No 24 Palace Gardens | Kensington
2 July 1856
Sir
Mr C Buxton1 has forwarded to me your note of the 23d June as to the hybrids of P. Versicolor which I bought at Knowsley2 & which certainly appear to breed freely between themselves as well as with the Common Pheasant—3 I have not however made any accurate experiments as to the degree of relationship between the hybrids so intermixing & by this time these degrees of relationship have been lost sight of
I am assured that the hybrids between the mallard & pintail are sometimes fertile inter se—which I mention as it bears on the same subject & may be interesting to you4
I am Sir | Yours faithfully | J H Gurney Charles Darwin Esq
Please cite as “DCP-LETT-1916,” in Ɛpsilon: The Charles Darwin Collection accessed on