RECORD: Darwin, C. R. [ny].08.28-29. Ipomæa jucunda. CUL-DAR157.1.41. 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.
[41]
Ipomæa jucunda. Aug. 29
28th. moved, reverse if watch-hands, a semicircle from light in 8° — moved a little further & went back
29th. Semicircle from light in 4°. 30' — the second semicircle to light 1° — whole circle 5°. 30'. — circle completed at 1°. 20'.
Semicircle from light (5°. 10') = 3°. 50'
do to light (6°. 40 = 1. 30
whole circle = 5° 20'
This is a remarkable instance of difference of rate to & from light.—
3°. 50 [+] 1.30 [=] 2°. 20
[Climbing plants, p. 17]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 July, 2023