RECORD: Darwin, C. R. [1874-1875]. Draft of Insectivorous plants, pp. 293-4. SA-Haandskrift394A[.1]. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Scanned by Jakob Bek-Thomsen, transcribed by Darwin in Denmark, edited by John van Wyhe. Corrections by Christine Chua 11.2022. RN2
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with the permission of the Statsbiblioteket, Aarhus, Denmark and William Huxley Darwin. With thanks to Peter Kjærgaard, Jakob Bek-Thomsen, Michael Jørgensen and other members of the Darwin in Denmark team.
The verso of this fragment of the draft of Insectivorous plants (pp. 293-4) was later used by Darwin's son George for mathematical excercises. George Darwin later presented the sheet to Dr Victor Albeck in 1903. Since 1927 it has been preserved in the State and University Library, Aarhus, Denmark. See the letter from George Darwin in SA-Haandskrift394A[.2].
Compare with the similar manuscript fragment given to Christ's College in 1909 and displayed in the centenary exhibition there, and still at Christ's College. First published in Darwin Online as: CC-OldLibraryGG.1.25. See other notes and papers on Darwin's book on insectivorous plants here.
[1]
The excitement from the stimulus of thus caused by [text excised] the solution of sugar produces a acts for a much considerably longer effect time on the sensitive filaments than a mere touch. as might for have been anticipated . Of the thin leaves which had been immersed for a short time in the solution and & then washed by a syringe inserted between the lobes, one opened reexpanded after two days; a second after seven days; and the third not until nine days had elapsed. Whereas after a simple touch a leaf reexpands, as we shall hereafter see, within about a single day twenty-four hours. The leaf on which a drop of the solution
[in margin by George Darwin:] From the M.S. of "Insectivorous Plants"
[1v]
[mathematical notes by George Darwin, not transcribed]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 November, 2023