From:
Karl Kreil
To:
Sir John Herschel
Date:
[22 October 1839]
Source of text:
RS:HS 11.70
Summary:
Sending magnetic observations. Would like a description of A. F. Osler's Anemometer. Regarding the periodical return of the magnetic disturbances on 18 Oct.
Contributor:
John Herschel Project