RECORD: Darwin, C. R. 1879.05.30. Passiflora punctata. CUL-DAR209.7.79. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2022. 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 volumes CUL-DAR209.7-8 contain notes on heliotropism (phototropism) for Darwin's book Movement in plants (1880).
[79]
Passiflora punctata May 30' 1879. Plant with tendril placed before N.E window
Semicircle moving to Light
1° 29' & then remained stationary & straightened itself
1. 13'
Semicircle moving from light,
0.53'
0.52'
Therefore seems to move quickest from light, but too few observations to trust.—
Former observation
[calculations]
Therefore here seems again to move rather more quickly from light
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022