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From Charles Lyell   2 November 1869

Summary

Comments on Huxley’s address ["Geological reform", Q. J. Geol. Soc. Lond. 25 (1869): xxxviii–liii].

Physicists have ignored variation in sea-level in calculating effects.

Doubts if sun only source of heat.

Notes average depth of sea is 15 times height of land.

Criticises CD’s concept of permanent continents.

Sedimentary strata of Alleghenies must have derived from continent located where Atlantic is. Thinks enormous amount of denudation, submergence, and elevation may have accompanied relatively insignificant organic changes.

Author:  Charles Lyell, 1st baronet
Addressee:  Charles Robert Darwin
Date:  2 Nov 1869
Classmark:  Edinburgh University Library, Centre for Research Collections (Gen.113.ff.3734–3737)
Letter no:  DCP-LETT-6967

From R. F. Cooke   2 November 1869

Summary

Thinks it best for Murray’s to engrave the "Monkeys", etc. for themselves.

Author:  Robert Francis Cooke; John Murray
Addressee:  Charles Robert Darwin
Date:  2 Nov 1869
Classmark:  DAR 171: 372
Letter no:  DCP-LETT-6968
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