From:
Edward Sabine
To:
Sir John Herschel
Date:
[14 February 1843]
Source of text:
RS:HS 15.151
Summary:
Sent JH's letter concerning actinometers to all observatories. [Johann] Lamont must be informed of recent work. ES comparing fluctuations of direction and force at Toronto and Van Diemen's Land. Mentions [G. B.] Airy and air currents.
Contributor:
John Herschel Project