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Darwin Correspondence Project

To G. H. Darwin   13 October [1875]1

Down, | Beckenham, Kent.

Oct 13th

My dear George

Stanley Jevon’s letter has pleased me more than anything which I have read for many a long day.— Please say to Dr. J. that I am very much obliged for information & have ordered Dr [Cohens’s] book, so will give him no further trouble.—2 I think on the whole you you had better say nothing about profit— if there shd. be any, you might then say it was the Translator’s due.—3

I am very sorry to hear about sickness.— I am convinced that the craving for something tasting strong will wear away.— I do not in the least fear that if there is anything to be made out by your method with respect to viscous fluids, you will succeed— such energy as yours almost always succeeds.—4 Look at the success of your cousin papers, for these certainly have been highly successful.5

Yours affect | ⁠⟨⁠C. Darwin⁠⟩⁠


The year is established by the relationship between this letter and the letter from G. H. Darwin, 12 October 1875.
The letter from William Stanley Jevons to George has not been found, but see the letter from G. H. Darwin, 12 October 1875. CD probably refers to Gustav Cohn’s Untersuchungen über die Englische Eisenbahnpolitik (Investigations concerning English railway policy; G. Cohn 1874–83); the first two volumes appeared in 1874 and 1875. Many of CD’s investments were in railways (CD’s Investment book (Down House MS).
See letter from G. H. Darwin, 12 October 1875 and n. 2. Otto Zacharias had proposed arranging for a German translation of George’s work on cousin marriage (G. H. Darwin 1875a).
CD refers to George’s papers on marriages between first cousins (G. H. Darwin 1875a and 1875b; see n. 3, above) and possibly to his earlier paper ‘On beneficial restrictions to liberty of marriage’ (G. H. Darwin 1873).


Cohn, Gustav. 1874–83. Untersuchungen über die englische Eisenbahnpolitik. 3 vols. Leipzig: Duncker & Humblot.


Pleased by W. Stanley Jevons’ letter.

Has ordered Dr Cohn’s book.

Is sure that GHD’s energy will lead to success with work on viscous fluids.

Letter details

Letter no.
Charles Robert Darwin
George Howard Darwin
Sent from
Source of text
DAR 210.1: 48
Physical description
AL 3pp

Please cite as

Darwin Correspondence Project, “Letter no. 10196,” accessed on 26 March 2023,

Also published in The Correspondence of Charles Darwin, vol. 23