Action of earthworms and weather on surface soil of old earthworks and fortifications.
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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.
Action of earthworms and weather on surface soil of old earthworks and fortifications.
Varying depth of top-soil in a ridge-and-furrow field with a depression.
After reading Descent sends two instances of men and animals using the same muscles to express similar emotional states.
Gives his account of H. M. Butler’s apparently inherited habit.
Discussion of H. Spencer’s views on the origin of music.
Gives publication date for J. C. Lavater, L’Art de connaître les hommes, 1806–9, edited by J. L. Moreau. The first four volumes appeared in 1806.
Sends abstract, and will bring book on Saturday.