The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1877.05.04. Mimosa. CUL-DAR209.2.93. 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).

[93]

Mimosa

arrange for drops of water to fall on leaves for 2 or 3 Hours & see if will open.— will they open under water? I shd think wd open in our country during windy day— Try on hot & windy day — or try shaking every 2 or 3'— If open under dripping water my view exploded.—

(The ~~greater &~~ warmer water wd make them more sensitive to the impact of drops; & this sensitiveness has been utilised.—

They can resist ordinary heated air to high degree without ~~moving~~ moving — but sudden changes in Heat causes movement.)

May 4th /77.

Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)