570 GENETICS IN RELATION TO AGRICULTURE 
ice of a dark brown West Highland stallion which was also indistinctly 
marked. 
In themselves these foals suggested as strongly that telegony might 
occasionally occur as did those described by Lord Morton. But Ewart 
tested the matter further by breeding two dark West Highland mares 
closely related to Mulatto to the same black Arabian stallion which had 
sired the striped foal. Two foals were produced, one of which possessed 
the same sort of indistinct markings as those characteristic of the foals of 
Mulatto, the other was much more distinctly striped. There can be no 
question, therefore, that the striping of Mulatto’s foals was a consequence 
of normal hereditary processes having nothing to do with telegony. 
Further evidence as to the non-tenability of the doctrine of telegony 
might be cited from the Penycuik experiment. A vast amount of ad- 
ditional evidence has been obtained from other experiments, some of 
which have been performed with the distinct object of testing the 
doctrine, others for different purposes. The experiments of Baron de 
Parana with zebra hybrids closely paralleled those of Ewart and yielded 
likewise no evidence in support of the doctrine of infection. The series 
of photographs shown in Figs. 222 to 225 have been drawn from an article 
by Rommel describing the work of the U. 8S. government with hybrids 
between different species of Equus. Here again there is no evidence 
that Georgia the Morgan filly which Baby Gates produced subsequently 
to the production of the zebra hybrid Juno shows any effect of the pre- 
vious impregnation. The apparent stripes on the body of Georgia, it may 
be mentioned in passing, are merely her ribs showing through. Similarly 
there is no evidence that Sweepstakes, the dam of Star Pointer and other 
pacers, was in any way influenced by the fact that previously she had 
borne two mule foals. The evidence from mule-breeding establishments, 
in which thousands of mules have been produced, in every dependable 
instance is against the doctrine of telegony. Mumford has recorded 
a large number of concrete cases in support of this position. In a few 
instances mares had produced as high as ten or eleven mule foals before 
they were bred to stallions, yet in not a single case was there positive 
evidence of telegony. 
The development of the Mendelian theory of heredity has robbed 
most of the old evidence for telegony of all its value. An instance which 
Ewart quotes is of considerable interest in this connection. A tan Dachs- 
hund bitch was bred to a tan dog, and produced a litter of puppies 
having pure white bodies and tan cheeks and ears. Now this bitch had 
previously borne by misalliance a litter of puppies to a white Fox terrier 
with tan cheeks and ears. Presumably both the tan Dachshund bitch 
and dog had long lines of tan or black and tan ancestors; what more natu- 
ral than to conclude that this was a strict case of telegony? But the 
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