From:
John Henry Dallmeyer
To:
Sir John Herschel
Date:
[28 November 1859]
Source of text:
Harvard: Houghton AAH 67m-67 (48)
Summary:
Answers JH's inquiry concerning JD's telescope manufacturing process.
Contributor:
John Herschel Project
Answers JH's inquiry concerning JD's telescope manufacturing process.
Confirms measurements of a transit circle.