IN THE SECOND CHROMOSOME. 



317 



One vestigial (arc) speck male was produrod by crossinR-ovcr. He 

 must have had the left-hand end only of the Nova Scotia chromcv 



Cjll Vg ttr Sp 



He was mated to a hliick female of stock, 



some, 



6 Pr Vg ttr Sp 



and two wild-type daughters, 



Cm Vg a, .«? 



, were tested, in cultures 



328 and 329. They gave the results shown in table 13. 



Table 13. 



These data have been added to those of table 12 in the summary 

 for Cm, table 14. The corresponding map is shown in the third line 

 of figure 1. 



Table 14. — Cur, summary. 



Loci. 



S' b.. 

 S' c. 

 S'sp. 

 b Pr. 



b Vg. . 



be. . 



6 8p. . 

 PfC. 



PrSp. 



Vg 8p. 

 C Sp.. 



Second broods. 



S'b.. 

 S' c. 

 S'sp. 

 bpr. 

 be. 

 b Sp. 

 PrC 

 PrSp. 

 C Sp. . 







2,505 



1,855 



1,147 



447 



452 



2,014 



1,497 



159 



236 



289 



1,587 



1,277 

 1,009 

 617 

 261 

 1,228 

 760 

 219 

 143 

 905 



1 







650 



1,104 



2 



70 



691 



1,476 



41 

 213 

 233 

 864 







268 

 553 

 

 310 

 671 

 42 



lis 



466 



Total. 



2,505 



2,505 



2,251 



449 



522 



2,705 



2,973 



200 



449 



522 



2,451 



1,277 



1,277 



1,170 



261 



1,538 



1,431 



261 



261 



1.431 



Percentage. 





 25.9 

 49.0 



0.5 

 13.4 

 25.4 

 49.7 

 20.5 

 47.4 

 44 6 

 35.3 



0.0 

 21.0 

 47.3 





 20 1 

 47.0 

 10.1 

 45 2 

 32.6 



The values obtained from second broods (table 14) run consi.'^tontly 

 a trifle lower than the corresponding values for first broods. The 

 differences are small in every case; but since all are in the .s:imo direc- 

 tion, and since females with neither Cm or C;/ . show an age clumge 



