50 



PIEBALD RATS AND SELECTION. 



Table 47. — F^ generation from minus series crossed with wild. 



Table 48. — F^ generation from minics series crossed with wild. 



Grade of (F7) ofTspring. 



Grade of (Fc) parents. 



!+f 



21 . 

 21 . 



3L 



+1 14 



1^ 



91 i 91 93 I q qi I 01 



3f 



m 



-t-> 

 o 



— I 



12 ! 1 



3L.. 



3 ; 1 



5 1 2 



13 

 2 2 



53 

 28 

 10 

 12 

 27 

 14 

 10 



1 o ! 



Totals or means, 2.80 3 2 ' 8 j 9 . 26 12 j 28 



23 I 26 ^ 10 I 6 



1 154 



a 



o 





2.41 

 2.14 

 2.32 

 2.93 

 2.59 

 2 63 

 2.85 



.21 

 .61 

 .55 

 .07 

 .53 

 .62 

 .52 



2.46 .34 



Table 49. — F^ generation from minus series crossed with wild. 



