Leschenaultia seems very odd. Will try with pollen left on for 48 hours. Illustrates diversity of structures for same purpose.

Bentham’s and Oliver’s good opinion of Orchids is reassuring.

Anxious to experiment on Melastomataceae; thinks it will give important results.

Wants Leschenaultia formosa to try whether viscid outside surface can be fertilised.

No summary available.

Does not know Rhododendron boothii; is sending Rhododendron keysii, a remarkable form. Will send Melastomataceae anon.

Sends two flowers of Vanilla and two Melastomataceae.

Has worked on Cameroon list ["Mountain flowering plants and ferns of the Cameroons", in Burton, Abeokuta and the Cameroons Mountains (1863) 2: 270–7]

and Genera plantarum.

Has received Melastoma and Vanilla.

Has seen again the two sets of plants of Heterocentron raised from two lots of pollen from same flower – a marvellous difference in stature.

"But oh Lord what will become of my book on variation: I am involved in a multiplicity of experiments."

Observations on Viola.

CD’s fancied dimorphism of Oxalis is all a confounded mistake; only great variability in length of pistils.

Found Henslow’s life [L. Jenyns, Memoir of the Rev. J. S. Henslow (1862)] interesting but fears the public will think it dull.

Oliver has written able paper on dimorphism for Natural History Review [n.s. 2 (1862): 235–43].

CD’s account of Viola is novel and interesting.

Has finished Cameroon mountain plants.

Jury work at exhibition.

Domestic problems – wife is ill, no cook, etc.

Sorry to hear of Mrs Hooker’s health and domestic problems. Wishes natural selection had produced neuters who would not flirt or marry.

Will be eager to hear Cameroon results.

Wishes JDH would discuss the "mundane glacial period". Still believes it will be "the turning point of all recent geographical distribution".

Pollen placed for 65 hours on apparent (CD still thinks real) stigma of Leschenaultia has not protruded a vestige of a tube.

"Oliver the omniscient" has produced an article in Botanische Zeitung with accurate account of all CD saw in Viola.

Asa Gray’s "red-hot" praise of Orchids [Am. J. Sci. 2d ser. 34 (1862): 138–51].

Household problems: wife’s health, visitors to Kew.

Will go to sale of J. C. Ross’s effects looking for glacial and Kerguelen Land works not at British Museum.

Has been ill (violent skin inflammation).

Has done hardly anything except tend to his experiments. Repeating Primula work has verified former results and very curious facts on sterility of homomorphic seedlings.

Wonders who reviewed Orchids for London Review & Wkly J. Polit..

Asa Gray also infatuated with Orchids.

M. J. Berkeley wrote London Review & Wkly J. Polit. article.

CD is "out of sight the best physiological observer and experimenter that Botany ever saw".

Laments how much he [JDH] missed when doing the Listera ["Functions and structure of the rostellum of Listera ovata", Philos. Trans. R. Soc. Lond. 144 (1854): 259–64].

Illness of wife and father.

"More plants from Fernando Po and more European".

Remembers JDH’s encouragement when he was "utterly weary of life".

Marvellous about European forms in Fernando Po.

C. V. Naudin will publish a book on hybridity ["Nouvelles recherches sur l’hybridité dans les végétaux", Nouv. Arch. Mus. Hist. Nat. Paris 1 (1865): 25–176; part also in Ann. Sci. Nat. (Bot.) (1863)].

CD fears Naudin has underestimated distribution of pollen by insects.

Melastomatous plants are ready for his work on meaning of two sets of anthers.

Very curious about Masdevallia.

George [Darwin] observing orchids.

Adaptation of Herminium beats almost every other orchid.

Will see to Masdevallia and Bonatea.

Domestic matters.

Lyell’s health.

CD’s eczema.

Hopes CD will solve the mystery of Melastoma.

JDH’s trip to Switzerland with his wife.

Has seen Oswald Heer’s fossils, including a leaf, apparently dicotyledonous, from the Lower Lias in Jura.

Value of insect and crustacean fossils for systematic determination.

JDH "impressed with identity of physical features and what wonderful analogy of biological [features] between Alps and Himalayas".

No summary available.

Wife’s health improved by trip.

Heer’s collections convince JDH that Miocene vegetation was Himalayan, not American, as Heer supposed.

Zurich promises to be a good natural history school.

Review of Natural History Review in Parthenon [1 (1862): 373–5].

Illness of his son [Leonard]. Has done no work for weeks.

JDH’s hybrid orchids are interesting; CD is surprised many hybrids are not produced.

George [Darwin] caught a moth sucking Gymnadenia conopsea with a pollen-mass of Habenaria bifolia sticking to it.

No summary available.

No summary available.

Observations on Welwitschia.

Lythrum. Wants to examine fresh flowers of Lythraceae. Lythrum salicaria has interested him very much.

Microscopes.

Asks whether JDH can think of plants that have different coloured anthers or pollen in same flowers (as in Melastoma) or on same and in different plants as in Lythrum. Would be a safe guide to dimorphism.

Observation of action of pollen in Linum grandiflorum.