The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [ny.02.20-22]. Citrus aurantium. CUL-DAR209.4.130. 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 materials for Darwin's book Movement in plants (1880).

[130]

(see old copy for dates & other particulars)

Citrus aurantium Fig 13A

circumnutation of Plumule

(reduced to 1/2 Scale Dots of same size except first one.)

[Movement in plants, p. 28: "Citrus aurantium: circumnutation of epicotyl with a filament fixed transversely near its apex, traced on a horizontal glass, from 12.13 P.M. on Feb. 20th to 8.55 A.M. on 22nd. The movement of the bead of the filament was at first magnified 21 times, or 10 1/2, in figure here given, and afterwards 36 times, or 18 as here given; seedling illuminated from above."]

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