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Letter 7178

Darwin, C. R. to Hayden, F. V.

2 May [1870]


Thanks for copies of FVH’s “Preliminary field report [of the U. S. Geological Survey] of Colorado and New Mexico” [Am. J. Sci. 49 (1870): 258–63] and Geological report [of the exploration] of the Yellowstone [and Missouri] River[s under the direction of Captain W. F. Reynolds (1869)].


Down. | Beckenham | Kent. S.E.

May 2nd.

Dear Sir

I am much obliged to you for your kindness & for the honour which youhave done me in sending your Geological Report of the Yellowstone River& your Preliminary Field Report on the Colorado & New Mexico.f2 I hadheard of your Geological researches on the Colorado & was anxious tosee the conclusions at which you had arrived, & I am therefore especiallyobliged to you for having sent me your works.

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

Smithsonian Institution Libraries: Dibner Library ofHistory of Science and Technology



The year is established by the form of the address and the date ofthe publications mentioned (see n. 2, below). From April 1869 untilMay 1871, CDused stationery with ‘Bromley’ crossed out in the printed address and‘Beckenham’ written in.
CD refers to Hayden 1869a and 1869b. CD’s copy of Hayden 1869a isin the Darwin Pamphlet Collection–CUL; his copy of Hayden 1869b hasnot been found. Hayden 1869b was submitted on 15 October1869 (Hayden 1869b, p. 3).
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