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Darwin Correspondence Project

To George Busk   13 September [1871]1

Down, | Beckenham, Kent.

Sept. 13th

My dear Busk

I thank you heartily for your letter, which together with your Catalogue gives me, I think, all the information which I require.2 In a few days or a week I shall write the little which I require to say, & I will then perhaps ask you another question, for I suspect that in one place in your note you have writtnen word vibracula, for avicularia.—3 As I what I shall say will hardly be more than a page, if I require it, I daresay you will allow me to send the M.S. to you, as I shall be then certain not to misrepresent you.—4

with cordial thanks | yours very sincerely | Ch. Darwin


The year is established by the relationship between this letter and the letter from George Busk, 10 September 1871.
CD refers to the letter from George Busk, 10 September 1871, and Busk’s Catalogue of marine Polyzoa in the collection of the British Museum (Busk 1852–4).
CD probably refers to this passage: ‘With respect to the opposite or fixe〈d〉 beak—such a thing 〈is b〉y no means universally 〈pre〉sent even in well marked 〈vibr〉acula especially when 〈the m〉andible is rounded’, as only avicularia have mandibles (the articulated part of the ‘beak’).
CD probably sent Busk a draft of the section relating to marine Bryozoa that he added to Origin 6th ed., p. 194; see letter from George Busk, 16 October 1871.


CD plans to use notes provided by GB. [See Origin, 6th ed., p. 193.]

Please cite as

Darwin Correspondence Project, “Letter no. 7937,” accessed on 22 May 2018,

Also published in The Correspondence of Charles Darwin, vol. 19