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Darwin Correspondence Project

DCP-LETT-7723

To F. T. Köppen   28 April [1871]1

Down. | Beckenham | Kent. S.E.

April 28th

Dear Sir

I am greatly indebted to you for your valuable present of your Heuschrecken in Südrussland & for your interesting letter.2 I have no doubt I shall find much matter of value to me in your volume; but unfortunately I am a poor German scholar & read the language with much difficulty, which has been an irreparable loss to me.— The facts which you mention in your letter in relation to the increase of mice &c from the invasion of the grasshoppers are very curious; & it is a subject which always possesses a special interest for me.3

With much respect & my best thanks, I remain | Dear Sir | Yours faithfully | Ch. Darwin

Footnotes

1
The year is established by the relationship between this letter and the letter from F. T. Köppen, 25 April 1871.
2
CD refers to Köppen 1865 (On locusts in south Russia) and to the letter from F. T. Köppen, 25 April 1871.
3
CD touched on a similar relationship between mammal, insect, and plant in Origin, pp. 73–4, where he discussed the interactions of bees, cats, and mice in clover fields.

Letter details

Letter no.
DCP-LETT-7723
From
Darwin, C. R.
To
Köppen, F. T.
Sent from
Down
Source of text
Russian Academy of Sciences, Moscow
Physical description
2pp

Summary

Thanks for FTK’s locust paper ["Die geographische Verbreitung der Wanderheuschrecke", Petermann’s Geogr. Mittheil. (1871)].

Please cite as

Darwin Correspondence Project, “Letter no. 7723,” accessed on 14 February 2016, http://www.darwinproject.ac.uk/DCP-LETT-7723

letter