RECORD: Darwin, C. R. n.d. Nitrate of Ammonia (experimental observations). CUL-DAR60.1.34-35. (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).
34
Sept 7. 1O/ P.m. 2 gr to 1 oz of nitrate of ammonia — though drops run off certainly (Sept 8'. 11O. 40) seem to have produced some effect.— SE corner of leaf more inflected
Sept 8th. 10O A m
(1)
Nitrate of Ammonia 4 gr to 1 oz
Sept 9th.— 10O. 25' —(Sept 10' 9. 45' same report
1 sp. consid. effect a few long-headed inflected & some marginal round-headed; hairs well crowded together 2O. 30' same remark 2O. 30' same state.
2 sp. — Sept 9. 10O 25 leaf withered & dead in consequence
2 spc : Sept 9th 10. 25' considerable effect a good many hairs inflected; but then (illegible words) 1 2 leaf
Sept 10th. 10O A.m. Leaf half withered & dead
35
(1
Sept 9th 3O. P.m.
Nitrate of Ammonia 4 gr. to 1 oz
Sept 10' 5O P.m
1 sp leaf shrivelled up. (not contracted
2 sp. leaf do
3 sp. leaf do. — not so much killed } no contraction — } too strong ?
(right-hand side)
480 [x] 4 [=] 1920
480 [x] 2 [=] 960 my drops. [÷] 4 [=] 240 [÷] 4 [=] 60
over
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 1 December, 2025