From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
1841-7-25 or later
Source of text:
RS:HS 17.310b (C: RS:HS 22.92)
Summary:
Expresses reservations about Samuel Brown's work. Apologizes for delay in trying calotype; has done only some vegetable substance trials.
Contributor:
John Herschel Project