Thanks ADB for Limulus.
Does Callithrix sciureus wrinkle the skin around its eyes when it screams? Do the eyes become suffused with moisture?
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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 ADB for Limulus.
Does Callithrix sciureus wrinkle the skin around its eyes when it screams? Do the eyes become suffused with moisture?
Offers a polydactylous cat to the Zoological Gardens. [Offer declined and letter forwarded to CD.]
CD questions ADB on the mode of feeding of geese and on the existence of variations in the structure of the bill; is trying to trace gradations in structure and habits.
Geese do not commonly sift water through their bills for food, as they feed on land. A few have well-developed lamellae for sifting. Will have his son check at Zoological Garden.
Asks whether any goose sifts water with its beak.
Can ADB allow T. W. Wood to sketch one of his dogs in hostile and friendly positions?
Do elephants in the Zoological Gardens carry tails aloft when excited?
Reports aggressive reactions of three kinds of porcupines to a snake, concluding that in the wild they would probably kill and eat it [see Expression, pp. 93–4]