Summary

CD makes progress with barnacles. Describes "supplemental" males in detail. In working out metamorphosis, their crustacean homologies followed automatically.

CD opposes appending first describer’s name to specific name.

Summary

Though correspondence has never ebbed so low, CD is constantly in his thoughts.

Observations on cheetahs used as domesticated hunting animals.

Finds geographical barriers sometimes separate species, but also finds species that remain separate where there are no barriers to migration.

Colour "individuates" isolated animal species.

Plains and alpine animal distribution show altitude not strictly analogous to latitude.

Impact of timber cutting on climate has led to extinction of crocodiles.

Will discuss coal formation in letter to Edward Forbes.

CD often asked whether isolated mountains in southern latitudes had closely allied representatives of Arctic and north temperate plants; JDH has found a representative barberry.

Making for Darjeeling via Calcutta.

Summary

Confident of species theory as result of applying it to cirripede sexual systems.

CD’s opinion of E. Blyth. JDH should meet Blyth, inquire about domesticated varieties, study insular flora, solve coal-plant problem.

Summary

Sir John Herschel has not received the parcel of "Scientific Instructions", which was posted on the 15th. He requests an accurate search at the Admiralty.

Summary

Brian Hodgson reading CD’s Journal of researches with delight.

Forwarding breeding pamphlets.

JDH recommends P. S. Pallas on degeneration.

CD’s facts on sex in barnacles startling.

Hugh Falconer’s health.

Summary

Thanks LA and sends thanks to A. A. Gould for specimens. Describes principal findings of his research on cirripedes. Is obliged for information Joseph Leidy gave about cirripede eyes. Describes anatomical features and chief aspects of growth. Describes discovery of parasitic males and a species parasitic upon other cirripedes.

Summary

Describes his new microscope and its advantages for dissecting. Suggests RO might discuss topic [in his contribution to J. F. W. Herschel, ed., Manual of scientific enquiry (1849)].

Summary

Thanks for present of fossil Balani.

Thanks also for JS’s request to David Landsborough to send barnacle specimens.

Summary

CD will write to A. A. Gould for aid. Thanks for sympathy and assistance about chloroform.

Summary

Returns letters [from her son, J. D. Hooker, in India].

Asks that B. H. Hodgson’s zoological pamphlets be sent to him at Athenaeum.

Summary

Discusses loan of cirripede specimens from the British Museum and problems of classification. Encloses a note of thanks to be laid before the Trustees [see 1153].

Summary

Apologises for length of notes of advice for microscopic work.

Summary

Hugh Falconer’s misbehaviour.

Waiting out rains at Brian Hodgson’s.

Will make botanical transverse section of Himalayas from plains to snow.

Arrangements to pass Sikkim Rajah’s territory.

No evidence of glacial or diluvial action in sub-Himalayan mountains. No evidence of detrital coal formation.

Hodgson’s replies to CD on introduced species and hybrids.

Summary

It had been suggested to CD that JEG intended to anticipate some of his work on the Cirripedia. CD doubted this because JEG had suggested that CD commence the work and has assisted throughout; however, CD sought assurances regarding JEG’s intentions as he wished that "what little novelty there yet remained in the subject, should be the reward of my work". CD apologises for having spoken to JEG on the subject and will communicate JEG’s assurances to those who had expressed their opinions regarding JEG’s intentions.

Summary

Thanks the Trustees of the British Museum for entrusting to him the collection of Cirripedia and allowing him to disarticulate one specimen of each species.

Summary

Thanks him for Balanus specimens. Comments on his findings. A large Acasta in the wet state would be valuable. Asks JSB to mention his work to J. T. Quekett at the College of Surgeons.

Summary

Comments on apology by Chambers for using some of CD’s material without acknowledgment in discussing Glen Roy. His opinion of Chambers’ book [Ancient sea-margins (1848)].

Summary

Anxiety about R. W. Darwin’s health.

Summary

Asks about collection of mollusc specimens he had lent to Richard Owen.

Asks about seeing cirripede collection of the College.

Comments on larva of Scalpellum.

Summary

Thanks for sending cirripedes. Cannot make out the label, so can JCR tell him the bank and the depth. Hopes to keep the specimens for 6 or 8 weeks before returning them.