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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Discusses wear and tear due to glaciation and significance of this evidence for dating the glacial period. Mentions views of James Croll and Archibald Geikie on the issue.
Discusses views of Wallace, H. N. Moseley, and Croll on the mechanics of glacier movement.
Comments on Wallace’s new book [The Malay Archipelago (1869)].
Asks for a photograph of CL to be used by a society [in Serbia].
Comments on article by Wallace ["Sir Charles Lyell on geological climates and the Origin", Q. Rev. 126 (1869): 359–94].
Has finished new edition of Origin [5th (1869)]
and is back at work on sexual selection [Descent].
Recalls Cuvier’s reaction to Principles of geology.
Comments on Wallace’s article in the Quarterly Review [see 6684].
Not opposed to ARW’s idea that Supreme Will might direct variation.
Quotes passage in letter from ARW arguing for causes other than selection in determining human abilities.
Discusses excavation of lakes by glaciers.
J. P. Lesley does not believe ice-sheets involved in eroding Appalachians.
Cites article by David Forbes dealing with the geology of the S. American Cordillera ["Geology of Bolivia and South Peru", Q. J. Geol. Soc. Lond. 17 (1861): 7–62].
Discusses the flexures of the Cordillera, the age of the mountains, and basaltic dikes in granite areas.
Has just arrived in London, and would like to visit the following morning at breakfast time.
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.
Takes "much to heart" solar evidence for short age of the earth. Cites evidence for "long endurance of our existing continents". Comments on process of denudation.