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Darwin, C. R. in correspondent 
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From:
Joseph Beete Jukes
To:
Charles Robert Darwin
Date:
25 May 1862
Source of text:
DAR 168: 90
Summary:

JBJ explains his theory of atmospheric denudation of Irish river valleys, to be published [as "On the river valleys in the south of Ireland", Q. J. Geol. Soc. Lond. 18 (1862): 378–403], and suggests its application to the Weald. This slow process would make the Weald far older than CD’s 300 million years.

Thanks for Orchids.

Contributor:
Darwin Correspondence Project