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."]


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

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