Responds to correspondent’s request for information about shells from the Coquimbo beds in Chile. Difficulty in deciding on age of deposits and species. Notes views of Alcide d’Orbigny.

Asks to re-examine specimen of Scalpellum. Discusses publication [of Fossil Cirripedia] by Palaeontographical Society.

Asks to borrow C. L. Brehm’s book [Handbuch der Naturgeschichte aller Vögel Deutschlands (1831)]. Wants to see how far Brehm went in splitting species.

Took finches from Madeira to British Museum.

Sends presentation copy of Fossil Cirripedia.

Returns cirripede specimens to AAG. Encloses specimens for Louis Agassiz in same box.

Since AAG is a member of the Ray Society, will not send him a copy of Living Cirripedia, vol. 2.

If AAG is no longer member of the Ray Society, CD would like to send copy of Living Cirripedia, vol. 2.

Sends blood of pigeons for examination. Discusses variation of blood in related animals.

Would like copy of book edited by GG [The works of W. Hewson (1846)].

Suggests investigation of blood in varieties of domesticated animals.

Thanks for offer of Helix for experiment. Asks for assistance. Mentions failure of his own experiment involving Helix pomatia.

Supports nomination of John Lindley for award of Royal Medal of the Royal Society.

Thanks LA for presentation copy of Contributions [to the natural history of the United States of America, vol. 1, pt 1: Essay on classification, and vol. 1, pt 2: North American Testudinata (1857)]. Flattered; CD sees there is much of highest interest to him.

Has given proxy according to James Paget’s request. Almost sure it is in favour of [J. A.?] Kingdon [for election to Athenaeum?].

Sends copy of Origin.

Sends additional notes.

Thanks LA for Methods of study [1863].

Is gratified that he has not taken a personal dislike to CD, though he is strongly opposed to nearly everything CD has written.

Hopes Richard Owen will have time to do CD’s shells in spirits.

Doubts WJB’s suggestion that moles may play a part in formation of mould.

Thanks HWB for bringing "the question of sexes" before the Entomological Society. Feels he will come to some conclusion by comparison of numerous observations.

It appears Pangenesis "will expire unblessed and uncursed by the world".

Has enjoyed reading LA’s book [Études sur les glaciers (1840)].

Hopes LA will pardon manner in which CD has alluded to his work on glaciers in his Journal of researches, of which he sends a copy.

[Excerpt copied from a letter CD wrote to WHF.]

CD’s gratefulness to William Buckland for his guidance on the glaciated terrain of N. Wales. "I am also convinced that the valleys of Glen Roy … have been occupied by arms of the Sea, & very likely, (for on that point I cannot of course doubt Agassiz & Buckland) by glaciers also."

Thanks LA for information on sexual differences in the coloration of Amazonian fish. CD was anxious to know how the sexes differed because they are unusual in that the male has the largest share in looking after ova and young.

Would have liked to come to lunch, but has been talking so much to Hooker that he has no strength left.