Little: Piebald Spotting in Dogs 15 
Table Il.—Pedigree of Spotted Airedale Terriers. 
First litler containing spolled pups 
(92 
(162 { 
(103 
| (149 
*5 typical; 2 spotted } 
puppies; 
* Including 2 228 
on one side of the first. It seems very 
likely that if a mutation producing 
spotted coat color took place in the 
eee of any one individual, that 7 
o. 135 or one of its ancestors, was the 
animal in question. 
Examination of Fig. 3, Nos. 1 and 
2, shows that the amount of white on 
the coat of these puppies is considerable 
and that, like the Scottish terrier puppy 
Second litter containing spolled pups 
(129 { 140 
(117 4 
4 typical; 2 spotted | {55 
puppies; Fig. 3, Nos. ‘ 
1 and 2, 
(135 
(80 4 
(98 { 140 
(104 4 69 
108 { {135 
(96 4 
{149 
already described, there is no possibility 
of its having been developed by selection 
from minute beginnings. 
It is hoped that it will be possible to 
obtain certain of the animals from the 
spotted Airedale stock for breeding 
purposes and thus to ascertain more 
definitely the genetic nature of the 
variation. 
University Wants Photographs of Twin Calves 
The Department of Genetics at the 
University of Wisconsin is making a 
study of twins, particularly in cattle, 
and desires to secure photographs of 
twin calves. Those of spotted breeds 
are especially wanted. In this connec- 
tion, particular interest attaches to the 
degree of similarity of marking’s on the 
duplicated parts of double monsters, 
such as those with two heads and a 
single body, or two bodies and a single 
head. These freaks are often “stuffed” 
or otherwise preserved, and the college 
will appreciate receiving any informa- 
tion relating to the existence of such 
specimens in museums or elsewhere, 
and how photographs or accurate 
sketches might be obtained. It is be- 
lieved that a more accurate knowledge 
of the conditions in such cases will 
help toward an understanding of the 
larger problems of inheritance in cattle 
and other animals. Those who have 
any information that will assist in the 
above studies should write to the 
Department of Genetics, University of 
Wisconsin, Madison. 
