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Darwin Correspondence Project

To John Lubbock   12 November [1881]1


Nov. 12th

My dear Lubbock—

I think that your sentence will do excellently about the Glacial Lakes.—2

I am very glad you thought about the Dimorphism of Butterflies—it seems to me well worth inserting.— I cannot clearly recall to mind about the Leptodora,—it seems to come in rather oddly after the Butterflies.3

Ever yours | C. Darwin


The year is established by the reference to Lubbock 1881a (see n. 2, below).
CD was commenting on a text for the published version of Lubbock’s presidential address to the British Association for the Advancement of Science, which had met in York from 31 August to 7 September (Lubbock 1881a). He had previously commented on a draft of the address that Lubbock had sent in August (see letter to John Lubbock, 2 August 1881). On the formation of glacial lakes, see Lubbock 1881a, pp. 22–3.
For the discussion of dimorphism in butterflies and two developmental forms of Leptodora (a genus of water fleas), see Lubbock 1881a, pp. 7–8.


Lubbock, John. 1881a. President’s address. Report of the 51st Meeting of the British Association for the Advancement of Science, held at York (1881): 1–51.


JL’s sentence about glaciation will do excellently. Is glad JL thought about dimorphism of butterflies.

Letter details

Letter no.
Charles Robert Darwin
John Lubbock, 4th baronet and 1st Baron Avebury
Sent from
Source of text
Sotheby’s (dealers) (11 July 2017)
Physical description
ALS 1p

Please cite as

Darwin Correspondence Project, “Letter no. 11743F,” accessed on 20 July 2024,