Sends his book [On protoplasm (1874)], which defends CD’s theory.
Suggests why the lips are closed and the teeth clenched in the expression of determination: it originated as a means of protecting jaw-bone and teeth against a strong blow.
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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 his book [On protoplasm (1874)], which defends CD’s theory.
Suggests why the lips are closed and the teeth clenched in the expression of determination: it originated as a means of protecting jaw-bone and teeth against a strong blow.