RECORD: Darwin, C. R. & Francis Darwin. [ny].06.25. (1) Dipped half a Drosera leaf. CUL-DAR60.1.90. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. 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).
[90]
June 25th
(1) Dipped half a Drosera leaf [sketch] into a solution of sugar gr ii to [symbol] i for 6m then other half with in soln of acetate of morphia gr ii to [symbol] i for 6m— Then whole leaf was dusted over with fine white sand—
(2) Another leaf similarly treated
(1) (a) showed no trustable results
(2) in a quarter of an hr showed a good deal more inflection on the upper side, but some in the morphia—
S of Quin about 1 to 1000 of
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 12 February, 2023