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Forbes, David in addressee 
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From:
Charles Robert Darwin
To:
David Forbes
Date:
31 July [1870]
Source of text:
American Philosophical Society (Mss.B.D25.381)
Summary:

Thanks DF for proofs of his paper on Aymara Indians.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
David Forbes
Date:
18 Nov [1871]
Source of text:
DAR 185: 111
Summary:

Inquires about the effect of turf covering on the rate of disintegration of rock.

Contributor:
Darwin Correspondence Project
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