'74 



EDITH I'INNEV. 



T\vo somatic pairs of Y's occur and these an- shown in 1 ; u~. 

 5, 6, and 7 to be of two sizes. Their demonstration was not 

 easy in the late division stai;e^ for as Miss Het'fmT found in 

 . the arms of the Y's lie parallel. In IlippiDnx- one 



2a 



2b 



h 



H 



tin/, 



3 a 



v V v 



) 



V 



\ W 



H 



3b 4 a 4b 



FIGS. 2a and j/'. II i t>t'>""' One spindle in anaphase from two sections. l\\" 

 pairs of \ - .md a Imnk are present. 



FlGS. 30 and 36. Hipf''" 1 " Saim .. i . j,i and 26. //. tin- lmi,k--h.i|-d 

 chromosome. 



FIGS. 4aand 46. //;/'/"" ;( Lateanaphaa Not all of the rod-shaped chi 

 somes were drawn in these figures, .\lldia\\inu-ina.i. ,,i ., mavniiH .uinn oi i 

 diameters. 



