RECORD: Darwin, C. R. 1863.08.13-25. Hop / Plant 11 inches high. CUL-DAR157.1.25. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here.
The volumes CUL-DAR157.1-2 contain notes, abstracts etc. for Darwin's long paper and later book Climbing plants (1865). It was also commercially available as a softbound offprint, F834, F834a. See R. B. Freeman's bibliographical introduction. Items CUL-DAR157.1.11-60 were in a folder marked "Twiners". Items CUL-DAR157.1.61-112 were in a folder marked "Leaf-climbers" and items CUL-DAR157.1.114-147 were in a folder marked "Tendrils". Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.
[25]
Hop.— Aug 13 — 63.
Plant 11 inches high — 2 lower internodes did not move; but 3 upper ones (a minute one on summit herein included) did, measuring in length 7 inches, all moved with watch do one circle in closely about 2°; & a second circle in about 1°. 45'.—
2°. 0'
Aug. 14th To day 1' circle in 2°. 20'
2d. [do] in 2. 16'
3d 2°. 2'
4'.— 2°
5 — 2. 4' (but a little delayed by touching glass.
Would make 11 or 12 revolutions in the 24°. — 1
2°. 8' average of all
/over
[25v]
This Aug 25. Shoot now grown 2 ft. high, a shoot & young upper internode made circle in 2°. 46'— It made semicircle to light in 1°. 13; — from light in 1°. 33°; so that light aided journey by 20'.
It is certain that disturbance & hardy shoot stops movement for some time.
Wd. not crawl up on windy day. —
An The penultimate internode which had never touched anything had its striæ twisting 1 1/2 turns round.
So rule applies to left & right hand twiner
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 July, 2023