From:
George Biddell Airy
To:
Sir John Herschel
Date:
[7 March 1849]
Source of text:
RS:HS 1.215 (C: RGO 6.160.77)
Summary:
Regarding the 'chilled' casting of a telescope.
Contributor:
John Herschel Project
Regarding the 'chilled' casting of a telescope.
On return of a paper, and approval of AD's method of resolving fractions.