RECORD: Darwin, C. R. [1874]. Seeds which have been clasped by Drosera. CUL-DAR57.74. (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).


74

June 9th /74/    Precipitated Carb of Lime diffused in distilled water.

(like milk)

2 leaves    12O 37'

12O 43' (i e after 6m) !! very marked inflection & much lime (almost every single tentacle much subinflcted) adhering to viscid secretion — How does it get to gland ?   (to 'I' below)

(Give analogous case of S. of Quinine)

I observe under strong power of simple microscope on many of glands excessively minute particles of C. of lime : I presume water sets the viscid secretion into movement & these particles are sucked in. These particles per hundred many time smaller than the bits of hair &c — which I placed on secretion. —

Comes under small particles acting

(I have been putting glands in water & I can June 10th only say that drops of secretions swells up instantly & largely.)

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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 30 November, 2025