RECORD: Darwin, C. R. [ny].07.18-31. Oxalis coppery corniculatus. CUL-DAR68.118. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. 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-DAR68 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.
[118]
Oxalis coppery corniculatus
S Ether removes silver instantly — surface slightly repellent afterwards. Waving for 1' in water at 91° did not remove silver (or layer of air), but sponging for 1' with do water did do so, but surface still repellent, yet water does not roll off in globules.
Waving leaflet for 1' in water 100° to 99° removed silver, & then sponged with do water, but surface still repellent.
July 18th 11° 10' — 5 leaflets sponged whole upper surface for some time with water 92° to 90° & then pinned on cork: drops placed some time on one half of leaflet — sometimes on other half or on base &c. —
July 30 removed water — They went at night partially to sleep. I can see no effect produced,
31. Looked again, 3 of them a shade paler yellower brown. —
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 13 July, 2023