RECORD: Darwin, C. R. n.d. Two leaves (by the accident) for 4 1/2 Hours in water. CUL-DAR54.7c. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2022. 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).
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Two leaves (by the accident) for 4 1/2 Hours
p. 12 in water no plain change
p 15 leaf in pure water for 21º 15 no change (except blackening of Heads)
C. of Amm 1 gr to 10 oz produced great effect in 1 hair
p. 18 leaf 16 1/2 hours no change, except blacking of Heads
(See to the 4 leaves which were kept equal time with 4 in amm & there were many leaves kept for hours before being put into C. of Ammonia) (In old Paper in 16º traces of breaking up below round Heads.)
p 19. in 41º broken matter much increased; few spheres below long-Head
another leaf in 17º; a few round-heads a trace broken; kept for 41º red matter much broken; few spheres behind long-Heads
p. 21. considerable inflection in 1º 48' & 2º
p 22 consid inflection in 3º - Examined one carefully - {no spheres behind L. H. no plain breaking up of red matter
p. 22 in two spec. 2º 40' - no changes in breaking up.
p 26 4 leaves in water from 2º 40 to 3º 50', inflection: in one (but not previously examined) a trace of spheres behind long Heads, & a very few minute ones below round Heads.
p. 30 cut off 3 Hairs in 3º no change p. 31 do with 3 otherHairs
[2v]
Oct 14
Eastbourne M. S. (Abstract of effects of water
p 1. one leaf 6º 15 in water no change in Long round-headed & long-Headed marginal, but sub-marginals with red somewhat broken.
p. 2. leaf in sugar 3 gr to 1 oz no change in 2 hours. (Then put C. of ammonia)
p 4 do sugar. no change in 4 1/2 hours - added C. of Am 3. gr. to 1. great effect.
p 5. C. of soda (2 gr to 1 oz) 1º 12' no change. C. of am. produced great effect
p 6. Gum moderately thick no change 1º 42' (tested with c. of ammon)
p. 9. Cut off Hair & put under slip with 1/2 minute no change in 46'
p. 10. Hair under slip in 1º 19' no clear change; in 1º 56' appearance utterly different from spe. in Amm 1. gr to 12 oz for same time.
p. 11 Two Hairs under slip no change in 47'
do in 1º 16'
over
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022