44 



The Rot in Sheep. 



From the " germ stock " a short duct arises which leads 

 directly upwards into the uterus, e e. Within this duct the ova 

 are first to be detected — a fact which we think of some import- 

 ance in determining the use of the " germ stock," about which 



Fig. 7. 



Generative Organs of the Distoma. Magnified. 



authorities differ. The ova are colourless before they reach the 

 uterus, and have in this short duct exceedingly thin cases or 



