RECORD: Darwin, C. R. 1871.01.24. Huxley says iris always acted on by opposed muscles. CUL-DAR195.2.10. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 5.2022. 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-DAR195 contains materials for Darwin's book Expression of the emotions (1872) organised roughly as: DAR195.1 blushing. DAR195.2 astonishment, fear. DAR195.3 indignation, rage, screaming, etc. DAR195.4 laughter, frowning, introduction.
[10]
Huxley says iris always acted on by opposed muscles, hence very liable to be affected.— Birds have striped muscles to iris, but as Heart has striped muscles no evidence that under this will
In Chpt I on Reflex action?
Expression first 3 Chapters
Terror
Donders muscle of iris [(a)] Part of [muscles] of Eyes –
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022