RECORD: Darwin, C. R. 1878.05.20-07.17. Iris Blue-flowered (By Solomon's Seal). CUL-DAR67.52. 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-DAR67 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.
[52]
Iris Blue-flowered —
(By Solomon's Seal.)
May 20th 1878 sponged 4 leaves, both sides with tepid water (red wool.)
July 17' 1878
(1) Stalk with 7 leaves, the exterior sponged one more decayed than the corresponding opposite; very little difference in the parts attacked by insects
(2) 6 leaves the cleaned one much less decayed than opposite one — neither much gnawed
(3) 6 leaves — the cleaned one far more decayed & rather more gnawed than opposite one.
(4) 7 leaves cleaned one much more decayed, but not more gnawed than opposite one
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 14 June, 2023