Asks opinion of his proposal to Bartholomew Price to translate and publish C. K. Sprengel [Das entdeckte Geheimniss (1793)] and Hermann Müller [Die Befruchtung der Blumen (1873)] in one volume.

Supports Torbitt. Keenly aware of danger of growing crops from a single variety. Torbitt’s paper to Belfast BAAS meeting ["On the potato-disease", Rep. BAAS 44 (1874): 134] was sat upon.

Has written to Farrer in support of Torbitt’s grant.

Resistance of Liberian coffee to "fly" and susceptibility to fungus.

Has been consulting with Mrs Lyell about the possibility of publishing Lyell’s letters. Asks CD’s opinion on the matter.

JDH’s scheme for lowering F.R.S. fees by creating a fund through membership subscription.

JDH details the subscription fund’s finances.

Has finished lecture for Royal Society on N. American plant distribution.

Burdened with Anniversary Address to the Royal Society.

Quips that even Huxley is running out of speeches.

Frank asked to summarise work with CD for use in JDH’s Royal Society address.

Work with A. Gray shows Colorado plants closer to Altai than to E. or W. America.

Work with J. Ball shows Moroccan plants very distinct from nearby Canaries.

JDH on Royal Commission to Paris Exhibition.

Botanical evidence is against F. B. White’s origin of St Helena fauna. JDH holds flora is S. African. Since plants must arrive before insects, if fauna is Palearctic then flora survived glacial period. Flora not Miocene since old and relic orders are absent. Suggests S. African west coastal mountains as insects’ origin.

Congratulates CD on the Anthony Rich bequest.

Sad but relieved to retire as President of the Royal Society.

Describes battle with Treasury over use of an empty house at Kew.

Urges Frank to reconsider his refusal of Cambridge Examinership.

JDH criticises John Ball’s theory of origin of higher plants in Carboniferous highlands, where low carbon dioxide levels permitted survival.

JDH looking for a gardener for CD’s unusual needs.

JDH requests specimens from Miss [Sophy] Wedgwood.

Congratulations on Erasmus Darwin; likes CD’s part better than Ernst Krause’s.

Received false notice of Asa Gray’s death.

Gray and JDH engaged in comparing widely separated but floristically similar regions.

Argues against pension for Wallace because of his spiritualism; the underhanded way he brought about discussion of spiritualism at BAAS; his pocketing money from a bet on the sphericity of the earth; his lack of absolute poverty.

Does not give much for botanical results of Round Island, but the zoology is wonderful.

Lyell’s new book [The student’s elements of geology (1870)]. Urges Lyell to make it Elementary principles.

Grove is disgusted with CD for being disquieted by William Thomson: "Take another dose of Huxley’s penultimate address to Geol. Soc." [Q. J. Geol. Soc. Lond. 25 (1869): 28–53].

Sends enclosure [a letter from Lady Lyell?]. He is choking with vanity.

Is going to send Willy to Mr La Touche in Salop; he brought up young Colenso and Frank Lyell. Some of his friends will think he is sending his son into a nest of young adders!

Willy is back from New Zealand. JDH perturbed by what to do with him.

J. W. Dawson’s Bakerian lecture for Royal Society is full of errors, and JDH is forced to recommend that it not be published. [An abstract of the lecture was published: "On the pre-Carboniferous floras of north-eastern America", Proc. R. Soc. Lond. 18 (1869–70): 333–5.]

Hibiscus and Nolana seeds not harvested at Kew. Sends list of the best plants of Lilium he can give.

Asks CD for name of work on orchids mentioned in his supplementary paper ["Fertilization of orchids", Collected papers 2: 138–56].