426 



Diseases of the Genital Organs 



sterile. They are to be differentiated, so far as my collection indi- 

 cates, by the fact that in the cow hydrosalpinx usually involves the 

 entire length of the oviduct and presents the other characters de- 

 scribed under that heading. The parovarian cysts are usually small 

 - — much smaller than the hydrosalpinx generally — and can be picked 

 up in the mesosalpinx. Careful palpation should recognize the 

 healthy tube not far away, enabling one to differentiate the two 

 structures. 



B. Tubal Infections' 



In cattle the diseases of the oviducts constitute a very fer- 

 tile cause of sterility and play an unknown role in the oc- 

 currence of abortion. The oviducts constitute highly com- 



I'lG. 138 — Cross Section of Normal Oviduct Near the Ampulla. 



Showing the Number and Complexity of tlae Mucous Folds. 



plex anatomo-physiologic barriers between the peritoneal 

 and uterine cavities. Technically, the peritoneal cavity of 

 the female communicates with the exterior through the 



iPor the normal and pathologic histology and for the bacteriology 

 of the oviducts, I am indebted chiefiy to the work of Dr. Herbert L. 

 Gilman, graduate student, and to my colleague, Dr. C. M. Carpenter. 



