Questions on marmosets and the vocal organs of Hylobates.
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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.
Questions on marmosets and the vocal organs of Hylobates.
Has passed on copy of Variation to American Academy [of Arts and Sciences]. The U. S. reprint is not very nicely printed.
Replies to CD’s queries regarding sexual differences in gibbons’ voices, chameleon behaviour, and the occurrence of spurs in pheasants and peahens. Discusses sexual differences in structure and habit within certain bird species.
Answers CD’s question on whether any female birds regularly sing.
Sends graft-hybrid notice.
Is confirmed about the bending of the fly orchid pollinia. [See "Fertilisation of orchids", Collected papers 2: 141.]
CD cannot remember whether correspondent believed the wing that Gallus bankiva opens and scrapes before the female, is ornamented. He fears it is not.