RECORD: Darwin, C. R. 1878.06.10-13. Erytherina corallodendron. CUL-DAR209.2.30. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2023. 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-DAR209.2 contains materials on circumnutation of leaves and stems for Darwin's book Movement in plants (1880).
[30]
June 10 to morning of 13th. 1878
Erythrina corollodendron.
circumnutation of Leaflet,
Old plant cut down, now 18 inches high— Terminal leaflet observed, secured to stick just behind joint. Leaf without joint [sketch]
2 1/2 inches long. —Traced on vertical glass under skylight
Temp. 15 1/2 to 16 1/2 C. — Tip of leaf 4 1/2 inches from glass—
Plant did not go to sleep well, either too cold or not light enough.— Day 11th after rising till 8° 15' oscillated. ie circumnutated greatly up & down till 4° P.m, but did not rise so high as on previous or succeeding day, & then great downward movement commenced — ascending & descending lines very near & parallel.— Next day 12th movement extremely simple up & down.— Mem. when leaflet depressed much tracing greatly exaggerated.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 24 July, 2023