RECORD: Darwin, C. R. [ny].03.11-25. Red Cabbage cotyledon. CUL-DAR68.61. 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.
[61]
Red Cabbage Cotyledon Salt-water
March 11th. 12° — put drops on 1 cotyledon of 5 6 seedlings, (marked with sticks) but salt-water drops ran down to centre of smaller seedlings.
March 13th. 2 or 3 of the Cots. badly injured & flabby.
March 14th 8° a.m examined carefully 4 killed outright & these are small seedlings so that salt water run on axi bud— 2 larger seedlings with only 1 Cot. killed & the other & central bud look healthy
March 14th 8° 15' put salt-water on one Cot. alone of 6 & 4 other fresh seedlings, of good size. —
March 14. 4° P.m 1 cot; dead (I suppose must have been punctured by some insects
March 16' 7° a m. one Cot. quite dead.
― 23 7° a.m one Cot. dead
25 7° ― do. do.
25 2 other seedlings with the Cot, which had salt-water not in the least injured; ie after 11 days — It seems that, though without bloom are moderately protected from salt-water.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 11 July, 2023