The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [1864].08.25-26. Twisting of twiners. CUL-DAR157.1.7. 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

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.

[7]

Aug 25— Twisting of Twiners—

A hank of worsted with one black thread & turned spirally round stick, like a convolvulus, (which had red line in alternating in spires facing the stick & facing outside) had to be turned round in same line with act of winding, & so there was no twisting of sa hanks (ie back) but there was twisting of axis.

I feel sure axis must turn round unless plant twists itself, of which I see no appearance.—

Aug. 26' In Hop. I could perceive no sign of rotation of axis, independent of its own growth, in stem with red line which had twisted round stick.—

[7v]

Red line was painted on

Hop

Mikania

Ceropegia

Convolvulus

& Kidney Bean

& became twisted.

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