Has named 35 species of grasses.
Seed-salting continues.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Has named 35 species of grasses.
Seed-salting continues.
CD experiments: sowing seeds in fields; "breaking" seeds’ constitution with coloured light; plant hybridisation. Compiling works on hybridism.
Respect for W. B. Carpenter.
Note on "nectar secreting" to Gardeners’ Chronicle [Collected papers 1: 258–9].
Has read a paper, presumably by JDH, using the Madeiran flora to argue against Forbes’s doctrine.
JDH asked how far CD will go in attributing common descent; he intends to show "the facts & arguments for & against the common descent of species of same genus; & then show how far the same arguments tell for or against forms, more & more widely different".
Parcels sent to Down by coach may get lost.
Praise for JDH’s Flora Indica [J. D. Hooker and T. Thomson (1855)] from CD and C. J. F. Bunbury.
CD and J. S. Henslow dining in London. JDH invited.
Australian Leguminosae problem: of 900 species not ten are common to southwest and southeast. No migration; hence either creation or variation.
Himalayan thistles: graded intermediates between large and small English species, "shakes species to their foundations". Similarity of CD’s and his views on species.