192 



ELMEE ROBERTS 



TABLE 9 



Average of length oj vestigial wings of males and females in ' crossed-in-and-selected' 

 series C subjected to high temperature 



GENERATION 



F29 

 F30 

 F31, 

 F32. 



AVERAGE 



OF 

 PARENTS 



25.50 

 45.25 

 52.00 

 49.45 



AVERAGE 



GENERA- 

 TION 



36.55 

 47.01 

 49.45 

 48.13 



GENERATION 



F; 

 F; 

 F; 



AVERAGE 



OF 

 PARENTS 



51 . 60 

 49.90 

 51.74 



AVERAGE 



OP 

 GENERA- 

 TION 



49.90 

 51.74 

 50.02 



