RECORD: Darwin, C. R. 1881.10.29. Pelargonium zonale. CUL-DAR52.F4. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 10.2022. 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.
[F4]
Oct 29 1881
Pelargonium zonale
Slight pressure from loaded pin pressing on glass plant on leaf from Oct 12. 2˚ 30 P.m to Oct 19' 8˚ 30' a.m does not cause any change of colour, or aggregation or disintegration of Chlorophyll grains.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 26 October, 2022