262 



THE AMERICAN NATURALIST 



[Vol. XLY 



In another case of four females one was an albino. 

 Mr. Mead lias met with similar results, and neither 

 of us have known an albino to be produced from the 

 eggs of a yellow female." These brief notes pointed 



so clearly to Mendelian inheritance that I resolved to 

 investigate the matter, and 1 have thus far bred over 900 

 individuals from white females and from the daughters 

 and sons of white females. In general my results differ 

 from Edwards's observations at two points: (1) The 

 white females always produce both white and yellow 

 females, provided the family is large enough to represent 

 all the possibilities. The family mentioned by Edwards, 

 four yellow females, no white, was too small' to indicate 



