124 



Isabel McCracken. 



another brood of the same type. Each mass of eggs oviposited 

 was removed to a separate jar for development. 



Tables II and III show the results in full. The numbers in the 

 first column are simply my distinguishing numbers of broods 

 utilized for the crossings. The second column represents, not the 

 total number of egg masses produced, but the number of broods 

 which the facilities for handling permitted me to rear. 



Table III— S X S. {See also Table VI.) 



In Table II we find a total of 4985 individuals, representing 

 a total of 157 broods, all coming true to parents in the second 

 generation, the grandparents havmg been selected at random, 

 except for color type (/. e., regardless of ancestry). 



In Table III we find two matings, namely, e and /, producing 

 broods entirely like parents, but every other mating produced either 

 mixed broods, or some pure and some mixed broods. If we leave 

 out of consideration the evidently pure lineage-matings produced 



