RECORD: Darwin, C. R. [1874]. 11h 20 / 4 leaves in 2 dr of Lactic Acid (old) / Proof sheet of Expression. CUL-DAR57.68-70. (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).
68
(June 3d. 11O 20'
4 leaves in 2 dr of Lactic Acid (old) 1 gr to 2 oz. —
(2O. after 2h. 30' fluid quite pink, but no inflection. glands pale)
(6O 45', [-] 20 [=] 25 aft 7O 30' in 2 leaves, sub-marginals inflected — in the 3d leaf — some marginal tentacles on 2 opposite sides inflected — glands almost white — sol. very pink
June 4th 7O 45' aft 21h 2 leaves with a great deal of inflection; a third with sub-marginals & a 4th not at all — Th marginals of gland white, but some very dark red.
June 5 7O 45' 1 leaf with almost all inflected; 2 with vast number; 3d & 4' either hardly none; but almost every gland colourless, except 2 of them which have many glands on disc dark red. ==
(apparently dead)
68v
69
June 4th /74/ 7O 50 Lactic acid
1 part to 3 oz of water, (4 leaves)
4O 30'— water tinge of pink— hardy any inflection — glands dark red, some striped with pale
(5th 7O 40' has had no effect water white
June 6th 8O A.m. Tentacles bowed outwards, I think killed
1 part to 4 oz of water. (4 leaves)
(4O 30' as above)
(5th 7O 40' no effect of any kind)
Jun 6' 8' on 2 leaves most of glands on disc quit white — tentacles bowed outwards
70v
June 6th. 8O. Lactic Acid
1 part to 10 oz of Water
4 leaves
(7th. 9. 8 no effect)
70
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 30 November, 2025