Encloses diagram illustrating difference between Chthamalus and Balanus. Specimens sent. Finds no Chthamalus in WT's collection.
Has read with much interest WT's book [The natural history of Ireland, vol. 1 (1849)].
Recommends E. S. Dixon's book [Ornamental and domestic poultry; their history and management (1848)].
Down Farnborough Kent
My dear Thompson
I have gone through 45 of your Book & found
much to interest me— The accounts of the Hawks &
Corvidæ,—in short wherever you treat much of habits, will, interest,
Have you seen Rev. E. S. Dixon (not Dickson) work on Poultry; it is very good & amusing.
I quite forget whether I told you, that I have quite lately made up my mind to go before the end of this month to Malvern for two months to see if there be any truth in the water cure.— It will lose me two months but if I can partly regain my health, it will indeed answer in every respect, for I am sure I have not worked more than 1 out of the 3 last months. I fear we shall not meet this Spring, without you remain till June in London.—
I am tired so no more— If you are in doubt about any Irish Chthamalus, pray send it me.
Your's most sincerely | C. Darwin
What labour your Book must have cost you!
- f1 1232.f1The diagram is at the end of the letter, and is on the verso of what appears to be the cover of Thompson's letter to CD, postmarked 27 February. A similar diagram appears in Living Cirripedia (1854): 39 and depicts these and three other genera in the Balanidae.
- f2 1232.f2Thompson sent CD ‘his very large collection’ of Balanus balanoides and also provided information concerning the range, habits, and growth rate of this species (see Living Cirripedia (1854): 272–3, and letter from William Thompson, 29 September 1848).
- f3 1232.f3CD is referring to the first volume of W. Thompson 1849–56. CD's annotated copies of the first three volumes of this work are in the Darwin Library–CUL. CD recorded having read them on 5 March 1849 (DAR 119; Correspondence vol. 4, Appendix IV).
- f4 1232.f4E. S. Dixon 1848. CD's annotated copy is in the Darwin Library–CUL. See letter to J. D. Hooker, 6 October , for CD's opinion of Edmund Saul Dixon.