302 Bede ADGEN AND) Ee Wee Sib xXelON: 
VI.C.3.]. Female, Black carrying Albino only. 
Matings :—(1) with male p of the same brood (A+R) ; 
31 young, 14 Black, 17 Albino ; 
(2) with a male (from Brood 1 of male 
VI.C.2.p.) (A+R); 9 young, 4 Black, 
5 Albino. 
VI.C.3.k. Female, Black carrying Albino. Red not known. 
Matings :—(1) with a Black male of the same brood ; 
6 young, 3 Black, 3 Albino. 
This brood died before reaching 
maturity, and could not therefore be 
tested for Reds. 
(2) with male VI.A.2.j. Died. 
VLC.3.1. Female, Black. Constitution not proved. 
Matings :—(1) with Red male I.E.1.a.; 2 young, Black. 
These died without mating. 
To sum up, 69 animals were tested, 28 males and 41 females ; 58 of 
these gave conclusive results, while six others are marked ‘ doubtful,” 
either because the number of offspring obtained was not considered quite 
sufficient, or because the animal after being proved for one factor, red 
or albino, died before the presence or absence of the second factor could 
be definitely established. The remaining five gave no definite results. 
The proportions should be, according to Hypothesis II, 1: 2: 2: 4, 
which for 64 would be 7: 14: 14: 28. 
The actual figures counting the “ doubtfuls ” are 7:17: 10:30. They 
were divided as follows > 
Pure Blacks, 5, three males and two females, 2 others, male and female, 
“ doubtful,” i.e. showing neither the red nor the albino factor in 
their young nor in the matings obtained from these. 
Black carrying Albino only, 14, six males and eight females, 3 others, 
females, “ doubtful,” i.e. no proof of the red factor. 
Black carrying Red only, 9, three males and six females, | other, female, 
“ doubtful,” i.e. no proof of the albino factor. 
Black carrying Red and Albino, 30, thirteen males and seventeen females. 
In all, 3,137 young were obtained from these matings, 32 of which 
were not examined for eye-colour. 
The matings Black by R; by R+A; by A+R, 222 young all Black. 
Black by B; by B+A; by B+R-+A, 121 all Black. 
Black carrying Albino, by R; 148 all Black: by R+A; 53 Black and 
16 Albino: by A+R, 103 Black, 106 Albino. 
