PLATE III 



The i Ira wings for these figures were made mostly at magnifications of from L800 to 

 2400. The reproduction here given is about three-quarters the size of the originals. 

 All figures are of the Hemerocallis fulva clou Europa : — 



Fig. 31. Anaphase of the second division. The chromosomes arc nearly normal in 

 shape and in total number, but they are being distributed into live groups of 3, 4, 6, 

 • ;, and 7. 



Fig. 32. — Anaphase of the second division. The total number of chromosomes is 

 normal, their shape is normal, the number of nuclei being formed is normal, but there 

 is non-distribution in ench of the two spindles. 



FIG. .'!•"..- Five nuclei developed from one spore ther cell. They are of different 



sizes and contain X-shaped chromatin masses. Chromatin material is stretched be- 

 tween two of the nuclei. 



Fh;. :;t. A normal number of 4 nuclei following the second division. 



FIG. •"."•. four cells of a quartet somewhat unequal in size and the nuclei contain- 

 ing X-shaped chromatin masses (magnified only 1000 X). 



Fig. ■".''>. Microspore at the time of the divish f its primary cell. There is the 



normal haploid number of 6 chromosomes. Below, tne equatorial plate much more 

 enlarged. 



FlG. .".7. — The same stage shown in Fig. :'..". but the number of chromosomes is 18. 



