From:
George Biddell Airy
To:
Sir John Herschel
Date:
[30 November 1847]
Source of text:
TxU:H/L-0019; Reel 1054
Summary:
Seeks opinions on discontinuing use of 25-foot zenith tube and altering form of printed observations for transit instrument and mural circle.
Contributor:
John Herschel Project