The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1877.12.13. Canary grass. CUL-DAR209.4.328. 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).

[328]

Canary grass. (Nutation of young Seedling)

Dec. 13' /77 /

Seedling just peeping from ground, about 1/70' above surface, cleared earth a little way round it, & traced (without any filament) movement of tip with black dot below, much magnified on horizontal glass, protected from all lateral light, from 11° 37 to 9° 30'—ie 10 Hours. ─See diagram— clearly nutated, but moved chiefly to one side no relation to light— probably from earth being disturbed round it, as was necessary — changed course greatly 6 times in this interval.

(Used)

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