Search: Herschel, John in correspondent 
Photographic News in correspondent 
1860-1869::1868 in date 
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Herschel4161

From:
Sir John Herschel
To:
Photographic News
Date:
[25 January 1868]
Source of text:
RS:HS 14.160
Summary:

Points out that [Joel?] Spiller's article, 'Hyposulphite of Ammonia for fixing,' is 'copied verbatim' from a work of JH's.

Contributor:
John Herschel Project

Herschel8960

From:
Sir John Herschel
To:
Photographic News
Date:
[31 January 1868]
Source of text:
Photographic News, 12 (Jan. 31, 1868), 57
Summary:

Discusses the action of hyposulphite of ammonia on muriate of silver. Gives directions for preparing hyposulfite of silver.

Contributor:
John Herschel Project
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