STRAIN AND INDIVIDUAL IDIOSYNCRASIES 2$ 



F 2 Hyb. white X hyb. white; produced 51 white, 18 yellow 



cocoons. 

 F 2 Hyb. yellow X hyb. yellow; produced 86 yellow, 34 white 



cocoons. 

 F 2 Hyb. yellow X hyb. yellow; produced 42 yellow, 7 white 



cocoons. 

 F 2 $ Hyb. white X $ hyb. yellow ; produced 40 yellow, 26 white 



cocoons. 

 F 2 $ Hyb. yellow X J hyb. white ; produced 29 yellow, 36 white 



cocoons. 



F! $ Bagdad X $ Istrian; produced 10 white, 9 yellow cocoons. 

 F 2 Hyb. yellow X hyb. yellow; produced 26 yellow, n white 



cocoons. 

 F 2 (? Hyb. yellow X J hyb. white ; produced 56 yellow, 54 white 



cocoons. 

 F 2 <$ Hyb. white X 5 hyb. yellow ; produced 45 yellow, 67 white 



cocoons. 



F x c? Bagdad X $ Istrian; $ Istrian X $ Bagdad; produced 

 produced all white cocoons. all yellow cocoons. 



. I I 



F 2 c? Hyb. white X ? 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. ^ ^ 



F 2 Hyb. white X hyb. white; produced 85 white, 



26 yellow cocoons. 



F 2 Hyb. yellow X hyb. yellow ; produced 71 yellow, 



13 white cocoons. 

 F 2 $ Hyb. yellow X J 1 hyb. white; produced 72 yel- 



low, 48 white cocoons. 

 F 2 J Hyb. white X $ hyb. yellow; produced 73 yel- 



low, 52 white cocoons. 

 F 2 Hyb. white X hyb. white; produced 86 white, 



33 yellow cocoons. 



