en; 



201 



V--haped rhroii From these : it is evident that 



the Y--haped ehronio-omes of the anaphase come from a long 

 rnl- iromo- > which the spindle fibers are attached 



with m<>re <>r It re-ul.trity in the middle of the chromosome 

 Fig. 12 It tin it ion of the daughter-chromosomes 



i than at the other (Fig. 13) or one 



.inn of tin- < hrom" n traded more than the other, or, 



a- I i^. 14 ie hindrance on one side prevents one 





10 



11 



12 



13 



15 



.. 

 f 



i -ml I'nun iiM\ii rd tin pole as rapidly as the other end, 



thea tin \aiiation-, in ih' h of the arms mentioned above 



Fig i ap|>-.ir. In comparing these figures with Baltzer's '090, 



I'l. \\X\1I . Fig i" v< cannot fail to find a dose resemblance. 



In K.ili/i T'- |>a|H-i '>) n, p. <)o;, we notice a suggestion that in 

 tin- h.M.k--hap-d rhp-in. -, mu-s there may be a union of two chn>- 

 mosomes, i-nd tn md at tin- jx)int where spindle fibers are at- 

 tached. Tin -on for this suggestion are tin- extra- 

 ordinary len-th nt' the hook-shaped chromosomes, and the fan 

 that all other ehnuno-onii-- are attached to the spindle til.i-r- 

 1>\ one end. Thi- suggi 'ii is a very natural one, for Mich 

 apparently hoim .-eneou- but pllirixalenl chromosomes are 



