7-26 



ANATOMY OF VERTEBRATES. 



surface convex and tubercular. The navel-string, one inch in 

 length, expands, after reflection of the amnios, and is lost in the 



572 



Gravid uterus, A, multiparous ; D, uniparous, Mammal ; c, early uterine ovum, cccvm. 



allantois, which reaches the circumference of the placenta : folds 

 of the allantois are reflected from the main trunks of the allantoic 



