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Darwin Correspondence Project

To David Forbes   31 July [1870]1

Down. | Beckenham | Kent. S.E.

July 31st

My dear Mr Forbes

I write a line to thank you very sincerely for your great kindness in sending me the proof-sheets of your paper on the Aymaras, of which I have received up to p. 272, which I presume is not far from the end.2 It is a most interesting & valuable memoir, & I have been extremely glad to read it before going to press; but the information which you gave me was so substantially correct, that I have had to alter hardly anything. I shall, however, instead of giving some figures refer in most cases my readers to your full details.—3

Whatever share I have had in hurrying you to publish has been a right good deed on my part.—

With very true thanks | Yours sincerely | Ch. Darwin

P.S. This appears to me an important erratum

p. 221 10 lines from bottom for longer read shorter4


The year is established by the relationship between this letter and the letter from David Forbes, 30 July 1870.
In Expression, p. 318, CD cites Forbes 1870a on the subject of blushing.
This correction was made in the published version of Forbes 1870a.


Expression: The expression of the emotions in man and animals. By Charles Darwin. London: John Murray. 1872.


Thanks DF for proofs of his paper on Aymara Indians.

Letter details

Letter no.
Charles Robert Darwin
David Forbes
Sent from
Source of text
American Philosophical Society (Mss.B.D25.381)
Physical description

Please cite as

Darwin Correspondence Project, “Letter no. 7292,” accessed on 22 October 2021,

Also published in The Correspondence of Charles Darwin, vol. 18