Editions, but have not been able to find one.
The difference between "A. M." and "The Savoyard" is clearly one of
different editions. Darwin appears to have been ashamed of the
inconsequent inference suggested, and to have withdrawn it. - Ed. the
Press.)
DARWIN ON SPECIES: [From the Press, 22nd June, 1863.]
To the Editor of the Press.
Sir - I extract the following from an article in the Saturday Review
of January 10, 1863, on the vertebrated animals of the Zoological
Gardens.
"As regards the ducks, for example, inter-breeding goes on to a very
great extent among nearly all the genera, which are well represented
in the collection. We think it unfortunate that the details of these
crosses have not hitherto been made public. The Zoological Society
has existed about thirty-five years, and we imagine that evidence
must have been accumulated almost enough to make or mar that part of
Mr. Darwin's well-known argument which rests on what is known of the
phenomena of hybridism. The present list reveals only one fact
bearing on the subject, but that is a noteworthy one, for it
completely overthrows the commonly accepted theory that the mixed
offspring of different species are infertile inter se. At page 15
(of the list of vertebrated animals living in the gardens of the
Zoological Society of London, Longman and Co., 1862) we find
enumerated three examples of hybrids between two perfectly distinct
species, and even, according to modern classification, between two
distinct genera of ducks, for three or four generations.
