RECORD: Darwin, C. R. & Francis Darwin. [1878].12.22-[1879].01.05. Common bean. CUL-DAR209.11.144-148. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2023. RN1
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).
(1 & (2
Dec 22 common Bean 11 am to 11 40 finished
4 test control beans 8 blackened with of black grease all round at tip some 2 mm, some 3 mm; all marked with dot at 10 mm—
Dec 23 - 9. 30
One 3 mm black not bent, all others black & white slightly & about equally bent
10 45 Blackened all again making 2 mm. into 3
Oct Decr 24. 920 am
All 4 white ones bent clearly
4 black ones fairly horizontal
4 bent abt as much as white
The strt black ones have grown, 19, 16, 18 20?
Dec 25. 10. 5 am 3 out of 4 white ones nearly vertically down—
Only 2 black ones clearly more horizontal than the rest— No black ones quite as vertical as the white ones
(3
Dec 25 Horizontal common Beans Vicia
Two jars a & b with beans all marked with dot of grease at 10 mm & some greased for 3 mm at tip. Fixed horizontally in damp air
jar (a). 4 with black tips ("Black")
2 not ("white")
7. Black tip
jar (b) 3 black
2 white
7. Black tip
Examined 8.25 pm
jar a, one white much bent down, one another not perceptibly
3 blacks clearly bent the 4th one hardly bent
jar b one white very much, the other very little bent
2 blacks slightly one (the 3rd) hardly bent
Dec 26 8.40 am
jar a All both bk & white bent except 2 blacks, 2 Black bent which have nevertheless grown to 17 & 18 mm (the tips are 3 & 4 mm)
Now filled up jar a so that beans and roots wet.
jar b Both whites § well bent tho' not vertically.
*2 blacks slightly the 3rd hardly at all bent & is nevertheless 20 mm its tip being 4 to 5 mm
These two are 19 mm (tip 4 mm) 20 tip 5 § Both whites are 15 mm
4
jars a + B
Horizontal beans
The forgoing ones same
De 27 1050 am
jar a — Black 1 has its grease washed off is 40° below horiz
Bk 2 20° below horizon & 20 mm in length (ie up to mark)
Bk 3 — 55° below
Bk 4 Horizontal— 20 mm long (to mark)
White i — 75° below — about 20 mm long
White ii 55° below
Dec 27 1040 am
jar b White i— 75° below 30 mm to mark from tip
White ii 55° below 25
Black 1 20° — 32 {That is what was 10 mm has grown to 30, 25, &c
[black] 2 25° — 29
Black 3 15° — 31 {The tips are now 6 or 7 mm, they were 3 mm
Dec 28 930 am
jar b still marked difference between black & white
jar a The two horizontal black beans have not perceptibly altered
[4v]
On comparing
Begin comparing young of animals with young of plants
Then since these precautions are needed the plant must be expose
The heliotrop & geotrop—
Then race & individual going on to onerious system & back to movements again as examples—
5
Dec 29 Jars a + b Horizontal beans
Jar a
[data not transcribed]
{This had grown through the black which had been partly washed off
Jar b
[data & calculations not transcribed]
6
Beans {I think certainly Vicia} B1 B2 Dec 30 about 10 am
Beans germinated in peat on table, pinned to cork or stoppered bottle, 1, 2, 3, 4, only marked with 10 mm
5, 6, 7, 8, 9 also have 3 mm at tip blackened with grease — Put to grow in damp air on table in study
[data not transcribed]
{Average of the white ones excluding No 4 is 55° average of black ones 49, so there is hardly any difference}
Dec 31 — 855 am
No 4 still horizontal The rest show nothing new
Jan 1 845 am. No difference between the whites & blacks— Owing to a mistake in my notes I am not sure whether all the beans where kept till Jan 1 or whether one jarful was thrown away on Dec 31. but I am nearly certain both were kept till Jan 1
(7
Horizontal Beans (Vicia)
(Radicles)
Jan 2. 11. 45 am
Germinated in peat; roots from 4 to 6 cm long: Those called "black" have 3 mm of the tip greased: all, "white" or "black" marked at 10 mm. In damp air on study table
Jar X
[data not transcribed]
Jar Y — ground glass edge & plate; beans in damp air — 2 black & 2 white fixed Jan 2. 12. 10 pm.
Examined 11.15 pm, one white is 40 below, all 3 others about horizontal
Jan 3 filled up with water
Jan 5. The two whites have not geotroped properly one being 15° below & the other 40° (?); while the marked pieces originally 10 mm have grown to 15mm & 19 mm.
(Grease Beans)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 21 August, 2023