72 

 oris of central periblast 1... in types II. 



- " I . above . In Fi ... ) 



i-e stages, there is ! - 



ation for the periblast w] - ivei -a that 



fro:, it there could ever come an„ after-segmentatic . 



On the oh .... , ,61, the 



rotoplasmi prim- 



'ter all the blastc 



been cut out it,. It i: ill re, La 



.ion of nuclei form- 



"wreath" by the disappearance of cell walls, 



has, because o i,city of i . seen in 



t her it ta r not, I can not 



The L iher, a 



sh, cells are bu central peri 



and added to the blastomeres, can not here be taken up. 

 However this would see. i legitimate consequence of 



e of cell formation as that i in type III, 



. . i,tion in ... 77 , 7$, 



30, in which a perfectly definite yer has 



If theg s are co .. His 1 



12, this clearer. 



