RECORD: Darwin, C. R. [ny].07.10-.07.15. Ampelopsis / Draft of Cross and self fertilisation. CUL-DAR209.3.3-4. (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 8.2022. 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-DAR209.3 contains materials on Circumnutation of leaves and hyponasty 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. 409-10 and 422-3, respectively.
[3]
Ampelopsis
July 10 [sketch]
glass
July 10° 8° 50'
10° up
11 37 down
1° far down
2° do
3 far down (This shows tip bending down
4° so far down hardly visible
5 do out of sight
6° has risen
7°. 15' fallen much (but I doubt observation
9° too low to see — not marked
10° 40 far to left & little up
11th. 6°. 35' too far down to see
o o o
9. 0' o
11th 12° ↑ put filament transversely apex quite hooked short
[sketch]
Used
1° little up & to right
2° down
3 considerably down— (must be slewing) ie turning laterally
4° down
5° 10 to right
6. 12 up & to right
7. 15 to right & up
9. 24 to left ? up
10. 50 to right
12th 6. 35 far up— still Hooked
8° 3 down & to left
9. 5 same course— growing rapidly, but beneath hooked part.
10 5 up & to left
11. 10 nearly same course
11 55 same course
1° little down
2. down
3 little to left
4° up & to right
6 . 5 to right
6° down & to right
[3v]
[right half of page excised]
Chap.
in mind that a greater
ferentiation between the
be traced, thus leading
of the two sexual form
as plants became more
affixed to the ground,
be at first anemophilous
fore all plants which h
modified, would tend to
-philous; and we can thu
between these two state
first-sight quite discour
plants must have beco be
though still very early period, and at a still yet l
namely after the development o
the relationship between
-lisation by means of
extent intelligible.
Why the desce
[4]
Left Hand Right Hand
July 13' 8° 10 a. first dot 13' 8° 10' first
9° . 35' up 9' . 35' down & to left
10 . 30 up 10. 30 down & to the left
12 up & to left 12° up & to rt
1. 30 down & to left 1. 30 same course
2. 55 to left 2. 55 up
4° down 4. do
5. 45 to left 5. 45 up
7. 15 up . 7 . 15 up.
9 to left & little up 9 up
11. 30 up considerably 10. 30 up
Distance of tip 5½ inches
Plant with pin a ft. high
Used
shoots of Smithia now upright
[4v]
(13 727
Ch XI
Pedicularis sylvatica, Polygala vulgaris, Viola tricolor & some species of Trifolium, I have watched the flowers day after day without seeing a bee at work, and then suddenly all the flowers where repeatedly visited by many bees. Now how did so many bees discover at once that the flowers were secreting nectar? I presume that it must have been by their odour, and that as soon as a few bees began to suck the flowers others of the same & of different species observed the fact & profited by it. We shall presently see when we come to the boring of the corolla that bees are fully capable of profiting by the a work performed of others bees. Memory also comes into play for as already remarked bees know the position of each clump of flowers in the garden; thus I have repeatedly seen them parsing round a corner, but otherwise in as straight a line as was possible, from one plant to another a distant one of Fraxinella & of a tall Linaria to another & distant one; although that was not in sight of the other owing to the inter
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
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