RECORD: Darwin, C. R. [1874].05.03-07. Hydrochloric experiments. CUL-DAR57.16. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. 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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May 3. 4° 45' P.m. added to the scraped leaves a little Hydrochloric 1. to 500 water & a little parallelogram of albumen— not very clear edges.
(Saucer No 12)
May 4th 8° Am no effect. (2d Trial utter failure)
May 4th Soaked 8 4 fresh leaves with albumen for 24h for 6h. in 2 or 3 drops of glycerine, & then put on small drop with a little Hydrochloric (correct)
1 to 400 water in watch-glass I. & added square parallelogram minute of fresh albumen. — & put on chimney Piece at 2°. 30'.
May 5 8° no change
no II. some of juice & do acid much with bit of old albumen angular
no III. some of the clear glycerine with some pepsine as I suppose & a little acid & a new bit of albumen oblong square.
May 7' All the bits of albumen as angular as ever
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 15 May, 2023