CHANGES IN THE OVARY 



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



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

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

 occurrence); </, theca externa of follicle ; h, theca interna ; i, membrana 

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

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

 germinal to peritoneal epithelium. 



failed to recognise their connection with the germinal epithelium. 

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

 the ovary. 



^o Waldeyer belongs the credit of first recognising the true 

 nature and significance of the process of egg formation, an 



