RECORD: Darwin, C. R. & Francis Darwin. 1874.07.03. Drosera / Draft of Insectivorous plants, folio 175. CUL-DAR57.102. 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).


[102]

[text excised]

tentacles of uniform intensity from the gland to the base. In the larger ones there is also aggn down to base — but the marginals are much smaller than at the top they have lost their purple colour & they appear mostly thickly congregated at the concave side of the tentacle

Drosera (July 3d. 1874)

Distinct aggregation down to the base in well bent tentacles in Ammonia ones

In meat specimens there is some aggregation all the way down — but it has not spread down so well as in the ammonia ones

No difference in colour on two sides

175

large number of tentacles

immersion during these

there should be so great

veness of the leaves to water,

different tentacles on the same leaf,

; but some of the case of inflection

accounted for by

the side of the vessel, or with

cut off.

[The other fragment is at CUL-DAR57.99v, the full passage from both fragments reads as below:]

during very warm weather, a large number of tentacles

are sub-inflected See from immersion during these

however in pure water, (a) Why there should be so great

a difference in the sensitiveness of the leaves to water

& the weak solution of ammonia, as well as of the different tentacles on the same leaf,

I have failed to ascertain; but some of the case of inflection

tentacles with leaves immersed in water may, I believe, accounted for by

accidental contact with the side of the vessel, or with

cut off.


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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 26 July, 2023