C4 



the periblast would seem to lead to the former conclusion. 

 The second type is represented in Pi .7 , which, ji 



-■ oi' cells in the periphery size, 



is from a blastoderm slightly you; 1 the pre 

 The i t is sunken deeply into the yol i,s, thus 

 nearly doubled the i tion cavi 



filled with scattei . . iblast is so 



obscur - no nuclei could be found. It is 



here free from cells, but Ltion 



in this respect like the precee- . r 



', is a binucleate cell, its 



Fig, 77 is from a roun "' about the .-. 



' : spok- 



en of here, for the outer ceh; 



cavity is small interstices be- 



tween the cells. Tl i ri .ast is full 



of 1 abounds in nuclei in sections 



the center seem! Lis, 



left Ran th< re is n t ..itotic f. 

 as any in the blastomeres, 



do better illustration, of the lens-sl - istoderm, 

 so c. istic of late teleost segmentation, than i . 



