475 



and modes of physiological activity which seem adapted to the safe 



transfer of the ripe ova from the ovary to the mouth of the oviduct. 



In the course of the present anatomical study it has been found 



that the ovary of a laying hen is practically walled ofif by peritoneal 



Figure 1. A photograph showing the musculature of the medial half of the 

 caudal end of the isthmus and the portions of the dorsal and ventral ligaments which 

 attach to it. 



surfaces from the rest of the abdominal cavity. The discharged ova 

 are by mechanical necessity from the normal anatomical relations 

 brought close to the mouth of the oviduct. 



