Tabulation of varieties goes on; very important as it shows the branching of forms. Mentions his principle of divergence.

Some negative results in variety tabulation survey.

Galls on wild carrot.

C. F. Ledebour [Flora rossica (1842–53)] particularly useful for variety tabulation. Results generally favourable.

Additions to Down House.

Last two chapters of MS took six months to write.

Returns some of the systematics books borrowed from JDH. Will now take on A. P. and Alphonse de Candolle [Prodromus].

Arrangements for a visit.

Return of books.

JDH coming to Down.

Rule that species vary most in larger genera seems universal.

Response to Gardeners’ Chronicle note on "Bees and kidney beans" [Collected papers 1: 275–7].

Mrs J. S. Henslow’s illness.

Inquiries on effect of dry heat on temperate plants for glacial chapter.

Survey of species with well-marked varieties: JDH’s Labiatae case a "great blow", but result is very generally consistent.

Species with marked varieties.

Dana’s pamphlet also too metaphysical for CD.

Natural selection chapter on hybridism completed.

Doubts JDH will resist theory in his introduction to Flora Tasmaniae.

Request for Floras of Pacific Islands and Greenland.

Individual variation.