The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. & Francis Darwin. [1877].10.11 Marsilea / Proof sheet of Forms of flowers, p. 63, published p. 123. CUL-DAR209.14.45-46. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2023. 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-DAR209.14 contains material for Darwin's book Movement in plants (1880).

[45 & 46]

Oct 11 in HotHouse

[data not transcribed]

Marsilea

Oct 11 Sunny day

Marsilea placed in position in the hot case the day before, & on the 11th only very slight twist of pot & the stalk of leaf made more vertical stalk of leaf tied (close to leaf) to lead wire. Index is a fine spun bit of glass; the observations made by foreshortening with no ~~second~~ paper mark —

~~Plant in~~ The index points away from light Temperature 28° in AM 22°C in Pm.

The vertical displacement of tip of leaf magnified at least 16 times. Length of leaf 15mm

[Between] 9° 30' & 3.30 3 ellipses vertical ie in 6°

[46]

[Proof sheet of Forms of flowers, p. 63, published p. 123.]

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