416 



H. H. Newman and J. T. Patterson. 



anrac. 



-- am 



13 



JIIG. 13. A detailed drawing of embryo I (fig. 12) as seen from the dorsal aspect, 

 that is, as viewed from the inside of the vesicle, am., amnion; a.mc.c., connecting 

 canals of the amnion; p.am., posterior amniotic process; b.s., belly-stalk; tr., 

 Trager. X 25. 



