RECORD: Darwin, C. R. & Francis Darwin. 1878.01.22-.01.24 Corylus avellana. CUL-DAR209.4.132-133. 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).

[132]

(1) [Data]

Hazel in hot house plant 17mm high to base of leaves. Darkened all round. Magnified about 40 or 50 times

Filament fixed transversely across stemclose to leaves

Light

17.mm = .67

[133]

(2)

Mark moved so relative position compared with yesterday cannot be trusted. [Data] light

Jan 23.78

Hazel The light supposed to come vertical from above but the shade of black paper on the side of light did not fit well. Everything in same position as day before ─ except that the paper mark was brought up nearer the filament because the plant has grown

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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 26 September, 2022