RECORD: Darwin, C. R. & Horace Darwin. 1873.09.25. Cabbage. CUL-DAR66.23. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. 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-DAR66 contains notes on 'bloom'. Francis Darwin explained: "His researches into the meaning of the 'bloom,' or waxy coating found on many leaves, was one of those inquiries which remained unfinished at the time of his death. He amassed a quantity of notes on the subject". LL3: 339. See an Introduction to these folders by Christine Chua & John van Wyhe.
[23]
Down Sep 25th 1873
Cabbage
Small piece of cabbage leaf dipped into water at
100° was thoroughly wetted in a few seconds both top & bottom
95° waved about for 40" in water abt. 1/2 upper surface about 1/2 was wetted to under surface very little wetted
91° waved for 30 minutes sec upper surface nearly wetted all over under also nearly all over
85° waved about 1m 45 sec upper slightly, under less wetted.
75° waved for 3 minutes upper surface with a few drops sticking under quite dry
64° waved for 3m both surfaces quite dry
Horace D.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 26 June, 2023