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Darwin Correspondence Project

To Romain Moniez   10 October 1880

Down, | Beckenham, Kent. | (Railway Station | Orpington S.E.R.)

October 10th 1880

Dear Sir

I am very much obliged to you for your great kindness in having sent me a copy of your work on parasitic worms.1 The subject has always interested me, & I am sure that I shall profit by reading your work.2

Believe me Dear Sir | Yours faithfully & obliged | Charles Darwin


Moniez probably sent CD a copy of his study of the larvae of tapeworms, Essai monographique sur les cysticerques (Moniez 1880).
CD had collected parasitic worms during the Beagle voyage (see Correspondence vol. 17, letter to T. S. Cobbold, 9 August [1869]). In Origin, p. 70, he noted that when animals of the same species were crowded into a small space epidemics ensued, caused in some cases by parasitic worms, which flourished in such situations because of their facility of diffusion among crowded animals.


Moniez, Romain. 1880. Essai monographique sur les cysticerques. Vol. 3, fascicule 1 of Travaux de L’Institut zoologique de Lille. Paris: Octave Doin.

Origin: On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. By Charles Darwin. London: John Murray. 1859.


Acknowledges receipt of R-LM’s book on parasitic worms. [Perhaps Essai monographique sur les cysticerques (1880) in vol. 3 of the Travaux of the Institut Zoologique de Lille.]

Letter details

Letter no.
Charles Robert Darwin
Romain-Louis (Romain) Moniez
Sent from
Source of text
Pierre Bergé (dealers) (22 November 2010, lot 63)
Physical description
ALS 1p

Please cite as

Darwin Correspondence Project, “Letter no. 12751A,” accessed on 1 December 2023,