



a 



fST \ 



, m 



I m 



p 



III! 



Fig. 5 Second division, No. 64. a, 6, metaphases, polar views, 11 chromo- 

 somes; c, d, the same, 12 chromosomes; e, side view; /, the same showing all the 

 chromosomes (four from lower level shown below) ; g, initial anaphase, all the 

 chromosomes shown (five of them from a lower level at right) ; h-o, later anaphases; 

 p, q, sister groups, from the same spindle, late anaphase, p, the upper group with 

 11 chromosomes; q, the lower group with 12; r, s, two late anaphase groups (not 

 from the same spindle) to show the third and fourth types of spermatid nuclei. 



