The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. & Francis Darwin. [1881].09.19-09.20. Mimosa and Pistia stratiotes. CUL-DAR209.2.154. 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).

Pistia Stratiotes had a fine glass fibre gummed on so as be able to read the angle either by Abney Level or Protractor & plumbet

[sketch] Angles not read very exactly

Mimosa ‒ fine glass fibres tipped with sealing wax gummed to 2 middle secondary petioles (just projecting beyond leaves). Main petiole fixed onto a bit of cork; protractor lies horizontally under the leaf with its centre under the junction of the 2ndy petioles

[sketch] cork birds eye view protractor

Stratiotes Sep 19 Mimosa Sep 19

[data not transcribed]

[2v]

I think that Desmodium with the pen attached & no leaf goes up much earlier than the others

Stratiotes Mim

[data not transcribed]

Strat Sep 20 S 20th Mimosa

[data not transcribed]

Mimosa Sp 20

[data not transcribed]

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