RECORD: Darwin, C. R. 1878.07.07-09. Porliera / Draft of Cross and self fertilisation. CUL-DAR209.14.109. (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, p. 410.


[109]

July 7th Porliera (Secured to stick)

9° 34'

 

10. 30'    down & to left right — first trustworthy mark

 

11. 22'    back, parallel,— ie up & to left

 

11. 37—    same course

 

12. 30    far up

Distance of apex 7 1/2 inches

1. 5 still up
1. 40' a little up & to right
2. 27 to the right & an atom down.
3°    risend & to right
3. 35'    down
3. 56    a little down & to right




Length of leaf 3/4 of inch or .75

4. 40    a good way down

 

5. 40    far down— almost impossible to see well

 

6    do    do    do

 

8th. 6°. 45'    ⨀

July 9th    ⊡

 7. 40        up.

 

 8. 25        same spot

 

 8° 40        down

 

9. 28    very little down

on both days by 4° 3'0 had

10. 18    a good way down

the nocturne fall had commenced

11. 7    down.

 

12. 20'    down

 

1. 70°    do

 

2. 4.    risen !

 

2. 32    do.

 

3. 5    do.

 

3. 55    a little up & right

 

4. 32    down & to right

 

5 25    far down

 

6. 15    do .

 

 

 

 

 

 

[109v]

[top of page excised]

of frequent self-fertilisation. By what graduated steps

this condition was acquired we do not know. But we can see that if a lowly organised form in which the two sexes were represented. by somewhat different individuals were either before or after conjugation to increase by budding, the two incipient sexes would be apt to reappear by buds on the same stock. The being organism would then be in a monœcious condition, and this is probably the first step towards hermaphroditism; for if very simple male and female flowers on the


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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 7 January, 2026