Concern over Wallace’s book [Contributions to the theory of natural selection (1870)] and its apparent backsliding from Darwinian theory. HWB suggests that only CD is capable of criticising the book.

HWB hopes not too much was made over his few comments on man in M. F. Somerville’s book [Physical geography, revised ed. (1870)].

Encloses A. R. Wallace’s reply [in which he says he will undertake revision of Descent if CD wishes]. HWB says this shows that Wallace is unaware of the scope of revision; suggests need for well-defined terms.

Books CD requested have been packed and sent.

He will present CD with the classified catalogue [of Royal Geographical Society].

He has not learned whereabouts of Thomas Staley.

Notes that Mr[s] Barber’s communication [forwarded by CD] will be published because of more striking than usual facts ["Notes on … larva and pupa of Papilio nireus", Trans. R. Entomol. Soc. Lond. (1874): 519–21].

Encloses Thomas Belt’s address.

Requests return of August Weismann’s letter which refers to eggs.

Curious about the drawing [of the caterpillar? See 10780].

It will give CD real pleasure to propose HWB for F.R.S. Asks that he send him the necessary information for the certificate as well as a list of men he would like to sign it. He should not be disappointed if not elected first time. [Bates elected F.R.S. 2 June 1881.]

Encloses HWB’s Royal Society certificate with seven signatures, which CD thinks is ample.

Informs HWB of arrangements for signing the memorial to W. E. Gladstone [for a civil pension for Wallace]. CD has got Duke of Argyll to write to Gladstone in favour of it.

Asks HWB to sign the memorial, possibly with official title, and then to pass it quickly to Hooker.

Alarm over Wallace’s memorial; asks HWB if he has received it and forwarded it to Hooker. Wanted to get it to Gladstone before Parliament met.

Gladstone has recommended yearly pension of £200 for Wallace.

Asks HWB to sign and return F.R.S. certificate for Raphael Meldola; if he objects to signing, CD will not mention the fact. [Meldola elected F.R.S., June 1886.]

Thanks for interesting letter which confirms belief that a good observer is a good theorist.

He is glad to hear that HWB, with his wide knowledge of natural history, has anticipated CD in many respects and agrees with the Origin.

Has been thoroughly attacked, especially by entomologists – J. O. Westwood, T. V. Wollaston, and Andrew Murray.

Glad HWB is writing on "equatorial refrigeration"; CD expresses his belief in north to south migration during glacial period.

Comments on the great extent of variations and on the acknowledgment of the new idea of greater female variety.

Expresses belief that the glacial period did affect the tropics, though HWB’s arguments have confounded him.

Poses a series of questions concerning sexual selection.

CD urges HWB to write on his travels;

asks for facts on domestic variations;

is pleased by HWB’s acceptance of the theory of sexual selection.

He still believes in migration from north to south during glacial age.

Hopes Bates will publish a paper on mimicry.

Recommends publisher for HWB; admires J. van Voorst but suggests Murray.

In reply to HWB’s letter [missing], comments on neuters and mimicry.

Thanks HWB for information on Volucella, although he does not know when he will use it.

Is glad HWB is beginning his book.

CD is beginning work on his orchid book.

Thanks HWB for references.

Praises his paper ["Contributions to an insect fauna of the Amazon valley", read before Linnean Society, 21 Nov 1861, Trans. Linn. Soc. Lond. 23 (1862) : 495–566] which solves "one of the most perplexing problems which could be given to solve".

Discusses the difficulties of writing and expresses disappointment at Wallace’s book [Travels on the Amazon (1861)].

Praises MS of first chapter of HWB’s book [The naturalist on the river Amazons (1863)]. Suggests he give common names and make comparisons to familiar English species to help readers. Suggests a few changes. Will speak strongly to Murray about publishing whenever HWB is ready.

Has been in bad health and has just read HWB’s MS in the last two days. Praises the book; assured it will be successful. Offers to write to Murray. Hooker interested in conclusions on colour.