c c 



e-c 



'%&$- 



Fig. 23. — Karyokinesis. (After Flemming.) 



1. Coil stage of nucleus ; cc centrosome ; 2, Division of chromatin into U-shaped loops, 

 nd longitudinal splitting of these (astroid stage) ; 3, 4, Recession of chromosomes from 

 he equator of the cell (diastroid) ; 5, nuclear spindle with chromosomes at each pole, and 

 achromatin threads between ; b, Division of the cell completed. 



[Facing p. 102. 



