Summary

JDH has settled the Leschenaultia case, but it remains a difficulty to CD.

Goodenia, like bee orchid, seems a case of a structure with an evident function, which is not carried out. Is curvature of styles an incidental result of growth or a pollination adaptation?

Summary

CD intrigued by the pollination mechanism of Leschenaultia formosa.

CD interested in Thomas Bell’s rumour that Owen avows his review.

Curved styles and their relation to pollination.

Summary

Reread JDH’s letter "with infinite pleasure".

Plans to visit Kew.

Summary

Progress of [Thomas?] Thomson and G. H. K. Thwaites on accepting mutability.

Bee orchid pollination.

JDH has written to CD on homologies of stigma in Goodeniaceae.

Summary

Floral anatomy; pistil curvature and pistil movement. CD’s rule that bent pistils occur in "gangway" into nectaries.

The book JDH is planning, which he and CD discussed at Kew, should deal with plant reproduction.

Summary

Analysing results of last spring’s Primula experiments, CD infers pollen of short-styled plants "suits" long-styled plants.

Summary

Observations on Drosera: plants can distinguish minute quantities of nitrogenous substances.

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

J. S. Henslow’s defence of CD;

[Thomas?] Thomson’s opposition to Origin.

Summary

Lyell, de facto, first to stress importance of geological changes for geographical distribution.

Asa Gray has given CD too much credit for theories of geographical distribution.

Reaction to hostile criticism

and debt to Lyell, Huxley, JDH, and W. B. Carpenter.

Summary

Lyell and CD would urge JDH to make his essays into a book, but see he has embarked on a huge project with G. Bentham [Genera plantarum, 3 vols. (1862–83)].

Summary

Opinions on the Origin: AG thinks it masterly; Agassiz considers it very poor.

Summary

CD has a low opinion of British entomologists.

Lyell’s ingenious difficulties with natural selection show he is in earnest.

Asks JDH to observe beetles and variation of stripes in mules on his Syrian tour.

Summary

Asks JDH for some Goodenia.

Suggests Daniel Oliver try to cross Mimosa, noted for sterility.

Summary

Describes how adhesive bladders enable the achenia of Pumilio argyrolepsis to attach themselves to the soil. James Drummond sent seeds to CD with a memorandum on the achenia.

Summary

Dissection of Leschenaultia convinces CD insect agency necessary for self-fertilisation in this case.

Primroses and cowslips seem universally to occur in two forms. Very curious to see which plants set seed.

Summary

Thanks JDH for agreeing to observe coats of asses and mules in Middle East.

Asks for observations on vigour of plants as JDH ascends mountains.

Ad hominem article in Athenæum [review of John Tyndall, Glaciers of the Alps, 1 Sept 1860, pp. 280–2].

Reports extensive experiments on Drosera.

Observations on orchid anatomy.

Summary

To understand Leschenaultia pollination CD requires field observations in the native country.

Has observed two forms of cowslips, which he calls male and female. The same two forms are found in primroses.

Summary

Greatly praises AG’s discussion of Origin in Proc. Am. Acad. Arts & Sci. [4 (1860): 411–15; 424–6].

Mentions other reviews of Origin; believes the BAAS meeting at Oxford greatly advanced the subject. Has heard his views are gaining ground in Germany.

Summary

Has found some funny evidences of transmutation in Cliffortia. Sketches gradual passage "from very unlike to same" – e.g., from three-leafed form to two-leafed.