The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. [1879].06.07-09. Euphorbia [jacquiniflora] / Draft of Cross and self fertilisation. CUL-DAR209.14.26-27. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

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-DAR209.14 contains material for Darwin's book Movement in plants (1880).

Draft is in the hand of Ebenezer Norman with corrections by Darwin. The text of the draft corresponds to Cross and self fertilisation, pp. 380-81.

[26]

Euphorbia

June 9'

[data not transcribed]

Young leaf move a good deal this morning so cause of little moving yesterday [probably] is proof age

[26v]

and the other smaller flowers fitted for self-fertilisation and in these latter many parts have been slightly modified for this special purpose.* (*Nature 1873, p. 44, 433).

As two objects in most respects opposed, namely cross-fertilisation and self-fertilisation, have to be

[27]

Euphorbia June 7'

~~Jun 9'~~ 15

[data not transcribed]

[27v]

enter the old nest. The fully developed males and females are winged, and when they swarm, individuals from distinct nests can hardly fail often to intercross. In the act of swarming they are destroyed in almost infinite numbers by a host of enemies, so that a ~~queen fully developed~~ queen very often

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