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Darwin, C. R. in correspondent 
Busk, George in correspondent 
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From:
George Busk
To:
Charles Robert Darwin
Date:
10 Mar 1871
Source of text:
DAR 87: 21–7
Summary:

Clarification of the supra-condyloid foramen in humans and animals.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
George Busk
Date:
12 Mar [1871]
Source of text:
American Philosophical Society (Mss.B.D25.387)
Summary:

Discusses his blunder in "confounding the two foramina" [in the skull] of apes [in Descent].

Discusses views of George Rolleston, St George Mivart, and Huxley on the occurrence of the foramina.

Contributor:
Darwin Correspondence Project
From:
George Busk
To:
Charles Robert Darwin
Date:
16 Mar 1871
Source of text:
DAR 87: 29–30
Summary:

The presence of the inter-condyloid perforation in man no more indicates his simian relations than it does his relations to numerous other animals.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
George Busk
Date:
2 Sept [1871]
Source of text:
DAR 96: 88
Summary:

Is preparing a new edition of Origin [6th ed. (1872)] and asks GB for information on the gradations between the vibracula and avicularia of the Polyzoa and on what he bases his opinion concerning the homology of the avicularium with the zooid.

Contributor:
Darwin Correspondence Project
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From:
George Busk
To:
Charles Robert Darwin
Date:
10 Sept 1871
Source of text:
DAR 160: 383
Summary:

Replies to CD’s queries about the homologies of the avicularian and vibracular organs of Polyzoa and gives examples of gradations between the two.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
George Busk
Date:
13 Sept [1871]
Source of text:
Smithsonian Libraries and Archives (Dibner Library of the History of Science and Technology MSS 405 A. Gift of the Burndy Library)
Summary:

CD plans to use notes provided by GB. [See Origin, 6th ed., p. 193.]

Contributor:
Darwin Correspondence Project
From:
George Busk
To:
Charles Robert Darwin
Date:
16 Oct 1871
Source of text:
DAR 160: 384
Summary:

Returns CD’s MS [for Origin 6th ed.] on the defensive organs of the Polyzoa, with his comments.

Contributor:
Darwin Correspondence Project
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From:
George Busk
To:
Charles Robert Darwin
Date:
24 Nov 1871
Source of text:
DAR 160: 385
Summary:

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.

Contributor:
Darwin Correspondence Project
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