58 p. W. WHITING AND HELEN DEAN KING 



ters containing ninety-six individuals, fifty-eight males and 

 thirty-eight females, there were: fourteen dilute grays, six males 

 and eight females; two light sepias, one male and one female; 

 seven dilute gray hooded, five males and two females; forty-two 

 fawns, twenty-six males and sixteen females; nine fawn hooded, 

 seven males and two females ; twenty-two Albinos ; thirteen males 

 and nine females. In all there were twenty-three CrCr, fifty-one 

 CrCa, and twenty-two CaCa, which is very near to the theoretical 

 1:2:1 ratio. 



A wild-type male taken at the paper house was crossed with 

 Albino females. Seven litters were produced containing fifty- 

 nine individuals, twenty-seven males and thirty-two females. 

 There were twenty-eight of the wild type, fourteen males and 

 fourteen females, and thirty-one fawns, thirteen males and 

 eighteen females. The fawns were inbred. They produced 

 twenty-two litters consisting of one hundred and sixty-two indi- 

 viduals, eighty-nine males and seventy-three females. There 

 were twenty-three dilute grays, seventeen males and six fe- 

 males; six light sepias, four males and two females; ten dilute 

 gray hooded, five males and five females; three light sepia hooded, 

 two males and one female; fifty-three fawns, twenty-two males 

 and thirty-one females; twenty-four fawn hooded, fifteen males 

 and nine females; forty-three Albinos, twenty-four males and 

 nineteen females. This amounts to forty-two CrCr, seventy- 

 seven CrCa, forty-three CaCa, which again is close to the expected 

 ratio. 



A wild gray female from the waste-paper house bred to an 

 Albino male produced in two litters thirteen individuals, six 

 males and seven females. There were of the wild type, four males 

 and three females; and of fawns, two males and four females. 

 The fawns inbred produced nine litters consisting of sixty indi- 

 viduals, thirty-six males and twenty-four females. There were 

 seven dilute grays, four males and three females; two light sepias, 

 one male and one female; four dilute gray hooded, two males and 

 two females; two light sepia hooded, two males; twenty-two 

 fawns, fifteen males and seven females; six fawn hooded, two 

 males and four females; and seventeen Albinos, ten males and 



