RECORD: Darwin, C. R. & Francis Darwin. [1878.08]25-29. Trifolium repens / Draft of Cross and self fertilisation, folio 778. CUL-DAR209.3.36. (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 11.2022. 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).

The text of the draft corresponds to Cross and self fertilisation, p. 454.


[36]

Trifolium repens

9°. 10' I

10 . 15 far to R

11. 30' do

11 . 57 . . do

12 . 40 do

1. 25 . do & little up

2° up— little

3° down & to right

4° up & back to former spot

5 . 45   down

7 . 20   up again

8. 55   up & to Right

10 . 35   to R

26th 6° 40'

8 . 5 same course as night

9 . 15 do

10 20' do

12°    do

Used

1°    do

3°  nearly same spot

5 . 20 a little back

27th 6° 40'

27th 11° 30' new dot (turned pot round

   1. 30' down & to right

2. 55 same course 4° back & up.

6 same course

7. 12' do crossed by arrow

8 . 50  to R.

10 . 45 up & to left

28th 6° 45  ⨀ for Cotyledon

  8° down

9 5 . same course (a little below at right angle to vertical Head)

10 . 20 same course.

11 . 15 do

12 15 a little up. ?

1 30 down— (last mark probably error)

3 an atom up

4 little to left (at last a pause in descent)

5 30 little down

6 45 up. (certainly)

8. 40 up

10. 30 up & crossed old line

29th 6° 45' up during night severe

8° 30'. down

9. 20 to right — thick line

10. 25 down

12° down

1. 30 down & to R—

3°sam spot

5° up.

7° 10 down

10 40 up

30' 6° 45 up

[36v]

(635 778

Ch XII

Gen Con

years; but their advantage this superiority gradually & manifestly decreased, as, was shown in several instances by the difference in the result between a cross with of the  intercrossed plants and with a fresh stock. These intercrossed plants also tended in a few cases to become somewhat more uniform in character or less variable than they were at first. With respect to the plants which were self-fertilised in each generation, their sexual elements apparently lost after some years all differentiation, for


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

File last updated 20 December, 2025