From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[15 March 1839]
Source of text:
RS:HS 17.288
Summary:
Further chemicals used for fixing, including bromide potash.
Contributor:
John Herschel Project
Further chemicals used for fixing, including bromide potash.
Strongly urges JH to support employment of artillery men in the St. Helena and Canada fixed observatories, citing the approval of the private secretary. Reports that four sets of magnetic instruments have been ordered.
Asks JH to read enclosed item and send it to [J. F.] Daniell, who in turn will send it to John Phillips, so that they might be ready to reply to the Council.