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Lyell, Charles in correspondent 
1860-1869::1866 in date 
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From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
1 Mar 1866
Source of text:
DAR 91: 89–90
Summary:

Feels sure that at times the globe must have been superficially cooler. Believes CD will turn out right with regard to migration across the equator via mountain chains, while the tropical heat of certain lowlands was retained.

Contributor:
Darwin Correspondence Project