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DCP-LETT-977

From:
Charles Robert Darwin
To:
Leonard Horner
Date:
[23 Dec 1846 – Jan 1847]
Source of text:
DAR 145: 138
Summary:

Responds to LH’s comments on South America.

Thinks it unsound to designate a geological epoch after man. Doubts people’s confidence in date of man’s introduction.

Criticises A. D. d’Orbigny’s theory of elevation of the Cordillera.

Lists sections of South America of special interest.

Contributor:
Darwin Correspondence Project

DCP-LETT-993

From:
Charles Robert Darwin
To:
Leonard Horner
Date:
[17 Aug – 7 Sept 1846]
Source of text:
American Philosophical Society (Mss.B.D25.53); DAR 145: 136–7 (enclosure)
Summary:

Discusses proposed survey of Glen Roy. Mentions Glen Roy theories of Agassiz and William Buckland. Includes a memorandum calling for a careful survey of the parallel roads of Glen Roy. Mentions M. A. Bravais ["On the lines of ancient level of the sea in Finmark", Q. J. Geol. Soc. Lond. 1 (1845): 534].

Contributor:
Darwin Correspondence Project

Herschel10614

From:
Leonard Horner
To:
Sir John Herschel
Date:
[2 November 1846]
Source of text:
RS:HS 9.493
Summary:

When on board the Excellent at Portsmouth he was deafened by the firing of a gun and has since suffered from 'singing' in his ear. Can JH recommend a relief? His daughter would like an engraving of JH.

Contributor:
John Herschel Project
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