Clarification of the supra-condyloid foramen in humans and animals.
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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.
Clarification of the supra-condyloid foramen in humans and animals.
The presence of the inter-condyloid perforation in man no more indicates his simian relations than it does his relations to numerous other animals.
Replies to CD’s queries about the homologies of the avicularian and vibracular organs of Polyzoa and gives examples of gradations between the two.
Returns CD’s MS [for Origin 6th ed.] on the defensive organs of the Polyzoa, with his comments.
Thanks for information on platycnemic tibiae found in America. Believes the condition is of two kinds as exemplified by Gibraltar and Cro-Magnon tibiae on one side and the Welsh form on the other. Would like to know which of the two forms the American bones are; their proportions suggest they are very like the Welsh tibiae.