RECORD: Darwin, C. R. & Francis Darwin. 1878.01.09. Avena / Oats. CUL-DAR209.11.4. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2023. 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-DAR209.11 contains material for Darwin's book Movement in plants (1880).
[4]
Oats Jan 9' 1878 Geotropic
No. 3 & 7. Silk thread tied round & then kept gummed from .3 of inch beneath tip.
(7) not at all curved towards the light
(3) as much curved as any} Jan 10th 8' a.m, both acted on by geotropism during night
8° 45' P.m. Geotropism
A. B. D. coated all over with glycerine & Lamp-Black
E & F. syrup & Lamp-Black} Jan 10' 8° a.m. These 5 plants have all remained curved as they were through Heliotropism, & have not been acted on in the least by apogeotropism, whereas 30 or 40 other plants in pot are all bent greatly in upwards — tips horizontal.—} All this has occurred in under 12°
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 August, 2023