RECORD: Darwin, C. R. [ny].04.17-20. Saxifraga sarmentosa. CUL-DAR209.3.302. 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 volume CUL-DAR209.3 contains materials for Darwin's book Movement in plants (1880).


[302]

Ap. 19th

Saxifraga sarmentosa

Runner on Sand—

9° 30' ─ 10° 30' smoked glass in front of 2 runners. (One of them with only short mark & this point seem to have left it.)

(10° 25'  sand-paper & shell-lac to end of 2 side branches 20th 9° a.m no effect)

As far as I can make out runner not sensitive to considerable rubbing

(A piece of smoked glass (broken slide) put in front of thin lateral long branch from runner. The curved point gradually crawled up it, brushing away the soot with extreme irregularity from a considerable space: the point seems occasionally to have left the plate. Such circumnutation wd form to have the point finding a passage through intricate vegetation or stones.)

(2d  Smoked glass‒ tip of poi side thin runner, made a short vertical upward line, then left the glass descended & made short horizontal line, left the glass & made made upward vertical glass & good way to the right, left the glass & made another vertical line some way to left & near summit of glass, over which it here escaped.)

(over)

302v]

(3d smoked glass— a thick main runner, swept up glass in curved line, then left glass & moved to right & descended glass in vertical line, but tip became bent & the bent portion swept off much soot irregularly in its movements.)

Saxifraga sarmentosa.


Return to homepage

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

File last updated 24 January, 2023