RECORD: Darwin, C. R. n.d. Nachwirkung. CUL-DAR209.8.89. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2022. 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 volumes CUL-DAR209.7-8 contain notes on heliotropism (phototropism) for Darwin's book Movement in plants (1880).
[89]
Nachwirkung
10° 40' exposed to light first dot.
10. 54— both moved some way
11. 4 both gone back
Left—
11° 20 to left right
11. 40 to right & light
12. 4' to light & Right
12 37 to light long way
12 39. completely darkened Splint of Blac}
12. 54 1/2 gone on
1° 6 dot with line. candle alone & rather opposed to progress
1. 18' back ⨀
1 . 30' still further back ⨀
2. 15' ⨀ — opposite where stood at 11°. 20 when first started to light
Right
11° 20' back further
11. 40 back (circumnutation has filament prevented bending??
12° 4' far back
12. 37. short way
[calculations]
2°. 18' light again (same plant
2° 20' first dot
2. 37 —f back— "nachwirkung of apogeotropism", or circumnutation
2 48 still back (dull cloudy sky) & second trial
3° a good way to light
3. 15'? to light.
3.45 do — Blackened
3 59 advanced to Light} — after 14'
4. 7 gone back— may have gone back still earlier
after 8'
4. 13 a little furth back zig-zag
4. 36 far back from light
5 6. back & exactly opposite where started from this at 2°. 18'
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022