My dear M^r 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