The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. & Francis Darwin. [ny].02.18. Vegetable Marrow. CUL-DAR209.4.271. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 9.2022. 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-DAR209.4 contains for Darwin's book Movement in plants (1880).

[271]

Vegetable Marrow

Seedling having cotyledons 85mm long & one fully developed true leaf. In Hothouse with Kinograph

Feb 18 sank from 11Am to 3pm, then rose (~~especially rapid between~~ rapidly to 78. 9pm o'clock, then rose very gradually to 3 AM Feb 19, after which it sank gradually (with ( one slight rise about 1 pm 30) till 4. 30pm when it rose till 1 AM Feb 20 when it sank very gradually till 9.30Am when observations stopped.

The movements on Feb 19 & 20 much smaller than on 18th.

x/85 = y

42.5/85 = x

Oldish seedling — several on [illeg] Down— probably young Cots move in same way.

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