RECORD: Darwin, C. R. [1836-1837]. [excised pages] Red notebook, pp. 43e-44e. CUL-DAR40.7. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe 6.2025. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.

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There is long discussion on Pumice [& Obsidian:] in the I Vol. Humb:

There is rather good abstract of Humboldt. S. American Geolog. in Daubeny. P. 349

Admirable little table showing long periods of great violence volcanic. from Humboldt: Comparison P 361. Daubeny

7v

Von Buch is very strong about Trachyte being the most inferior rocks — The stream at Portillo Pass example of do? <[Poor?]>

Daubeny good account of ejected granitic fragments. P. 386

[Mem. Lyell's fact about sulphuric vapours in East Indian Volcanos]

Gypsum

Andes

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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 23 June, 2025