RECORD: Darwin, C. R. & Francis Darwin. n.d. Helianthus annuus. CUL-DAR209.4.170. 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).

[170]

Helianthus annuus

Oct 26 Hothouse

One cotyledon pinned to a cork a glass filament gummed to the other & observed by foreshortening on a vertical glass. Plant darkened by a cylinder of brown paper with a white paper top.

Note Next morning the gum was loose & wet.

[Figure pasted on]

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

File last updated 27 September, 2022