The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1874.05.02-04. Oil Experiments [on Drosera]. CUL-DAR57.15. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. 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 volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).

[15]

May 2d. 1874. 8° 20' Am.

Put on drops (whether any adhered I cannot say) of unboiled linseed oil — on 4 glands on 2 leaves & on 2 glands on 3d. leaf— making 10 glands on 3 leaves.—

2° 50' not the least action. —

May 3d 8°. 40' Olive Oil. Stick-matches. 2 leaves 9 glands — touched with olive oil, I am sure glands themselves not touched. (9°. 20' a long-headed had moved a trifle.

(I put on oil a second time on several gland.) ~~Next~~

4°. 20' not the least movement in the 9 tentacles

(May 4th 8° A.m. not effect

[15v]

Oil Experiments

I think better add under not-nitrogenous fluids

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