Has examined Leschenaultia and concludes the external viscid surfaces have nothing to do with the stigmatic surface. Agrees with CD’s style and nectary conclusions; accounts for their form and position in irregular flowers by describing floral development.

[Enclosed are some queries by CD with answers by JDH. Gives information on seed setting by Mucuna

and an opinion on the abruptness of N. and S. limits of plant ranges.]

John Scott’s paper [see 4332] read at Linnean Society; praised by George Bentham.

Himalayan pine in Macedonia.

JDH is in a quarrel with H. C. Watson.

Has been looking at separation of sexes in poplars.

Interested in reversion.

Does not understand all CD said on inheritance.

JDH now remembers that Origin was "published" some time before it was "distributed" and therefore appeared prior to his own essay [see also 2478].

Impossible to say whether some Dipterocarpaceae survived a cold period or have developed since.

CD’s divergent series explains those anomalous plants that hover between what would otherwise be two species in a genus.

Inclined to see conifers as a sub-series of dicotyledons that developed in parallel to monocotyledons, but retained cryptogamic characters.

Mentions H. C. Watson’s view of variations.

Man has destroyed more species than he has created varieties.

Variations are centrifugal because the chances are a million to one that identity of form once lost will return.

In the human race, we find no reversion "that would lead us to confound a man with his ancestors".

Wrote a "frightful screed" about aristocracy’s being a necessary consequence of natural selection, and then burnt it.

H. W. Bates is the only man "thinking out" natural selection to any purpose. "I think I have driven Bates back to Nat. Sel. as the only way of solving his difficulties."

HWB’s mimetic butterflies.

JDH wishes he had time to do the same thing with plants.

Owen and Huxley involved in a "contemptible" squabble in the Edinburgh newspapers.

Maximovitch reports Stellaria bulbifera is a Siberian form which never ripens its seeds.

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].

JDH explains why he cannot take Scott on at Kew.

John Tyndall cannot answer CD’s questions on glaciers. Edward Frankland’s ignorance. In JDH’s opinion, heaviness of winter snowfall is the greatest element in size of glaciers and this is a function of low mean temperature. Discusses descent of glaciers.

Sabine’s address, printed in the Reader [4 (1864): 708–9], is good on the whole. Sends Huxley’s account of the row.

Praises John Ruskin’s eloquent reply to Jukes.

Will not be inclined to challenge Pangenesis.

Admits CD’s victory over JDH’s continental hypothesis (but will not give up Greenland).

Relation of variation to circumstances is shown by discovery of endemic St Helena umbellifer having same palm-like habit as an endemic Madeiran species.

Has completed Boott’s Carices [Illustrations of the genus Carex, pt 4 (1867)],

is printing W. H. Harvey’s work [Genera of South African plants, 2d ed. (1868)],

and is revising English edition of Alphonse de Candolle’s Laws of botanical nomenclature [trans. H. A. Weddell (1868)].

Arrangements at Kew. Gardener [John Smith] is very ill; Oliver reigns supreme in the Herbarium.

Oliver overlooked CD’s request about rutaceous flowers. Of precisely which points about the ovules does CD want illustrations?

Could not believe Owen to be so demoniacal as to write the Athenæum review [of Variation].

Gardeners’ Chronicle review [see 5918] is weak. CD’s ideas on causes of variation may be as hazy as the reviewer’s.

Huxley’s clever remark on Pangenesis. JDH’s view of Pangenesis as fundamental to development doctrines, but nothing is gained by formulation in terms of germs or gemmules.

Tries to answer question on last page of CD’s letter anent sexuality.

Did not intend to imply that Hallett said variation stopped, but that it arrives at a point where further accumulation in direction sought is so slow as to result practically in fixity of type – but not absolute fixity.

Duke of Argyll has requested JDH to superintend publication of a flora of India. JDH thinks he [Argyll] is paying him off for his kick at natural theology.

Willy [Hooker] returning from New Zealand.

A unique character in Drosophyllum.

Sees no reason for CD to contribute to Ross and Faraday memorials.

CD’s observations on curved styles read well. JDH seeks morphological rationale of curvature in the position of nectaries.

He has avoided lecturing to Royal Family’s children at Buckingham Palace.

Glad to hear good news of Etty [Henrietta Darwin].

CD’s observations on Scaevola are capital. The indusium collects the pollen and is the homologue of the pollen-collecting hairs of Campanula. A boat-shaped organ forms a second indusium, the inside base of which forms the stigmatic surface. The latter later protrudes as horns, forming the stigma.

Describes W. H. Harvey’s scientific career and thinks his letter interesting. Agrees with Harvey that the primary agency of natural selection is as great a mystery as ever. [Response to 2823.]

JDH reports on the debate on the Origin at Oxford [BAAS] meeting.

Encourages CD’s work in vegetable physiology.

Ascending the Lebanon JDH noted limits of plant distribution as CD requested: lower limits of a genus sharper than upper. Sharpness of boundaries related to a plant’s moisture requirement.

Impressed by "sporadic" distribution at the Jardin des Plantes in Paris.

JDH’s page-by-page criticisms on Origin, first edition, as requested by CD for preparation of the third edition.

CD’s article worth publishing in Gardeners’ Chronicle. JDH interprets CD’s observation in terms of selection. Has observed similar phenomenon in Cruciferae, where it can be taxonomically important.

List of Australian plants that have become naturalised in the Nilgiris [India] and are turning out the native trees.

Sends plant specimens. William Borrer will be glad to send seeds.