From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[10 April 1839]
Source of text:
RS:HS 17.292
Summary:
Sends a sample picture fixed by use of iodine [potash].
Contributor:
John Herschel Project
Showing 1–2 of 2 items
Sends a sample picture fixed by use of iodine [potash].
Reports that the precept has been sent for putting the fixed magnetic observatories at St. Helena, the Cape, and Canada into execution, and that the instruments for three Indian observatories have been ordered. Writes that Humphrey Lloyd has made plans for the portable buildings and fixed stations. Discusses expenses of the observatories.