To William Yarrell [5 or 12 September 1842]
I feel too dull & languid to see anyone to day—so will you please give my compliments to Mr Bicheno1 & say how sorry I feel at being compelled to forego the pleasure of being introduced to him. If he has any questions (besides those which you asked me) & will take the trouble of writing them, if it lies in my power to give him any information I shall have great pleasure in doing so.—
I enjoyed my conversation with you yesterday, but the exertion knocked me up.— Do not forget when you see Sir J. Sebright2 to ask him whether the cross with the white Bantam brought back any of the “secondary male characters” to the hen-cock breed.
Believe me | dear Yarrell | Yours most truly | C. Darwin 12 Upper Gower St
CD is too dull and languid to see Mr Bicheno but will be glad to answer his questions if he writes.
Asks WY to ask J. Sebright "whether the cross with white bantam brought back any of the ""secondary male characters"" to the hen–cock breed".
Please cite as
Darwin Correspondence Project, “Letter no. 613,” accessed on 9 December 2016, http://www.darwinproject.ac.uk/DCP-LETT-613