RECORD: Darwin, C. R. 1855. Abstract of Johnston, The physical atlas, etc. CUL-DAR205.2.162. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2022. 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. The volume CUL-DAR205.2 contains notes on means of distribution.
Darwin records reading this work in his 'Books Read / Books to be Read' notebook. Text CUL-DAR128.-
Johnston, Alexander Keith. 1852. The physical atlas, a series of maps & and notes illustrating the geographical distribution of natural phenomena. 2d ed. London: William Blackwood & Sons.
Darwin cited the 2d ed. in Natural selection, p. 539.
The pencilled number '18' indicates that this document was filed by Darwin in his portfolio for the subject of Migration.
[162]
(18)
In Johnson's Physical Atlas Rennels current (28 miles in 24 hours) goes from Astorias right to West Coast of Ireland.
Main equatorial current 60 miles per day.
Drift currents about 10 per day.
Cape Stream 80 [do]
Gulf Stream 35 [do]
From looking at these streams no one cd tell that W. Indian Plants wd arrive at Ireland & Scandinavia. Seeds cd arrive at Madeira & Azores by Rennels current & then sweeping to South.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 9 October, 2023