To H. T. Stainton 28 February 1
Down. | Bromley. | Kent. S.E.
My dear Mr Stainton
As you said you would be so good as to write again I trouble you with one other question.2 I want to distinguish, as far as I can, sexual & protective colouring. Now do the females of the common Brimstone & common Orange-tips emerge from their cocoons & haunt the same places, mingled with large & small Cabbage Butterflies, for which, it is possible, they might be mistaken by birds, & thus escape danger.—3
Yours very sincerely | Ch. Darwin
Asks whether the colouring of particular butterflies has any protective function, to ascertain whether the function is other than sexual.
Please cite as
Darwin Correspondence Project, “Letter no. 5949,” accessed on 13 February 2016, http://www.darwinproject.ac.uk/DCP-LETT-5949