318 



THE MAMMALIAN EMBRYO. 



FiQ. 99. 

 A. 



[chap. 



B. 



Views or the Blastodbemic Vesicle of a Kabuit on the 

 Seventh Day withoot the Zona. A. from above, B. 

 from the side. (From Kolliker.) 



ag. embryonic area ; ge. boundary of the hypoblast. 



