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

Is sorry that any person has misunderstood his intentions. JEG read his papers on cirripedes at the Zoological Society without intending to interfere with CD’s work; he merely wished to record his old observations, made before CD commenced his study, and thought that by so doing he was helping CD. [See "Description of a new species of Anatifa" and "On Thaliella", Proc. Zool. Soc. Lond. (1848): 44.]

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.

Congratulations on CL’s knighthood.

Describes his cirripede work. Asks whether HM-E can arrange for him to borrowspecimens, especially of species described in Dumont d’Urville, Voyage of"Astrolabe" [1830–2]. Lists species that interesthim.

Compliments HM-E on his Crustacés [1834–40].

Describes his research on cirripedes. Asks to borrow specimens. Comments on previous work on the subject.

Concerning the measurements of Balanus specimens with respect to growth.

Send thanks for informing him of barnacles and asks that they be sent, directed to him, to the Geological Society.

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.

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.

Thanks for note and enclosure. Has written to [David?] Landsborough to say dried specimen was just what he wanted. Would like some more in spirits.

Very unwell.

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.

Gives details of the illness of R. W. Darwin.

Informs CD of the death of their father and the funeral arrangements.

CD fears he must wear Emma with his unwellness and complaints.

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

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

Obliged for drawings and coins. Cannot tell what the stone is.

Discusses his account. Mentions death of his father and his own inheritance.

Thanks JWL for the use of a schoolroom.

Arranges to meet JWL’s son [John] to discuss use of microscope.

Mentions illness.

Thanks JWL for his paper ["Shooting stars", London Edinburgh & Dublin Philos. Mag. 32 (1848): 81–8, 170–2; 35 (1849): 356–7].

Testimonial recommending B. Waterhouse Hawkins [for a teaching post].