254 



PLACENTA OF THE UNGULATA. 



epithelium are carried away when the foetal villi are separated from the 

 uterus. The glands of the uterus open in the intervals between the 

 cotyledons. The character of the cotyledons differs greatly in different 

 types. The maternal parts are cup-shaped in the sheep, and mushroom- 

 shaped in the cow. There are from 60 100 in the cow and sheep, but 



FIG. 157. UTERUS OF A Cow IN THE MIDDLE OF PREGNANCY LAID OPEN. 



(From Huxley after Colin.) 

 V. vagina; U. uterus; Ch. chorion; C 1 . uterine cotyledons; C-. foetal cotyledons. 



u 



FIG. 1 58. COTYLEDON OF A Cow, THE FCETAL AND MATERNAL PARTS HALF 

 SEPARATED. (From Huxley after Colin.) 



u. uterus; Ch. chorion; C 1 . maternal part of cotyledon ; C-. fcetal part. 



