John Lubbock’s lecture on man a success [Not. Proc. R. Inst. G. B. 4 (1863): 29–40].

JDH on the effect of the Civil War on Asa Gray.

JDH’s opinion of Lyell on glaciers is improving.

JS criticises natural selection as based on an innate "continuously watchful selective principle".

Seeks seed of wild Rocky Mountain maize.

What is CD’s view on origin of maize?

Seeks information on self-sterility of Passiflora and Lobelia.

Weeping habit of trees.

Intended to say bisexual plants presented more established varieties than unisexual, not that they are more variable.

Explains his opinion that homomorphically fertilised Primula will produce only their own form. Is trying homomorphic crosses with different coloured Primula varieties.

Asks to read Asa Gray’s 2d review of Orchids.

Has finally successfully fertilised Gongora, but it was done by unnatural means.

Sum due to CD is £11 13s 1d. Offer £5 for remaining stock of South America and Volcanic islands.

CD relates Asa Gray’s pleasure over HWB’s paper and Gray’s plans to write abstract [Am. J. Sci. 2d ser. 36 (1863): 285–90].

At CD’s request HBD has traced the quotation; it is on regeneration from Charles White in W. B. Carpenter’s Comparative physiology (1854), p. 480.

Is gratified that CD thinks some of the arguments in his book [Lectures on the germs of disease (1861)] are satisfactory.

Sends copy of his December letter [see 3851], which he fears is lost.

Has been in the Southern Alps and has discovered a wonderful pass.

Ill health.

At work on Variation.

Reading JDH on Welwitschia.

Letter from Lyell defends his position on species.

Anger at Owen.

John Lubbock’s lectures.

Thanks for information on weeping trees; asks for a few weeping elm seeds.

The double peach is in flower; the almond has not flowered; will beg a specimen of fruit later.

Has been unwell.

Tells of Hooker’s admiration for TR’s articles.

Accepts offer of £5 [for remaining stock of Geology of "Beagle"].

Orders postage stamps for son.

Thanks for information [on regeneration quotation].

Lyell’s position on mutability.

Directions for care of hothouse plants.

Falconer hostile to Lyell’s book.

JDH’s Wedgwood ware collection.

Thanks CD for his review [of H. W. Bates’s paper on mimetic butterflies, Collected papers 2: 87–92].

Is glad Hooker approved of his [JL’s] lecture.

Comments at length on CL’s book [Antiquity of man (1863)]. CD is "greatly disappointed that you have not given judgment and spoken fairly out what you think about the derivation of species".

Lists large number of queries concerning minor points.

Praises especially the chapters on language and glaciers.

Comments on the temperature of Africa during the glacial period, especially with regard to the views of Hooker.

Mentions Owen’s paper on the aye-aye [Rep. BAAS 32 (1862) pt 2: 114–16].

Answers JS’s criticism of natural selection, which he doubts JS understands. CD does not believe in an "innate selective principle".

To understand "utility" JS should read CD on correlation.

Origin of maize: no longer thinks husked form was wild because of Asa Gray’s evidence on its variability.

Has information from Thomas Rivers on weeping habit in trees.

JS’s experiments on coloured primroses.

Encloses bibliographical note on Passiflora.

Has quoted WDF on crossing white and slate muscovy ducks [Variation 2: 40]. When not crossed, do these breed true?

Will also quote him on Mr Woodd’s white ewes that produced black lambs by a ram with only black spots [Variation 2: 30].

Cheque for books, stamps for CD’s son.

Will send portion of copied manuscript [of Variation 2: 8–10] for WB to examine. Asks about inherited abnormalities of the eye.

Receipt for cheque enclosed.

Defends position he takes on species [in Antiquity of man]. CD overestimates CL’s capacity to influence public. Will not dogmatise on descent of man; prepared to accept it, but it "takes away much of the charm from my speculations on the past". Cannot go to Huxley’s length with regard to natural selection. Responds to CD’s comments on Antiquity of man.

Sends a sentence, quoting JP, on inherited peculiarities in eye-brows. Asks whether he may use it in his chapter on inheritance [Variation, ch. 12].