From:
George Biddell Airy
To:
Sir John Herschel
Date:
[6 May 1845]
Source of text:
TxU:H/M-0631.2
Summary:
Describes testing William Simms's object glass and then gives details of the equatorial mounting GA used; offers to send carpenter to JH to construct mounting so JH can test object glass [diagram].
Contributor:
John Herschel Project