COAT CHARACTERS IN GUINEA-PIGS AND RABBITS. 



53 



dark-eyed animals, each having one albino and one hybrid parent. 

 Half of these animals should have the character of class (i), p. 48, and 

 half that of class (3). Pairs established by random selection of indi- 

 viduals should, therefore, be in the proportions, i mating within class (i) 

 to 2 matings between classes (i) and (3) to i mating within class (3). 

 Pink-eyed pigmented young should be produced only in matings of the 

 first sort, but albinos should result from all three sorts of matings. 

 The matings which produced pink-eyed young are as follows : 



The remaining matings are as follows : 



The evidence from the group of matings contained in these two lists 

 is less clear than that from the two groups previously examined. 

 There is a considerable excess of pink-eyed young in most of the mat- 



