From:
George Biddell Airy
To:
Sir John Herschel
Date:
[1 November 1847]
Source of text:
RS:HS 1.189 (C: RGO 6.693.113)
Summary:
Regarding magnetic disturbances.
Contributor:
John Herschel Project
Showing 1–6 of 6 items
Regarding magnetic disturbances.
Currents in telegraph wires.
Replies to JH's 1847-11-14, with respect to Hugh Percy and star charts.
Offers his suggestions for any trimming of the catalogue distribution list that may be necessary [see JH's 1847-11-17].
Sending account of the magnetic disturbances of 24 September 1847.
Seeks opinions on discontinuing use of 25-foot zenith tube and altering form of printed observations for transit instrument and mural circle.