From:
Edward Sabine
To:
Sir John Herschel
Date:
7 February [1841?]
Source of text:
RS:HS 15.319
Summary:
Will be happy to send particulars from [C. F.] Gauss's information. [Humphrey] Lloyd's instrument records changes in horizontal intensity best. Wants to employ magnetometers in New York.
Contributor:
John Herschel Project