PLATl] 4 
EXPLANATION OF FIGURES 
CUMINGIA 
1 Contrifug;o(l ovarian egg; with attachment stalk. 
2 Centrifuged ovarian egg with attaclimont stalk. 
3 Centrifuged ovarian egg dissolution of germinal vesicle, etc. 
4 Centrifuged ovarian egg with chromosomes passing to spindle. 
5 Centrifuged ovarian egg with chromosomes later stage. 
6 Egg centrifuged at once, killed after half an hour. 
7 Egg centrifuged when polar spindle was at oil pole. 
8 Egg centrifuged when polar spindle was at oil pole. 
0 Egg centrifuged, second polar spindle present, and displaced. 
10 Normal egg with two pronuclei and segmentation centers. 
11 Centrifuged SO turns just before dissolution of pronuclei. 
12 Centrifuged 80 turns just before dissolution of pronuclei. 
