The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [1873?].06.13. Opium powder and sawdust. CUL-DAR55.143. 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).

[143]

June 13' Opium Powder & Sawdust

Opium at 8˚ 9' & sawdust last put on

8˚ 25 the coarse grain of opium has caused plain inflection in one leaf!! & when washed no difference in amount on the 2 sides —

Neither side has acted on 2d leaf

14' 7˚ 30 opium has acted [illeg] more than sawdust—

8˚ 42 2d lot in glass vessel

2˚ In all 3 specimens the opium has certainly caused more inflection than the sawdust — In the 1' specs. They seemed to act equally. Oh oh. oh.

[143v]

[Proof sheet of Expression, published, p. 345.]

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