RECORD: Darwin, C. R. [1880?].03.20-22. Beans / Force of radicle / Draft of Cross and self fertilisation, p. 33. CUL-DAR209.5.76. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2023. 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-DAR209.5 contains materials on movements of radicals for Darwin's book Movement in plants (1880). Draft is in the hand of Ebenezer Norman with corrections by Darwin. The text of the draft corresponds to Cross and self fertilisation, p. 33.


[76]

March 20' 1 oz on

10° 27'

10. 49' a 2d dot above oil

11° 20' ⨀ ⨀ skin to upper angle of card

at 2° or 3° I looked no clear difference

but at 10° 30' slight resting on card

March 21' 12° made mark with edge of Paper-cutter

2°. 30' put on 1/2 oz additional = 1 1/2 oz

10. 30' P.m — fresh black mark

Mar 22' 7°. 45' another mark has certainly sunk

The above stick was pointed in about same degree as radicle of Bean, & soil watered & pressed as if bean had to be sowed.— Card first loaded with 1 oz at 11° a.m. March 20th by 12° on 21' had sunk a little, then added 1/2 oz more by 10° 30' P.m had sunk, & by 8° a.m on 22d had again sunk. This look like viscosity, but weight considerable; shall judge better when I know force of be radicle in lifting weight

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vigour and powers of growth of the crossed and self-fertilised plants of this third generation. Thus, four self-fertilised seeds which had just germinated were planted on one side of a pot, and after an interval of 48 hours, four crossed seeds in the same state of germination were planted on the opposite side; and the pot was kept in the hot-


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

File last updated 26 August, 2023