CHANGES IN THE OVARY 



6 



115 





Fig. 20. — Section through ovary of adult dog. (From Waldeyer.) 



a, germinal epithelium ; b, remains of egg tubes"; c, small follicles ; d, more 

 advanced follicle ; e, discus proligerns and ovum ; /, second ovum (a rare 

 occurrence) ; (j, theoa externa of follicle ; A, theca interna ; i, membrana 

 granulosa ; le, degenerate follicle ; I, blood - vessels ; m, tubes of 

 parovarium ; y, involuted germinal epithelium ; a, transition from 

 germinal to peritoneal epithelium. 



failed to recognise their connection with the germinal epithehum. 

 Later observers, however, did not confirm the tubular origin of 

 the ovary. 



To Waldeyer belongs the credit of first recognising the true 

 nature and significance of the process of egg formation, an 



