RECORD: Darwin, C. R. n.d. Real angle [diagram] / Perfect alternation. CUL-DAR51.A24. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe. 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.

A24

2/5/ 2/5 = 144° Real angle  

 

[sketch]

 1.

3.

4.

144°

2.

5.

(Perfect alternation )

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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 28 November, 2025