; and Professor Pearson's various
popular lectures, also _A Second Study of the Influence of Parental
Alcoholism on the Physique and Intelligence of Offspring_. By Karl
Pearson and Ethel M. Elderton. Eugenics Laboratory Memoir Series XIII.
[22] _A First Study of the Influence of Parental Alcoholism on the
Physique and Intelligence of Offspring._ By Ethel M. Elderton and Karl
Pearson. Eugenics Laboratory Memoir Series X. Harald Westergaard, who
reexamined the Elderton-Pearson data, concludes that considerable
importance is to be attached to the selective action of alcohol, the
weaklings in the alcoholic families having been weeded out early in
life.
[23] Prohibition would have some _indirect_ eugenic effects, which will
be discussed in Chapter XVIII.
[24] Chapter XXX, verses 31-43. A knowledge of the pedigree of Laban's
cattle would undoubtedly explain where the stripes came from. It is
interesting to note how this idea persists: a correspondent has recently
sent an account of seven striped lambs born after their mothers had seen
a striped skunk. The actual explanation is doubtless that suggested by
Heller in the _Journal of Heredity_, VI, 480 (October, 1915), that a
stripe is part of the ancestral coat pattern of the sheep, and appears
from time to time because of reversion.
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