232 THE EMBRYOLOGY OF THE HONEY BEE 



A 



FIG. 93. Yolk cells, showing mitotic division. A, cell showing a regu- 

 lar symmetrical spindle of the ordinary (normal) type. B, telephase of the 

 same type. C, cell showing small but symmetrical spindle. D, cell showing 

 a small and slightly unsymmetrical spindle. E, cell showing chromatin 

 aggregated into dense masses ; telephase. F, G, irregular and asymmetrical 

 spindles, x 1107. 



time when the blastoderm has just been completed, the yolk 

 is almost free of cleavage cells. These are found isolated 



