In reading Variation, notices CD has not observed that after mallards have been domesticated their claws turn from black to white.
April 17. 1868
My dear Sir
I have had during the past few days the pleasure of reading your valuable & interesting book on ``The Variation of Animals &c under domestication''—
—As an ornithologist in a very small way I have read with
great interest your Chapter on Ducks &c But I do not notice
that you have observed a change that I fancy takes place in
Mallards when becoming domesticated— it is this that in the
wild Duck the claws are black whereas in the tame ones they are
white I think I have noticed this in several cases & take the
liberty of informing you—as it may have escaped your
observation &—should there be anything in it & your book
reaches a 2
I have taken the liberty of forwarding you this letter through
the hands of your publisher M
I am D
The | Rev
- f1 6126.f1The reference is to Variation.
- f2 6126.f2For the section on ducks, see Variation 1: 276--87. CD discussed changes in wild ducks under domestication in Variation 2: 262--3; no changes were made in the second edition (Variation 2d ed., 2: 250).
- f3 6126.f3John Murray.