The Popular Science Monthly, June, 1900: Vol. 57, May, 1900 to October, 1900Various
Science
The Popular Science Monthly, June, 1900: Vol. 57, May, 1900 to October, 1900
Various
Science -- Periodicals; Technology -- Periodicals
Romanes also believed that telegony occasionally occurred. He paid a
good deal of attention to the matter, commenced experiments in the hope
of settling the question, and corresponded at length on this subject
with professional and amateur breeders and fanciers. The result of his
investigations led him to the conclusion “that the phenomenon is of
much less frequent occurrence than is generally supposed. Indeed, it is
so rare that I doubt whether it takes place in more than one or two per
cent of cases.” A recent controversy in the Contemporary Review shows
us that Mr. Herbert Spencer is a firm upholder of telegony, and that he
has a theory of his own as to the mode in which it is brought about. He
suggests that some ‘germ-plasm’ passes from the embryo into the mother
and becomes a permanent part of her body, and that this is diffused
throughout her whole structure until it affects, among other organs,
the reproductive glands. This view, which in some respects recalls
the pangenesis of Darwin, is intermediate between the saturation and
the infection hypothesis. Professor Ewart refers to it as indirect
infection.
Weismann, to whom we owe the term telegony, came to consider the facts
for and against its existence in connection with his well-known inquiry
into the inheritance of acquired characters. If telegony be true, there
is no need to look further for a clear case of the inheritance of a
character which has been acquired during the lifetime of the parent.
The quagga-ness--if one may be permitted to use such an expression--of
Lord Morton’s mare was acquired when she was put to the quagga or
shortly afterward, and was transmitted to her foals. A clearer case of
a character acquired during lifetime and transmitted to offspring could
not be imagined. Weismann does not absolutely deny the possibility of
the existence of telegony, but he would like more evidence. In the
Contemporary Review he writes, “I must say that to this day, and in
spite of the additional cases brought forward by Spencer and Romanes, I
do not consider that telegony has been proved.” And further: “I should
accept a case like that of Lord Morton’s mare as satisfactory evidence
if it were quite certainly beyond doubt. But that is by no means the
case, as Settegast has abundantly proved.” He would, in fact, refer the
case to reversion, and quotes Settegast to the effect that every horse
breeder is well aware that the cases are not rare when colts are born
with stripes which recall the markings of a quagga or zebra. We shall
return to this point later.
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