448 Diseases of the Geniial Organs 



3. Hydrosalpinx and Dropsy of the Pavilion of the 



Oviduct 



Hydrosalpinx, which is comparatively common in cattle, 

 constitutes one of the common causes of incurable sterility 

 in heifers. It is apparently as common in heifers which 

 have never conceived as it is in cows. The period of inva- 

 sion of the disease in heifers is not definitely known. Prob- 

 ably it occurs during the nursery period and passes unob- 

 served until breeding age, when it causes sterility, and is 

 then recognized by clinical examination. The disease also 

 arises during pregnancy, although how frequently can not 



Fig. 159 — Cystic Pavilion of the Oviduct. 



O, Right ovary ; O' , left ovary ; i/C, cornua ; C", cystic pavilion 

 adherent to ovary. 



