RECORD: Darwin, C. R. 1877.08.15. Cassia caliantha / Another measurement by Horace. CUL-DAR209.1.21. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 6.2022. 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 volume CUL-DAR209.1 contains materials on circumnutation of leaves and sleep for Darwin's book Movement in plants (1880).

[21]

Another measurement by Horace

[typewritten, with corrections by hand:]

CASSIA CALIANTHA .

DOWN AUG. 15TH. 1877.

3 P. M. THE CHORD OF THE LEAF MADE ANGLE OF 2DEG. 30MIN. BELOW THE HORIZON; & AT 8-30 P.M. IT MADE ANGLE OF 5 DEG. 30 MIN. BELOW THE HORIZON, THUS HAVING FALLEN THROUGH 3 DEG. .

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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 25 September, 2022