The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. (1877). Cerinthe major Oct 19 (vertical glass). CUL-DAR209.4.120. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

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).

120

1879

Sea Kale Sleeping

Two young leaves growing in Kitchen garden: long filament shellacked (6. 10 pm Sep 4th) to leaf & angle measured with horn protractor—

Sep 5.

10.59am— 11° am

60° above Horizon

44° above

10. 10pm

72° — risen 12°

55 risen 11°

Sep 6

11. 32am.

41° above

49° above

9. 5 pm

60° (-) 41 [=] 19 — risen 19°

55° (-) 49 [=] 6 — risen 6°

Sep 7th

9 pm.

51° — risen 10°

52 — risen 3°

Sep 8

12.(noon) 30 pm

~~60 §~~ 30° — §

9 pm

filament blown away

43 — risen 3°

Now noticed that filament on plant ii is loosed above & only holds below. If I may assume that it broke loose in the night it will not put anything wrong as it will be the same for morning and & evening of Sep 6.

§ Now saw that filament on plant i was loose above

It is manifest the leaf rises at night I might take average of 7 observations

12° (+) 11 (+)19 (+)6 (+)10 (+)3 (+)3 [=] 64

64 [÷] 7 [=] 9°

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