RECORD: Darwin, C. R. n.d. Dn. 31: J. Ross: on the firm closure of the lips in determination. CUL-DAR53.2.39. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 9.2025. 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-DAR53.2 contains drafts, notes & clippings for Darwin's book The expression of the emotions (1872) and notes to correct a further edition.
39
Dn. 31
J. Ross: on the firm closure of the lips in determination
Letter Sept. '74
Explains it as servicable by protecting the teeth of combatants & suggests the Dn. by communication by hitting his own mouth once w. the lips compressed & once with them relaxed
[Darwin annotation:] Ingenious yet hardly probable
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 26 September, 2025