Plants arrived.

Delightful dinner at Lyell’s.

Will be interested in seeds passed through a fowl.

Wedgwood medallions were bought by a Miss W. [Sophy Wedgwood] of Leith Hill.

Lubbock’s account of a new centipede at Linnean Society gave rise to lively discussion by Busk and Huxley.

Scarlet seed is Adenanthera pavonina. JDH’s suggestion on how disseminated.

On Herbert Spencer, "all oil no bone – a thinking pump", but his paper on sap and wood [Trans. Linn. Soc. Lond. 25 (1866): 405–30] is good science. His refusal to bring a specimen for analysis when confronted by JDH.

Bentham and Martin disagreement.

Speculations on New Zealand flora.

Albert Günther’s paper on fishes on each side of Isthmus of Panama [Proc. Zool. Soc. Lond. (1866): 600–4].

On the quantity (bulk and weight) of organic life [matter].

Has finished Variation. May insert a chapter on man.

Still puzzled by seeds of Adenanthera.

New Zealand and Borneo flora problems continued.

Fritz Müller found six genera of dimorphic plants in one day.

Analysis of New Zealand flora; proportion of indigenous annuals.

Uniform climates are poor in species.

Evergreen and deciduous vegetation: relationship to flora and fauna.

B. J. Sulivan offers fossil leaves from Eocene beds at Bournemouth to CD or JDH. Does JDH want them, or should they go to Oswald Heer?

Has written to Athenæum [see 5308] about publishers cutting pages of their books.

Suggests fossil leaves go to Heer.

Agrees with CD on cut pages in books.

Lyell wants to see JDH’s last letter [the part on glacial periods]. Lyell full of concern about astronomical causes of heat and cold on the globe.

Encloses letter from John Scott.

Mrs Hooker will not come with him to Down on Saturday.