To Ferdinand Vandeveer Hayden   2 May [1870]1

Down. | Beckenham | Kent. S.E.

May 2nd.

Dear Sir

I am much obliged to you for your kindness & for the honour which you have done me in sending your Geological Report of the Yellowstone River & your Preliminary Field Report on the Colorado & New Mexico.2 I had heard of your Geological researches on the Colorado & was anxious to see the conclusions at which you had arrived, & I am therefore especially obliged to you for having sent me your works.

With much respect & my best thanks, I remain, | Dear Sir, | yours faithfully | Charles Darwin

LS

1
The year is established by the form of the address and the date of the publications mentioned (see n. 2, below). From April 1869 until May 1871, CD used stationery with ‘Bromley’ crossed out in the printed address and ‘Beckenham’ written in.
2
CD refers to Hayden 1869a and 1869b. CD’s copy of Hayden 1869a is in the Darwin Pamphlet Collection–CUL; his copy of Hayden 1869b has not been found. Hayden 1869b was submitted on 15 October 1869 (Hayden 1869b, p. 3).

Please cite as “DCP-LETT-7178,” in Ɛpsilon: The Charles Darwin Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-7178