RECORD: Darwin, C. R. 1878.07.04-05. Trifolium subterraneum. CUL-DAR209.10.81. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2022. 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-DAR209.10 contains notes on sleep (Leguminosae) for Darwin's book Movement in plants (1880).
[81]
(One Trifolium subterranean: circumnutation & sleep-movement of terminal leaflet (.68 of inch in length with its sub-petiole) during 24 hours traced from; filament fixed to midrib ; apex of leaflet only 3 7/8 of inch from the vertical glass, on which tracing made. The & movement as here represented shown (& reduce to 1/2 scale) magnified 5 1/4 times; nocturnal course greatly curtailed represented by dotted curved arrow. Plant illuminated from above. Temp. 16°-17°C.)
26 1/2 hr
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022