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Darwin Correspondence Project

To C. G. Ehrenberg   25 March [1846]

Down Bromley Kent

March 25th

Dear & highly Honoured Sir

I received your kind letter two days ago, & beg to thank you sincerely for the information contained in it.—1 Herewith I send a copy of my little paper on the Atlantic Dust,2 (published in the Geolog. Journal) & which I would have sent ere this, had I supposed you would have cared to see it.—

I have asked the Hydrographer to the Admiralty (Capt. Beaufort) to call the attention of Officers to the dust & to collect specimens of it.

I have no specimens myself of grasses from Ascension, but I have written to Dr. Hooker & I well know he will proud to send you specimens if he has them: I doubt, however, whether he has yet named his grasses.

Sometime ago I sent you some specimens (through the Chev. Bunsen3 ) of rocks of the Secondary period from the Cordillera; shd you have examined them I shd esteem it a great favour to know the result.—

I regret much to hear of the long illness in your family: being a married man myself, I can appreciate your distress.

Pray believe me, dear Sir, with much respect. | Yours faithfully & obliged | C. Darwin

P.S. | I have received the Ascension plants from Dr. J. D. Hooker for you.—4 I enclose his note, as you might like to see the scanty list of really indigenous Phaneragam: plants.— You will observe there is only one certainly indigenous grass, or at most two.— Many plants have been of late introduced there.—


Letter from C. G. Ehrenberg, 11 March 1846.
Collected papers 1: 199–203.
Christian Karl Josias von Bunsen.
Presumably CD kept this letter open until he received the specimens from Joseph Dalton Hooker, sometime after 25 March (see letter from Hooker, [25 March 1846]). The specimens were sent to Ehrenberg by 10 April, see letter to J. D. Hooker, 10 April [1846].


Collected papers: The collected papers of Charles Darwin. Edited by Paul H. Barrett. 2 vols. Chicago and London: University of Chicago Press. 1977.


Sends copy [of "Fine dust in the Atlantic Ocean", Collected papers 1: 199–202]. Attempting to obtain further samples for CGE.

Please cite as

Darwin Correspondence Project, “Letter no. 965,” accessed on 15 October 2019,

Also published in The Correspondence of Charles Darwin, vol. 3