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From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
[1 Sept 1844]
Source of text:
American Philosophical Society (Mss.B.D25.39)
Summary:

Asks about CL’s new book [Travels in North America (1845)].

Discusses views of A. D. d’Orbigny on elevation.

Mentions reading W. H. Prescott [History of the conquest of Mexico (1843)].

Contributor:
Darwin Correspondence Project
From:
Sir John Herschel
To:
Sir Charles Lyell
Date:
[15 November 1844]
Source of text:
RS:HS 11.423 & 22.210
Summary:

Regarding L. F. Menabrea's papers, thinks he is a good mathematician. Is not so sure about Augusta A. King's (Lady L[ovelace]) notes.

Contributor:
John Herschel Project