Illustration of RF’s fossil cirripede specimens by J. de C. Sowerby.

AH may keep CD’s MS as long as he likes.

Comments on various cirripede species. "I mean now to continue at Systematic Part till I have finished."

Describes progress of research on fossil cirripedes. Comments on specimens sent by JS. Asks about age of several European formations, and for information about specimens.

Thanks for the information about a possible investment.

Parcel from AAG containing cirripede specimens has been received by CD from Hugh Cuming.

Thanks AH for specimens of cirripedes. Believes all species of Lithotrya bore.

Discusses possibility of providing B. J. Sulivan with a vessel for fossil hunting in Patagonia.

Asks RO to ask Mrs Dixon about borrowing cirripede specimen.

Details of his continuing water-cure regimen.

The Palaeontographical Society will give him only one plate for foreign species. Work should stop until he knows how many will fit in. He must know what progress has been made.

Thanks him for additional fossil cirripede specimens.

Agrees to reduce rent on farm because of bad times.

Mentions AH’s ["On the boring of the Mollusca into rocks", Ann. & Mag. Nat. Hist. 2d ser. 2 (1848): 225–48]. Discusses anatomy and habits of Lithotrya.

Thanks JGF for geological information.

Steenstrup’s cirripede specimens have been of great use and interest. CD has now described 33 fossil pedunculated cirripedes.

Asks for whatever numbers, since 1845, of the Journal [of the Royal Geographical Society] he, as a Fellow, is entitled to receive gratis.

Describes progress in illustration of fossil cirripede specimens. Thanks for answers to questions. Comments on hermaphroditism. Describes his discovery of parasitic male cirripedes.

Encloses a letter from J. D. Hooker [see 1257], thinking that WJH would like to see it.

Wants accurate information on "the economy of nature". Is interested in how far the struggle with other species checks the northern range of any species.

Thanks John Storey for information.

Urges dispatch on illustrations [for Fossil Cirripedia]; CD’s MS has been ready for some time and all depends on JdeCS. Suggests a way to hasten progress.

Discusses his account.

CD wants Lepadidae drawings [for Fossil Cirripedia] harder, with lines of growth more distinct; he wants no shading or similarity to lithography, which he thinks has harmed natural history. He realises that mutilated specimens may make accuracy difficult.