RECORD: Darwin, C. R. 1878.06.20-21. Nankin cotton / Draft of Cross and self fertilisation. CUL-DAR209.4.289-290. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and John van Wyhe, edited by John van Wyhe 9.2022. 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 volume CUL-DAR209.4 contains for Darwin's book Movement in plants (1880).
Draft of Cross and self fertilisation in the hand of Ebenezer Norman with corrections by Darwin.
[289]
Cotton Ipomœa June 20
Skylight
4° 22'
down 4 53
do 5 35
do 7. 15
do 8. 53
10. 9 do
Bell
10. 18
12. 30 an atom up
3 45' risen considerably
6° 12 fallen greatly
Cotton Case
21st
6. 20' Cotton
6 42 risen an atom
7 32 fallen a little (Light?)
8. 5 down a little
8 50 do
9' 28' down
10. 10 do —
10. 47 down
11. 37 down
12. 35 down
12. 58 little
1. 30 very little down
2. 15 considerably down
2. 22 down
3 . 2 lower
[289v]
relation between the number of seeds produced by flowers when cross by insects or otherwise and [illeg] self-fertilised, and the degree to which their offspring profit by the two processes. I have also given reasons for believing that the inefficiency of a plant's own [text excised]
[Cross and self fertilisation, pp. 381-2: "It has already been shown that there is no close relation between the number of seeds produced by flowers when crossed and self-fertilised, and the degree to which their offspring are affected by the two processes. I have also given reasons for believing that the inefficiency of a plant's own pollen is in most cases an incidental result, or has not been specially acquired for the sake of preventing self-fertilisation."]
[290]
Cotton continued
T
4° down 21st
5 do
6° do
7. 15 do
9. . do
10. 30 down
22d
6°. 45 ⨀.
8
(20st Temp 19. 3/4.)
[290v]
[text excised]
no doubt naturally visit flowers": the Entomologists' Weekly Intelligencer. June 30th 1860 p. 103.
[Cross and self fertilisation, p. 383, n†: "In answer to a question by me, the editor of an entomological journal writes—"The Depressariae, as is notorious to every collector of Noctuae, come very freely to sugar, and no doubt naturally visit flowers:" the 'Entomologists' Weekly Intelligencer' 1860 page 103."]
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 December, 2025