From:
G. Wharton Simpson
To:
Sir John Herschel
Date:
[14 May 1866]
Source of text:
RS:HS 17.211
Summary:
Thanks JH for helping to clarify origins of Louis Daguerre's use of hyposulfite of soda for fixing photographs. Provides further information on photography, particular solar microscope photography.
Contributor:
John Herschel Project