine mucosa of dog at the end of pseudo-pregnancy 



17. Diagram of ovarian cycle in non-pregnant cow 



18. Diagram of ovarian cycle in non-pregnant sow 



19. Ovary of mouse (Pasini stain) showing two sets of corpora 



lutea .... 



20. Uterus of mouse 



21. Uterus of mouse during dioestrus 



22. Uterus of mouse during oestrus 



23. \^agina of mouse duri.ng dioestrus 



24. \^agina of mouse during oestrus 



25. Vaginal smears of the mouse during the oestrous cycle 



26. Uterus of rabbit in oestrus 



5 



7 

 8 



9 



10 

 II 



13 

 15 

 16 



17 



19 



19 

 21 



29 



32 



33 



38 

 42 



45 

 46 



47 

 48 



49 

 50 



51 

 53 



Xlll 



