THE ANNEXES OF THE FCETUS 17 



villi. Each villus consists of a thin connective tissue layer 



Fig. 8.— Chorion Papillas. (Mag. 57.) 

 O, Blood vessel with red blood corpuscles; b, epithelium ; c, papillae. 



Fig. 9.— Chorion Papilla. (Mag. 1020.) 

 a, Epithelium, with capillary vessel; fo, white, transparent, bright strip, possibly 

 uterine milk. 



and capillary layer, and externally of a layer of pavement 



