84 



DR. J. W. JENKINSON ON THE 



[Feb. 6, 



Moreover, it occurs in the trophoblast, in the connective-tissne 

 cells of the chorion, and in the allantoic epithelium. It appears to 

 be absorbed mainly by the extra-potyledonary trophoblast, if not 

 entirely so. I have not found it in the villi. 



Text-fig. 31. 





^-^-"W'--^ - 







i;v;K#;:?Si 



■iiifi^mjs^ 7 





;7SS^--;--.-^- 





a and 6. Amniotic epithelial thickening of a Cow of 4 months. Notice the abundant 

 glycogenic vacuolation. a, the superticial ; 6, the deep strata. 



c. Glycogenic epithelium of the allantoic stalk. (Length of foetus 30 cm., 5th month 



according to Kolster.) 



d, e. Glycogenic connective-tissue cells in the walls of one of the umbilical blood- 



vessels of the same foetus as the last. 



The only other case, which I am aware of, in which glycogen 

 has been found in the uterine epithelium is the human uterus. 

 Langhans has described it here in the cells of the superficial 

 epithelium and of the glands. It occurs, of course, in abundance 



