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Humboldt, Alexander von in author 
1830-1839 in date 
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Herschel10707

From:
Alexander von Humboldt
To:
Sir John Herschel
Date:
[29 May 1838]
Source of text:
RS:HS 10.64
Summary:

Calling his attention to the works of J. C. Poggendorf and Guillaume Weber. Does he know of the ingenious work carried out at the Cape by C. F. Gauss and Weber?

Contributor:
John Herschel Project

DCP-LETT-534

From:
Friedrich Wilhelm Heinrich Alexander (Alexander) von Humboldt
To:
Charles Robert Darwin
Date:
18 Sept 1839
Source of text:
DAR 204: 180
Summary:

Praises CD’s Journal of researches and comments on some of CD’s observations and conclusions. Considers volcanic activity and its effect on past climate and changes in climate over time. Discusses glacial phenomena. Believes the climate of the coast of Peru is modified by cold sea-currents.

Contributor:
Darwin Correspondence Project
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