542 P. W. WHITING 
B. Whate and white-spotting 
White-spotting in cats is exceedingly irregular in amount and 
distribution, but tends to appear more commonly on the under 
parts. There appears to be no regularity in dominance and 
probably many factors are involved. The degree of white- 
spotting in the parents tends to appear again in the offspring, 
although wide segregation occurs. I have usually selected cats 
with relatively small amount of white and have obtained kittens 
of the same general character. 
Solid white appears to be a complete dominant over color 
whether the color is self or spotted with white. It is possible 
that it may be allelomorphie with one or more of the white- 
spotting factors, but my data are not conclusive on this point. 
Castle (16) regards it as possibly an extreme form of white- 
spotting. 
A cream male (8)! with slight amount: of white crossed to a 
blue-eyed deaf white female (7) sired (6) three pure white kit- 
tens; one male and two females. The kittens had normal hear- 
ing and developed yellow eyes. The male had a slight smutti- 
ness of the hairs on top of the head which appeared when he was 
two weeks old and then shortly disappeared. The females never 
developed any pigment in the hair. The same pair of cats mated 
again and produced two solid white kittens which were not 
reared. 
The cream male (8) was later mated (32) to a yellow-eyed 
white with normal hearing (22). Two whites, a male and a 
female, were produced, as well as two females that were entirely 
self color, a blue and cream and a cream. I was unable to de- 
tect any white hairs on these two pigmented kittens. It would 
appear, then, that the white mother carried factors which domi- 
nated the sight white marking of the father, and thus produced 
totally self-colored kittens. 
! Individual numbers have been inserted after mention of any animal that is 
referred to more than once in this paper. Matings have been numbered simi- 
larly. It will thus be possible for the reader to check up the genetic composition 
of any animal by its progenies from various matings. 
