RECORD: Darwin, C. R. [c.1874]. [On Drosera]. CUL-DAR58.2.56. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 9.2020. 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. The volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).


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Towards the end of June, I put into the middle of the surface of a leaf of Drosera, which since a short time I was keeping in my room, in a basin of [1 word faded] four small animals, each fly being of the size of the head of a pin.

The little creatures remained festooned to the spot, all their labouring to get out of the slime being useless.

After about 5 minutes, I again looked at the leaf, and saw to my astonishment that the gland hairs of the upper front edge, which before had been standing horizontally but turned towards the surface of the leaf and had already partly covered the flies.

When the next day, I looked again

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examined the leaf, even the front edge and the sides of the leaf had curved towards the middle, and had completely shut in the flies.

5 Days afterwards the hairs and the edge of the leaf opened again and the flies which of course were dead, were lying free on the surface of the leaf.


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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 23 October, 2022