RECORD: Darwin, C. R. 1878.10.09-11. Cassia Sea-side— Apogeotropism. CUL-DAR209.11.36. (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 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-DAR209.11 contains material for Darwin's book Movement in plants (1880).


[36]

Cassia Sea-side— Apogeotropism

Oct 9th 1878

Horizontal at 8° 10'

N.B The shorter seedling under action of Light was much m less acted on by apogeotropism than the taller one

7°. 25    to right & from Light

Left Hand—

Right- Hand

8° 15 — first dot

8° 15'    first dot

8 45    down

8° 45    down & to left

9. 30'    a little up.

9. 30    do.    do

10. 18    do

10. 18    down & little to right

11. 20    up to original starting Point

11. 20    still down

1°.    considerably up

1°    an atom up

2. 5    up & to right

2°    up straight

2. 53    up straight

2. 53    far. down again !

4°    up

4°    up

5'    do

5.    down, nearly same spot

6'    do

not marked —

7. 25    do

7. 25    to left

9°    do—(a quit young seedling bowed vertically up.)

 

10. 35    do

10. 35    up &  ⨀  to right

Oct 10th 7° a.m on Horizontal glass

same position

7°. 25    to right & from Light

(Used)

8. 35    to light
9. 35    do— straight to Light
10. 30—    do.    do.    do
11. 30    do    do    do
12 37    a bit to left
1. 24    to right
2. 35    to left short way
3°    nearly same spot
4° 10    do
5 45    from light
10. 20'    from Light & to left

11th. 7° a.m— only upper part bends

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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 21 December, 2025