STRAIN AND INDIVIDUAL IDIOSYNCRASIES 



25 



F2 Hyb. white X hyb. white; produced 51 white, 18 yellow 



cocoons. 

 F2 Hyb. yellow X hyb. yellow; produced 86 yellow, 34 white 



cocoons. 

 F2 Hyb. yellow X hyb. yellow; produced 42 yellow, 7 white 



cocoons. 

 F2 (^ Hyb. white X 5 hyb. yellow ; produced 40 yellow, 26 white 



cocoons. 

 F2 (^ Hyb. yellow X ? hyb. white ; produced 29 yellow, 36 white 



cocoons. 

 Fi (^ Bagdad X 5 Istrian; produced 10 white, 9 yellow cocoons. 

 Fg Hyb. yellow X hyb. yellow; produced 26 yellow, 11 white 



cocoons. 

 F2 (^ Hyb. yellow X $ hyb. white ; produced 56 yellow, 54 white 



cocoons, 

 F2 (^ Hyb. white X $ hyb. yellow ; produced 45 yellow, 67 white 



cocoons. 

 Fi (^ Bagdad X ? Istrian ; t^ Istrian X $ Bagdad ; produced 



produced all white cocoons. all yellow cocoons. 





F2 c? Hyb. white X 5 hyb. yellow; 



produced 66 yellow, 41 white cocoons. 

 Fi c? Bagdad X $ Istrian ; ^ Bagdad X $ Istrian ; produced 



produced 31 white, 21 yellow 10 white, 9 yellow cocoons, 



cocoons. 



F2 Hyb. white 



26 yellow cocoons. 



F2 Hyb. yellow 



13 white cocoons. 

 Fj $ Hyb. yellow 



X hyb. white; produced 85 white, 



m 



X hyb. yellow; produced 71 yellow. 



X cf hyb. white; produced 72 yel- 

 low, 48 white cocoons. 

 F2 2 Hyb. white X ^ hyb. yellow ; produced 73 yel- 



low, 52 white cocoons. 

 F2 Hyb. white X hyb. white; produced 86 white, 



33 yellow cocoons. 



