From:
Edward Sabine
To:
Sir John Herschel
Date:
[12 December 1844]
Source of text:
TxU:H/M-0520.16; Reel 1093
Summary:
Sent out copies of JH's remarks on Toronto actinometer. Expects that observations recommended by JH will be made next summer. Replacement for J. H. Kay's broken actinometer will arrive [in Tasmania] next June. Possible remedies to declination readings.
Contributor:
John Herschel Project