RECORD: Darwin, C. R. & Francis Darwin. [ny].07.13. Cotton / Draft of Cross and self fertilisation, folio 729. CUL-DAR209.13.16. Edited by John van Wyhe (Darwin Online,

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2023. 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 volume CUL-DAR209.13 contains materials on fertilisation (Thalia) for Darwin's book Movement in plants (1880). The text of the draft corresponds to Cross and self fertilisation, pp. 423-4.



July 13 9° 15 am

4 glass in cellar — Asphalt & C. Balsam

some cards with Asph & C. Balm son tray with mortar warm.

some generally in water very warm—


729 (15


pleasant taste, and is habitually consumed by the common wasp. As far as I have seen wasps seek for nectar in this country only from the flowers of this Epipactis, Scrophularia aquatica, Symphoricarpus racemosa* (B) and Tritoma; the two former plants being endemic and the two latter exotic. plenty As wasps are so fond of sugar all and of any sweet fluids, and as they do not disdain the minute drops on the glands of Prunus laurocerasus, it is a strange fact [text excised]

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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (

File last updated 26 August, 2023