From:
Joseph Warner Clark
To:
Charles Robert Darwin
Date:
25 June 1875
Source of text:
DAR 161: 154
Summary:
Observations of fear in animals marked by dilation of pupils.
Contributor:
Darwin Correspondence Project
The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.