CELLS IN DIVISION 



is very small, while that of Tradescantia or an Amphibian is compara- 

 tively large. It would be interesting to know whether nuclei in one 

 species with different degrees of heteroploidy divide at approximately 



Table III. TABLE OF MITOTIC TIMES IN MINUTES 



* Including transition to metaphase. 



t End of cleavage to appearance of nucleoli. 



85 



