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— 11º am

60º above Horizon

44º above

10. 10pm

72º — risen 12º

55 risen 11º

Sep 6

11. 32am.

41º above

49º above

9. 5 pm

60º (-) 41 [=] 19 — risen 19º

55º (-) 49 [=] 6 — risen 6º

Sep 7th

9 pm.

51º — risen 10º

52 — risen 3º

Sep 8

12.(noon) 30 pm

~~60 §~~ 30º — §

9 pm

filament blown away

43 — risen 3º

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

12º [+] 11 [+] 19 [+] 6 [+] 10 [+] 3 [+] 3 [=] 64

64 [÷] 7 [=] 9º

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