RECORD: Darwin, C. R. n.d. Nachwirkung. CUL-DAR209.8.144. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe. 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 volumes CUL-DAR209.7-8 contain notes on heliotropism (phototropism) for Darwin's book Movement in plants (1880).

144

Nachwirkung

Sept 28th

At 3. 59'; ie After 14' had advanced through nachwirkung to light— After 8' had gone back only a little & obliquely; after additional 6' a little further back, zig-zag. — Therefore I believe at 3º 59' had only just begun or not yet begun to go back & if so nachwirkung lasted for 14' not 4 18' ; but we must remember that seedling exposed for only 1º 27' to cloudy sky before light shut off.— By 5º 6' (ie after 1º 7') had gone back through apogeotropism to where had started at 2º 20'.—

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

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