From:
Robert Hunt
To:
Sir John Herschel
Date:
[23 April 1843]
Source of text:
RS:HS 10.99
Summary:
Sends some specimens of photographs he has made by using bichromate of potash and an acid solution of nitrate of mercury. Gives details of a luminous phenomena he has seen in the S.W. and would like an explanation of it from JH.
Contributor:
John Herschel Project