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From James Croll   4 February 1869

Summary

Argues for great age of earth before the Cambrian period. Opposes measuring age from secular cooling. Opposes Sir William Thomson. Lyell’s error on secular cooling.

Thanks for Moseley citation ["On the mechanical possibility of the descent of glaciers", Proc. R. Soc. Lond. 17 (1869): 202–8].

In Edinburgh he feels out of touch with latest developments.

Author:  James Croll
Addressee:  Charles Robert Darwin
Date:  4 Feb 1869
Classmark:  DAR 161: 263
Letter no:  DCP-LETT-6599