The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. & Francis Darwin. [ny].02.20-22. Orange. CUL-DAR209.4.303. 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).

[303]

Feb 20

Orange

Young plant measuring on the morning of Feb 22 15 mm .59 inch in height—Horizontal glass filament & paper mark; Horizontal glass supported over the place in Hothouse blackened by rugs, & little tin cylinder round plant magnifying power l varied owing to growth: On Feb 21 at 10.5 AM magnifying power was 21, it was then increased to 36

Feb 20

[timing of observations not transcribed]

Feb 21

[timing of observations not transcribed]

Feb 22

[timing of observations not transcribed]

[calculations not transcribed]

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