Will speak to Richard Owen, Henry De la Beche, and Robert Hutton concerning appointment for EC.

Leaving for sea-side on Saturday.

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.

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

Thanks for note.

Glad DS sticks to cleavage and foliation question. Bernhard Studer one of few to take correct view on subject.

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.

He can distinguish varieties of guinea-fowl as soon as birds are hatched.

Behaviour of Malay hens.

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.

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.

Congratulations on CL’s knighthood.

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.