Thanks WHM for information about honeycombs. Discusses his own measurements of combs.
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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.
Thanks WHM for information about honeycombs. Discusses his own measurements of combs.
Sale of Origin requires new edition [3d (Apr 1861)].
Further discussion of geological elevation and subsidence in Europe. Compares evidence to that of South America. His theory that semi-fluid matter underlies earth’s crust.
Mentions David Forbes’s explanation of South American nitrate deposits.
Has followed CL’s advice not to reply directly to reviewers.