Observations on a bird that used a stone to break open a snail.
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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.
Observations on a bird that used a stone to break open a snail.
On muscles in man for moving skin, hair, ears, etc.
On the development of the mammae and the glands of the skin. R. A. v. Kölliker and Carl von Langer are the authorities [See Descent 1: 209].
Extract from Robert Knox on hermaphroditism [Lond. Med. Gaz. 12 Jan 1844].
Note on errata in first volume of Descent.