From:
Clement M. Ingleby
To:
Sir John Herschel
Date:
[15 December 1866]
Source of text:
RS:HS 10.267
Summary:
Was interested to read in JH's Familiar Lectures the chapter on sensorial vision; has been subject himself to the phenomenon described by JH. Queries one of the statements and would like verification from JH on this point.
Contributor:
John Herschel Project