58 



GERM-CELL CYCLE IN ANIMALS 



end which we have called the pole-plasm, and ap- 

 parently all of the pole-plasm, together with this 



cMp 



Rg-c 



FIG. 17. Miastor americana. Longitudinal section of egg with one 

 germ cell (p.g.c.) and nuclei undergoing chromatin-diminution pro- 

 cess, c = cytoplasm ; c M p = chromosome middle plate ; c R = 

 chromatin remains. 



nucleus, is then cut off from the egg (Fig. 17). This 

 cell, as has been conclusively proven by studies of 



