Sends weights of three objects (blotting paper, thread, and hair) to within 1/1000 of a grain.
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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.
Sends weights of three objects (blotting paper, thread, and hair) to within 1/1000 of a grain.
Sends results of chemical tests on specimens [of salt, see South America, pp. 73–5].
Encloses abstract from Justus Liebig on composition of bones and their ability to withstand decay.
Encloses analysis of salt from Patagonia. Cannot account for its inferiority.
Discusses chemical reaction involving common salt and carbonate of lime.