Summary

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.

Summary

Details of his continuing water-cure regimen.

Summary

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.

Summary

Thanks him for additional fossil cirripede specimens.

Summary

Agrees to reduce rent on farm because of bad times.

Summary

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.

Summary

Thanks JGF for geological information.

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

Summary

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

Summary

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

Summary

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

Summary

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.

Summary

Discusses his account.

Summary

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.

Summary

Discusses depths at which ripple-marks appear on sea-floor.

Personal and social comment.

Mentions receiving Agassiz’s Lake Superior [1850].

Summary

CD is pleased with the drawings for Fossil Cirripedia but wants a few corrections which he would like very soon.

Summary

On Himalayan stratigraphy. Believes JDH’s observations of glacial action are the first ever done east of Urals.

Barnacles and the species theory; impressed with variation.

Effect of CD’s species sketch on JDH’s view of willow systematics.

Summary

Thanks LA for presentation copy of his book, Lake Superior [1850].

Comments on species of cirripedes sent by LA and A. A. Gould.

Summary

Asks him to send additional cirripede specimens.

Summary

Has received plates. Gives instructions for scale and arrangement of engravings.

Summary

An enquiry about the availability, size, and cost of cork-lined boxes for entomological collections.