238 W. M. SMALL WOOD. 



EXPLANATION OF PLATE III. 



FIG. 19. Union of the male and female pronuclei. Pronl. >> female pronu- 

 cleus ; pronl. $ , male pronucleus. 



FIG. 20. Low power drawing of entire egg. The fine peripheral granules extend 

 clear around the egg. Several nuclear-like bodies are interpreted as polyspermia. 



