RECORD: Darwin, C. R. [1878]. Slicing Horse-chestnut. CUL-DAR209.5.116-117. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Prepared and edited by John van Wyhe. 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-DAR209.5 contains materials for Darwin's book Movement in plants (1880).
116
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Slicing Horse chestnuts
4 sliced 10 am Dec 21st; grew in damp air on chimney piece under a cape of paper
Oct Dec 22. 10 am— One slight bent away from cut this bending was just visible at night on Dec 21
Oct Dec 24. 9 15am. Still slightly bent
Dec 25. 10 am Two of the 4 slightly curved away from cut but so little as to be worth nothing
2/4
so slowly as to be doubt 6 days
Dec 27 10. 30 am Bent in all sorts of ways
Sliced 4 Horse chestnuts sliced 10 am Dec 24— Grow in damp air on chimney piece under paper cap.
Dec 25 / 10 am. 2 i & ii slightly bent at the tip close to away from cut: 24 other (iii & iv) not bent
Dec 26th i still curved away iii slightly curved towards cut
9 30 am ii got straight
Dec 27.
10. 34 am} Not bent except one (iii [illeg]) which is bent towards cut & it looks as if the cut had grown into a long strip along the concave side, & the bending was due to the uninjured side growing more.
Dec 28. i bent near to seed away from cut; iii bent towards cut
[sketch] 0/4 4 days
117
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Slicing Horse Chestnuts
Dec 31 10 40 am
Sliced 5 horse chestnuts — big jar damp air (with cap on) on study chimney piece
11. 50 pm No 1 curved partly away from cut; that is the cut being W or SW the bean root has bent N. None of the rest bent—
Jan 1. 8 45 am. No 5 bent faintly from cut — Slightly more bend from cut on No 1
Jan 2 / 11 .5am
No 1 is clearly bent from cut
—"— 32; at 10mm from tip it bends away from cut so as to make 25° with vertical
—, 3 Is cracked, as if burst
4 If any bend it is away from cut
5 No bend
Jan 3. 9 45 pm
No 1 straight
2 & 4 distinctly bent close to tip away from cut— altogether 3 out of 5 bent away of the remainder one is burst 3/5
3 days
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 27 January, 2026