Search: John Herschel Project in contributor 
Brothers, Alfred in correspondent 
1860-1869::1864::10 in date 
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From:
Alfred Brothers
To:
Sir John Herschel
Date:
[27 October 1864]
Source of text:
RS:HS 4.296
Summary:

Is preparing a lecture on photography and wonders if JH was the inventor of the hyposulfite fixing process.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Alfred Brothers
Date:
[29 October 1864]
Source of text:
RS:HS 4.297 & 24.64
Summary:

Outlines his claim as being the inventor of the hyposulfite fixing process.

Contributor:
John Herschel Project