From:
John Henry Dallmeyer
To:
Sir John Herschel
Date:
[13 August 1861]
Source of text:
RS:HS 6.1
Summary:
Thanks for his note on the performance of the telescope. Gives suggested reasons for faults. Sends a print of a photograph of a map recently taken by one of his achromatic lenses.
Contributor:
John Herschel Project