The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [ny].08.27-09.03. Sumach Rhus cotinus / 2d trial / Tropaeolum minus & tuberosum. CUL-DAR68.153. 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.

[153]

2d trial/ Sumach Rhus cotinus

Aug. 27' 5° 30' Hung up dry cleaned both surfaces right side of all leaves with tepid sponge. If dry different. weigh

Sept 2d 5° P.m some of leaves I think a little drier on right-side

Sept 3d 8° A.m right sides of most of leaves decidedly feel rougher & rather drier than other— Put branch in tepid water 7° 57'

August 28 5° 30

Tropæolum minus & tuberosum

right-hand side both surfaces cleaned: hung to dry.

T. tuberosum. 30th 8° A m. much withered, right side more crumpled & darker-coloured & plainly drier. —

(T. minus. 31' A.m — right-side blotched with yellow & different appearance, perhaps drier. Sept 1 right side conspicuously yellower & in 2 of the leaves much more crumpled—

Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)