PLATE II 



The drawings for these figuies were made mostly a1 magnifications of from 1800 to 

 2400. The reproduction here given is about two-thirds the size of the originals. All 

 figures are of the UcmerocalUs fulva clon Euro pa : — 



Fig. 17. Metaphase of the first division showing 1U chromatin masses passing 

 in each pole, witn some split and some fragmenting. 



Fig. 18. Splitting and fragmenting of chromatin masses in the metaphase of the 

 lirsi division. 



Figs. 19 >v 20. Early anaphase of tirst division with a Lagging chromosome. 



Fig. 21. Three groups of 4 chromosomes with sonic split, al the time of the 

 anaphase of the firsl division. 



Fig. 22.- Anaphase of the lirsi division with cell plate forming and parts of one 

 chromosome on opposite sides of it. 



Fig. 23. Anaphase of lirsi division with the 6 chromosomes of each group split for 

 the second division. 



Fig. 24. a condition alter the equatorial plate stage of the flrsl division. 'The 

 chromosomes have fragmented and split and some are of irregular shape. The dis- 

 tribution is irregular. This condition follows thai shown in Fig. 16. 



i'ii. 25. A condition frequently seen following the anaphase of the first division 

 with X-shaped chromatin masses developed. 



Fig. 26. One of two cells formed by the first division. The i; chromosomes are split 

 for the second division. 



I'm,. 27. Two cells formed Dy the lirsi division, one with 6 chromatin masses, the 

 other with 12, some ol which are split. 



Figs. 28 & 29. Polar views of the tw [uatorial plates of a second division in 



reduction, one with 12 masses, the other with 16, and all in process of dividing. 



I'i.,. 30. An anaphase of the second division with four groups of chromatin masses 

 of the aumbers 1 -, 1 < • . 17. and 18, with some of irregular shape and possibly double. 



