66 ELLIOT R. DOWNING. 



part of the egg (Nussbaum). The greatly enlarged nuclei, gorged 

 with lecithin, also become yolk granules or " Pseudozellen." 



7. Two polar bodies are extruded by the egg, as other ob- 

 servers have noted. The material thus far examined will not 

 permit a final statement as to the details of reduction, but the 

 first polar body contains twelve chromosomes, the second six. 

 Certainly the female pronucleus has six, as has the male pronu- 

 cleus also. 



8. The nucleus and chromosomes though varying greatly in 

 size are constantly present, never disintegrating and disappearing. 



