RECORD: Darwin, C. R. n.d. Abstract of Élie de Beaumont, Leçons de géologie pratique. CUL-DAR72.62-63. 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: Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR 72-75 contain Darwin's abstracts of scientific books and journals.
[62]
Elie de Beaumont Leçons de Géolog Pratique 1845.
p. 137 — dust (I think Proctor has taken facts from him??) — Read Geikie's article of Denudation with criticism Geikies on E. de B.—
I think I had better not say anything disrespectful of him???
My facts prove that most earth-castings are washed down slopes, even slight ones — Hence we must conclude fresh earth is generated — The sole question how much — Then give E. de B. facts in opposition — no one supposes that an earthen rampart or tumulus disappears.— The sole question how much is washed down, E de B. does not appear to have made sections—
Furrowed Fields — my measurement & doubts — In my own field mark of old Hedge & hollows— Down on chalk greatest difficulty
[62v]
I do not doubt all these discussions instigated by my paper —
[63]
p. 140 "la couche &c quote — then add if this means that the same particles of earth remain in same place an error— but that there is a continually though slowly renewed layer is true.
149-152 angles of old [illeg]
—142 on earth in old cities— my view we know by rivers how much is carried away — begin with this & then escarpment.
145 148. quotes [illeg] stones — 149 to 152 old camps
160 Tumuli Tumuli in all parts of world
165 164 Old furrowed Fields
168 earth thrown out of ditches — long remain with old trees growing on such banks.
As new soil formed our sole mean of judging is whether slope angle at base of slope becomes less steeply inclined.
p 176 181 old trees — this does not tell anything I believe
p 182— — vegetable soil a zero
183 Transport of Dust — I suspect Proctor better
186 dust good
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022