168 The Journal 
nesota, calls my attention to the fact 
that the ass, camel, and elephant have 
been the subjects of selective breeding 
to a relatively low degree as compared 
with most of the other domestic ani- 
mals. The number of ‘breeds’? among 
them is very small. This fact lays 
strong emphasis on selective breeding 
as the important factor in the spotting 
.? Short bibliography of piebald humans: 
of Heredity 
of domestic animals. However, we 
have the cases of spotted humans which 
are certainly not due to selective breed- 
ing. In the case of the human I am 
obliged to believe that domestication 
with its frequent large demands on 
nervous energy plays an important 
part in the production of the albinotic 
spottings of the skin.? 
1. Hutchinson, Sir Jonathan, ‘‘On Paleogenetic Face-pattern in Acroteric Piebalds,” pp. 
1479-1481 of The British Medical Journal, vol. I, June 18, 1910. 
. Simpson, Q. I. (with W. E. Castle), ‘‘A Family of Spotted Negroes,”’ pp. 50-56 of A meri- 
can Naturalist, January, 1913. 
Albinism in Man, Atlas, Part 2, (London, 1913.) 
2 
3. Pearson, Karl, (with E. Nettleship, C. H. Usher, and B. C. Lamb), A Monograph on 
+ 
. Stannus, Dr. Hugh, ‘Anomalies of Pigmentation Among Natives of Nyasaland; 
A Contribution to the Study of Albinism,” pp. 333-365 of Biometrika, October, 1913. 
5. Jenks, Albert Ernest, ‘‘A Piebald Family of White Americans,” pp. 221-237 of American 
= Anthropologist (N.S.), vol. XVI, No. 2, April-June, 1914. 
6. Cockayne, E. A., M.D., ‘‘A Piebald Family,” pp. 197-200 of Biometrika, November, 1914. 
Bad Eyes and Bad Hearts 
As the latest theory of heredity 
assumes that every inherited factor in 
the germ-plasm affects not one but 
many parts of the body, interest in 
searching for these parallel effects, 
these “correlated variations,’ is in- 
creased. J. Strebel finds an association — 
between certain hereditary forms of 
eye-defect (ektopia, myopia) and a 
weak heart, and reports the discovery 
in the Archiv ftir Rassen- und Gesell- 
schafts-Biologie (X, 4). Evidence is 
not sufficient to show how close the 
relation between the two facts is, or 
whether indeed it is really a matter of 
heredity, rather than of chance associa- 
tion. It should be easy to collect 
further cases to determine whether these 
hereditary defects of the eye are regularly 
accompanied by defects of the heart. 
War Hurts Scientific Breeding Abroad 
Intelligent live-stock breeding is going 
by the board in France and Germany, 
and production ‘regardless of con- 
sequences” is being insisted upon, 
according to the Agricultural Gazette of 
Canada (p. 206, March, 1916). The 
exportation of cows is said to have been 
prohibited and orders given that all 
cows must be bred, no matter whether 
in accordance with a scientific plan of 
herd- and breed-improvement. ‘‘This 
means,’ says the Gazette, “that the 
education of a century will be partly 
undone abroad, and a breed of worse 
than grades—mongrels— is likely to be 
created that will have to be regener- 
ated.”’ Probably the result will be that 
Europe will have a much smaller amount 
of purebred stock for export after the 
war, than before, and American breeders 
will therefore be thrown more upon 
their own resources. 
. 
