To John Lubbock 16 [March 1859]1
Very many thanks for your most useful note: I was quite in error about aphis.—2
I shall be most truly glad to see you on Saturday if you are able to come.— If I shd. turn bad in time to let you know, I would send down, but I hope I may not.—
I have stumbled on one of my M.S. reference to paper of L. Dufour, in Annal des Sc. (3d series) Tom 3. p. 79, in which he says, (if I have not misunderstood him) that in certain degraded Diptera, the ovarian vesicle assumes the shape “ebauche”, in the ovary, of the pupa:—(p. 87) “at no time assumes the form of larva”.—3
Would you be so very kind as to look at this paper, & give me your opinion when we meet on Saturday.
Yours very truly | C. Darwin
Wants JL’s opinion on paper by L. J. M. Dufour ["Études anatomiques sur les insectes diptères de la famille des pupipares", C. R. Hebd. Acad. Sci. 19 (1844): 1345–55].
Please cite as
Darwin Correspondence Project, “Letter no. 2434,” accessed on 9 December 2016, http://www.darwinproject.ac.uk/DCP-LETT-2434