Describes his research on cirripedes: an "anatomical and systematic catalogue". Asks to borrow specimens.
Down Farnborough Kent
I hope that you will forgive the liberty I take in addressing you, but having been in
correspondence with D
Can you lend me any species collected during
I believe it is generally admitted that the Cirripedia have been much neglected, & I hope that my work may be of some small service: if you can & are willing to assist me, I shall feel truly grateful.— I trust that our common pursuits & attachment to the good Cause of Natural History will excuse my thus writing to you, & believe me with much respect for all your labours,
Yours faithfully | C. Darwin
To | James D. Dana Esq
- f1 1250.f1See letters to Augustus Addison Gould, 3 September  and 20 August .
- f2 1250.f2These were probably the specimens from the Muséum d'Histoire Naturelle, Paris sent by Henri Milne-Edwards.
- f3 1250.f3Dana was naturalist to the United States Exploring Expedition, 1838–42. In addition to writing a report on the geology of the expedition (Dana 1849a), he was also preparing one on the Crustacea (Dana 1852–3). See letter to J. D. Dana, 8 October 1849, n. 4.