RECORD: Darwin, C. R. n.d. (1 gr [of nitrate of ammonia] to 3 oz of water). CUL-DAR60.2.94-95. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 6.2025. RN2
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.
94
(1 gr [of nitrate of ammonia] to 3 oz of water)
1 modest effect. in 24º secluded
2 no effect — illeg no effect
3 very slight effect. —union produced great effect.
4 barely any effect.
-O O
6 Edge of 6 marginals in 20º illeg
7 very slight effect edge slightly affected all 2 march well without, all illeg as of h'
8 no effect. Union acted well
9 no effect Union do
10 very slight effect.
2 Edges
3 moderate
5 very slight
4 no effect.
94v
(N. of Ammonia) N. of Ammonia
95
4 gr to 1 oz in 40' very strong contains illeg of hair crushed in keg open in 3 days.
Edge affected
1 gr to 1 oz B in 35' some turned in, in 45' edge illeg illeg perfectly open in 67º
In 35' all middle hairs & an edge of leaf in 44º cent open. (12 tried.)
(in 6º edge stay unfolded.)
(not affected, but coated by albumen illeg )
(well inflated, in 21º expanded)
(1 or 2 illeg affected)
(Edge & leaf well inflated) 48º illeg
(Edge & hair each inflated 30º well expanded
(affected moderately to long well illeg sum off put on twice)
([illeg] inflated) 45º expanded
(well inflated, but den pot —twice as one off 25º expanded.
(well inflated. 20º expanded.
1 gr. to 2 oz & (dup rolled off & put on another in 38' decided inflation of many hairs
(barely any effect)
x(modest effect. 5 or 6 [illeg] inserted ) - expanded in 30'
(as after such effect)
*(3 or 4 lay hard inflated
in 35' all middle hairs & one edge of leaf in 44° quit open.
(in 6° edge strongly inflected.) (12 tried.)
(not affected, but tested & albumen acted)
(well inflected, in 21° rexpanded)
(1 or 2 marginal affected)
(edge & leaf well inflected) 48° rexpanded
(edge & Hairs well inflected 20° well expanded
(affected [illeg]ly well drops ran off put on discs)
(splendidly inflected) 45° rexpanded
(well inflected, but drops put on twice as ran off 25° rexpanded.
(well inflected. 20° rexpanded.
1 gr. to 2 oz D, X (drops rolled off & put on another in 30' decided inflection of many Hairs)
(barely any effect.)
X (moderate effect. 5 or 6 long-headed inflected) — expanded in 30°
(no effect— small effect)
X (3 or 4 long-headed inflected) — expanded in 30°
(4 tried, no action in 2, XX some action in 2.)
(2 no effect)
1 gr to 4 oz./ no effect after water / (Omit)
95v
2 gr 1. oz
of 3 old leaves 2 affected, but third not.—
1 gr. to 1 1/2 oz water.
tried on 5 specimens no effect.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 8 January, 2026