RECORD: Darwin, C. R. [1874]. 3 Red Sticks sol(ution) of 6 gr of white sugar to 1 oz of water 1.2 m. CUL-DAR57.100. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Text prepared and edited by John van Wyhe. 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-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).
100
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July 2d. 1O. 3 Red sticks sol. of 6 gr. of white sugar to 1 oz of water. 1/2 m. drop on leaf
July 3d 1O. no inflection; add these observations (& those shown to Dr. B. Sanderson to my text. (as measured)
July 5. 3 other tried with same negative effect. — (add to old experiments)
July 2d. 1O 3 Blue sticks. 6 gr. of gum arabic to 1 oz of water 1/2 minim drops
(same result as with sugar)
July 5. Milk 2 leaves closely collapsed & inflected after 15O.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 30 November, 2025