RECORD: Darwin, C. R. n.d. Abstract of Sedgwick, Geological Transactions. CUL-DAR39.171. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2022. 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.
Adam Sedgwick, 1835. Remarks on the structure of large mineral masses, and especially on the chemical changes produced in the aggregation of stratified rocks during different periods after their deposition. Transactions of the Geological Society 3 ser. 2: [461]-486.
[171]
Geolog. Trans. vol 3 p. 471
"That this arrangement is crystalline, it is impossible to doubt, when we examine "the planes of cleavage & see them coated over with chlorite & semi-crystalline matter, which not merely define the planes in question, but strike in parallel flakes throughout that whole mass of the rock."
(Must insert this)
[South America, p. 163: "With reference to the slates of North Wales, Professor Sedgwick describes the planes of cleavage, as "coated over with chlorite and semi-crystalline matter, which not only merely define the planes in question, but strike in parallel flakes through the whole mass of the rock."†
† Geological Trans. vol. iii. p. 471."]
[171v]
Hodgkin
Waterton, Paranha
Water
Blackwood
Dr. Fitton
London Library 200
Daniell
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022