Describes his research on cirripedes.
Comments on paper by AH ["Notice of a burrowing barnacle", Ann. & Mag. Nat. Hist. 2d ser. 4 (1849): 305–14]. Asks to borrow specimens.
Down Farnborough Kent
I trust to your kindness to forgive a stranger taking the liberty of addressing you. I have been for the last two years (at least such portions of it, as my health allowed me to work in) employed on a monograph, anatomical & systematic, of the Cirripedia; it was consequently with the greatest possible interest that I heard your admirable paper at Birmingham. I made a few remarks on the subject which will perhaps appear in the Athenæum. In S. America I collected an allied form, parasitic in the Concholepas & which probably will be included in the same order with your's, but which I think must certainly form a very distinct family.
I was very glad to hear from M
I trust that the great interest, which I have felt in your interesting discovery, will make you forgive my taking the liberty of asking you so great a favour as that contained in this letter.
I beg to remain. | With much respect | Yours faithfully
| C. Darwin
To | A. Hancock Esq
- f1 1253.f1CD returned to Down on 21 September 1849 (‘Journal’; Correspondence vol. 4, Appendix I).
- f2 1253.f2The paper, on Hancock's discovery of a new genus of boring Cirripedia, though read to section D (natural history, including physiology) at the meeting, was not published in the Report of the 19th meeting of the British Association for the Advancement of Science held at Birmingham in 1849 (see addenda, p. 125). It was published under a slightly different title in Annals and Magazine of Natural History (A. Hancock 1849b).
- f3 1253.f3Athenæum, no. 1143, 22 September 1849, p. 966. The report is reprinted in Collected papers 1: 250–1. See also letter to J. D. Dana, 24 February .
- f4 1253.f4CD refers to the specimen he originally named Arthrobalanus and later Cryptophialus minutus. Like Hancock's Alcippe, CD's barnacle was also a parasite which had the power to bore, and hence he suspected the two were allied. In his comments on Hancock's paper, CD compared Arthrobalanus to Alcippe: ‘Its main affinity to the genus described by Mr. Hancock lies in the number and position of the cirri and the great developement of the labrum:— the metamorphosis and organs of generation appear to be considerably different.’ (Collected papers 1: 250).
- f5 1253.f5Richard Taylor, editor and publisher of Annals and Magazine of Natural History.
- f6 1253.f6A. Hancock 1849b. CD's annotated copy is in the Darwin Library–CUL.
- f7 1253.f7Alder and Hancock 1845–55, issued in parts by the Ray Society. CD's annotated copy is in the Darwin Library–CUL.
- f8 1253.f8The first volume of Living Cirripedia was published in 1851. It is devoted to the Lepadidae or pedunculated Cirripedia, but the genus Alcippe is not described therein. CD did not suspect that Alcippe could be included among the Lepadidae until he examined it in 1853 (see Living Cirripedia (1854): 526–9, and the correspondence between CD and Hancock early in 1853, Correspondence vol. 5).