RECORD: Darwin, C. R. n.d. Abstract of Gray and Pfeffer. CUL-DAR68.30. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. RN2

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.

[30]

8vo. Pamphlet — (Bloom)

(990) Asa Gray on Eryngium with phyllodinous leaves lives in dry situations

(read the paper)

Dr Pfeffers work Die Period. Bewegungen der Blattorgane 1875 very important

Gray, Asa. 1874. Eryngium, species with parallel-veined leaves. American Journal of Science and Arts 3d ser. 7: 443-444. (whole issue) [Darwin Pamphlet Collection 990] On front pp. 443-444 Darwin wrote: 'Those who believe like A. Gray & Herschel & Lyell that variation led by design, in fact make n. selection a superfluity —Each drop of rain is formed & falls by law, but does each single drop fall on each spot by design? —I do not believe it. — so I do not believe each form of life, as many almost as drops of rain, yet farmers act on lesser differences'. PDF

Pfeffer, Wilhelm. 1875. Periodischen Bewegungen der Blattorgane. Leipzig: Wilhelm Engelmann. [CUL-DAR240] PDF

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

File last updated 25 August, 2025