RECORD: Darwin, C. R. [1873]. [Drosera?] [application of acetate of morphia, phosphate of ammonia. CUL-DAR56.48-50. (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).
48
(L
Aug 4th 8O 40' Cup with red rim) (1)
2 leaves with 1 dr of A. of Morphia ( 2 gr to 1 oz )
8O 50' added 1 dr of Ph. of Ammonia ( 1 gr to 20 oz)
(11O 30', O) (2O 10', O)
49
(M
Aug 4th 8O 57' 58 1 leaf (red rim) in 30 min of A. of Morphia 2 gr to 1 oz
9. 3' added 30 m of Carb of Ammonia 2 gr to 1 oz
10O 25' almost as much inflection as spec. below, so that access of morphia for 6' does not prevent acts action of C. of Amm. 2 gr to 1 oz
50
(N
Aug 4th 9.. 16' 4 leaves 2 dr. of Citrate of Strychnine ( 1 gr to 1 oz) (so kept in sol. for 12')
8O 28' added 2 dr of Ph. of Amon. ( 1 gr to 20 oz, when the Ph was added, already Strychy the strychnine has caused a little inflection
(10' 30' the inflection only slightly increased)
(2O. 10', now very strongly marked inflection in all 4 leaves
(It is clear Strychnine does not accelerate movement.)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 30 November, 2025