202 



SPECIMENS OF PINNIPEDIA. 



springs from the corpus is between 4 and 5 inches. 

 A section was made through the wall of the left 

 cornu ; the muscular coat is thick and tough and 

 contained numerous vessels ; the mucous lining is 

 distinct with strong folds, the cavity is occupied with 

 inspissated mucus. The Fallopian tube is much con- 

 voluted, and in the peritoneal fold immediately below 

 it the ovary, the size of a large walnut, is situated. 

 A section was made through the substance of the 

 ovary, and many Graafian follicles were exposed. 

 The vagina had been cut across close to the uterus^ 

 and the cervix and os uteri externum are displayed. 

 From the Scottish National Antarctic Expedition. 



Donor — Dr W. S. Bruce. 



4. Uterus, gravid, with a tVetus in the left cornu, which had 

 been detached from the corpus uteri ; the cornu is 

 4^ inches long. A portion of the wall had been 

 removed and the cavity and contents exposed. The 

 cavity is 3| inches long and 1^ inch in greatest 

 width. It communicated at one end with the canal 

 in the body of the uterus, and by the other with the 

 Fallopian tube. A f<etus was exposed enveloped by 

 the amnion ; it is 3 inches long and extended ; the 

 head points to the opening into the body of the 

 uterus, the tail is close to the Fallopian tube. The 

 chorion occupies the cavity close to the uterine wall 

 and stretches between the two openings ; a limited 

 extent of the free surface at the poles of the chorion 

 near these openings is free, smooth, and non-villous ; 

 the intermediate part is thickened, fused with the 

 uterine mucous membrane, and forms a zonary 



X '^^ x.. 





