RECORD: Darwin, C. R. 1878.06.22-24. Thalia dealbata / Draft of Cross and self fertilisation, folio 665. CUL-DAR209.14.148. (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 7.2023. 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-DAR209.14 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. 383-4.
[148]
Thalia on roof |
Thalia on roof |
Left Hand |
Right Hand |
22d 8º 40 |
22' 8º 40 |
9' 25. to right or backwards |
9º 25 to right or backward |
10 17 same course. |
10. 17 same course |
11. 55 do |
11. 55 do |
12. 55 from me a little |
12 55 towards me, a little |
2º from me & little to left |
2º— from me |
3º from me & to right |
3 same course |
4º to left |
4. do |
5. same course |
5 straight to me |
6 do |
6. 5 to right & to me |
7. 20 do |
7. 20 to me & little to left |
9' do |
9 to me & to left |
10. 30 do |
10. 30 to left (parallel to side of frame |
23' 6º 40' ⨀ |
23' 6º 40' off frame— marked by guess |
7' 55 to right |
7º 55 still off. |
9. 5 from me short way |
9º 5 coming on frame work |
10 to left |
10' come on glass again from the right |
11 to left & towards me |
11 — same course |
12 to R. & to me |
12 do |
1º same spot |
1º &— do |
|
|
2 30 from me & to right |
2. 30 same course |
4º to left |
4 to me & to right |
7. 15 far to left |
7º 15 |
|
9º almost same spot |
24th ⨀ 6º 50 |
24th ⨀ 6. 50 |
8º 10. |
8. 10 |
on 2d day made 2 |
(Used) |
Ascending & descending line |
|
Edge of lamina |
|
[148v]
54 665
Chap. E 10
visited by small nocturnal Lepidoptera, as these are known to being much strongly attracted by sugar.* The two lists given in the early part of this chapter support Müller's conclusion that small and inconspicuous flowers are completely self-fertile: for only 8 or 9 out of the 121 species in the two lists come under this head, and all of these have been were proved to be highly fertile when insects are were excluded. The singularly inconspicuous flowers of the Fly Ophrys (O. muscifera) are and as I have elsewhere shown, are rarely visited by insects; and it is a strange instance of imperfection & contradiction to the above rule and that these are not self-fertile, and consequently so that a large proportion of the flowers do not produce seeds. The converse of the proposition that plants bearing small and inconspicuous flowers are self-fertile,─ namely that plants with large and conspicuous flowers are self-sterile, is far from true, as may be seen in our second list of spontaneously self-fertile species; for this list includes such species as Ipomoea purpurea, Adonis aestivalis,
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 4 February, 2026