RECORD: Darwin, C. R. n.d. The section of the Uspallata will be 70 miles. CUL-DAR39.99. 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.
[99]
The section of the Uspallata will be 70 miles ─ drawn as 40 inches ∴ a mile will equal 4/7 of inch ─ or .57
The pass of Andes being 12000 ft ─ or 9000 feet above mouth of Valley ─ the vertical height will only be .85 of an inch above the mouth assumed from Mr [Miers] drawing ─ But we will take 3 inches or [summit] each 3000 ft.
Edge of Pampas assumed 4000 ft Miers Chili 3000 ft
1000 ft = 4/12 of inch or .333
Every part from times width of Chart
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022