COAT CHARACTERS IN GUINEA-PIGS AND RABBITS. 



The observed result approximates equality of the pigmented and 

 unpigmented classes of albinos, as expected on the hypothesis that 

 segregation occurs in all cases. The one good Himalayan produced by 

 the intermediate cf 19 is noteworthy as showing that the full Himalayan 

 character was present in the hybrid and capable of segregation, though 

 seen in a partially dominated condition in the hybrid himself. Similar 

 cases occur in the matings enumerated below. Apparently cases of 

 this sort are like those of the imperfect rough guinea-pigs produced by 

 certain smooth animals in crosses with rough ones, which nevertheless 

 were capable of transmitting the rough character in its full intensity. 



Further evidence of segregation of the Himalayan and pure white 

 types of albino character in the gametes of the hybrids is afforded by 

 mating these inter se, as the following experiments show. 



Explanation. D. = fully pigmented or dark Himalayan; D. M. = dark mosaic ; /. M. inter- 

 mediate mosaic ; /. = intermediate; P. pure white. 



