RECORD: Darwin, C. R. & Francis Darwin. [1878].11.18-25. Horse-chestnut / Spanish chestnut. CUL-DAR209.5.112-113. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2023. 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 volume CUL-DAR209.5 contains materials for Darwin's book Movement in plants (1880).


(1

Horse chestnuts slicing

Nov 18 10º to 11' am

Nine sliced and fixed up, so that roots dip in but not the seed; on study chimney piece under loose brown paper cups: Temperature of water 15-16C

Nov 19. 10.36 am

2 bent with no relation to cuts

1 towards

1 slightly away

The rest not bent at all

Nov 20 & 21st No changes except one root bent away from cut, bending place close to seed

Observed till Nov 21st, some slight bendings occurred but only 2 showed clear bending away from cut near the tip.

2/9 in 3 days

Nov 25th Fixed up & sliced 2 Horsechestnuts

 2 2 0 3 [=] 7

9 4 4 5 [=] 22

11. 40 am.

Nov 27

[2]

Spanish Chestnut Nov 23 11 am

Spanish Chestnuts I & II; one fixed 11.35 am Nov 19 one Nov 22 12 noon — both fairly vertical now now Sliced with razor— dip in H2O seeds dry

Nov 24 — no bending visible

Nov 25 11 50 am

one bent slightly towards cut at tip, the other— bent to side marked as cut but on which I can see no cut— Nov 28, I can cut mark & the root is bent slightly away from the cut side.

Spanish-Chesnuts I think go for nothing— They always grow so badly


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

File last updated 8 January, 2026