Summary

Sending more Candolle volumes for survey of species with well-marked varieties.

Has begun his introduction [to Flora Tasmaniae]; will not make generalisations.

J. D. Dana’s pamphlet too metaphysical for JDH.

Summary

News of Mrs Henslow’s death.

Studying Impatiens, which bears on CD’s problems. Though genus is endemic to India, with over 100 species, CD will be glad to know they do not run into one another.

Summary

Finds CD’s results [of his survey of well-marked varieties from A. P. and Alphonse de Candolle’s Prodromus systematis naturalis regni vegetabilis (1824–73)] "very curious and suggestive". Thinks the Labiatae will present an obstacle to him as it is a very large and distinct order with well-defined species and genera. Would like to see him tackle more volumes of Candolle’s Prodromus, as his case can only be established by evidence from mundane plants. CD should beware of generalising from local species variability. A comparison of C. C. Babington’s and G. Bentham’s [British] Floras [Babington Manual of British botany (1843, 4th ed., 1856); Bentham Handbook of British flora (1858)] would be invaluable. Suggests CD write to Ferdinand Müller and Charles Moore in Australia. Moisture favouring extension of species is important for CD’s view.

Summary

JDH cites W. H. Harvey’s observations on Fucus and David Don’s on Juncus as examples of variations that are independent of climate. There are many such cases. Gives his working scheme for categorising variation.

Summary

Embryology of plants of low systematic order. Comparative development begins only with first post-cotyledonary leaves.

Curt letter to JDH from George Henslow.

Summary

Reports that N. J. Andersson finds every European willow bar one is also American.

Has heard from David Livingstone and reports on his progress.

Summary

Oliver says H. E. Baillon found stamens on female flowers of Coelebogyne, but JDH and many botanists have never found any stamens.

Lyell wants to propose JDH for Copley Medal.

Summary

Is attempting to sum up the two theories impartially and must raise all the difficulties with each. More on his differences with CD.

Summary

Sends, for signature, a statement approving change in rules of the Leopoldino Academy [Dresden] to be forwarded to CD to sign.

Summary

Has gone over to CD’s side on the fertilisation of clover in New Zealand by bees.

Summary

No one believes in Karsten.

Surprised by CD’s observations that illegitimate crosses within a species produce hybrid-like offspring.

JDH’s scepticism of Scott’s observations.

On proposing James Hector vs Julius von Haast for Royal Society; on learned society honours.

Summary

Lighthearted thoughts on "the development of an Aristocracy" after a visit to Walcot Hall, Shropshire.

On CD’s point about the effect of changed conditions on the reproductive organs, JDH does not see why this is not "itself a variation, not necessarily induced by domestication, but accompanying some variety artificially selected".

Summary

Huxley’s lectures [Man’s place in nature (1863)]; he would be a scientific H. T. Buckle, if he were more careful.

Asks CD what the evidence is for inheritance of acquired characteristics.

Summary

Working on "Insular floras" lecture for BAAS Nottingham meeting [see 5135].

Puzzled at distribution of Madeiran and Canaries plants and insects.

Supports Forbes’s Atlantis hypothesis [see 956], which he has reread and to which he will allude.

Wollaston disappointing on Madeiran insects.

Summary

JDH criticises C. J. F. Bunbury’s paper on Madeira [J. Linn. Soc. Lond. (Bot.) 1 (1857): 1–35].

Absence of Ophrys on Madeira suggests to JDH a sequence in creation of groups.

Why are flightless insects common in desert?

Australian endemism.

Summary

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

Summary

R. I. Murchison’s address [see 4595] smashes Ramsay’s glacial theory.

JDH defends his view that CD should not answer Kölliker.

Summary

His mother very ill.

Mrs Hooker back from Bavaria.

Hopes marriage [of Henrietta] went well. Is accused of saying he would rather go to two burials than one marriage.

Has heard from Huxley who is threatening to "thin out" Mivart. Huxley is reading Francisco Suarez and finds Mivart misquotes or misunderstands him.

Summary

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.

Summary

Hookers and Lyells will visit Lubbocks so he cannot see CD in London.

Will CD sit for Woolner?