Studies on Chromosomes. 



379 



In the stage that immediately follows, the chromosomes for a 

 brief period become so crowded that their exact changes cannot he 

 followed. In slightly later prophases of the second division, which 

 follows without "a pause, the chromosomes again spread apart, 



f«< ^1? ?•% 



till %^ m iti 



• % 





m 



n 



P 



Fig. 2. 



Coenus delius. a, b, normal equatorial plates, metaphase of first division; c, abnormal form with nme 

 chromosomes; d, the entire chromosome-group, first division metaphase, in side view, the upper four m 

 their natural position; e, /, anaphases in side view showing in each case the idiochromosomes and three 

 others; g, It, daughter-groups, late anaphase of first division, from the same spindle; ;", /, equatorial 

 plates, metaphase of second division, polar view; k, metaphase of second division; /, later metaphaie, 

 separation of the idiochromosomes; m, n— o, p, two pairs of daughter-groups, late anaphase, second 

 division, in each case from the sam.e spindle. 



