RECORD: Darwin, C. R. n.d. Notebook A: 115e-116e (excised pages). CUL-DAR40.5. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2021. Corrected 2.2026. RN3
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.
(35)
Lamellar dikes like Mica Slate Von Buch Canary Isd p 170 — Mem Cordillera
Can greenstone dikes be residue of quartzon vein in higher parts? or felspathic veins?
(43)
L' Institut (1838) p. 268 Paper by Humboldt on Bogota Cordillera, - nothing — salt & coal near Bogota: p 270 splendid paper on fossil shells of S. America. Von Buch
so why not metals
The theory of veins will I suspect be greatly aided by considering space formed — great vacuum — by dike — Mem. however ruins of [illeg] in Salisbury trip
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 1 February, 2026