From:
Joseph Jopling
To:
Sir John Herschel
Date:
[1 October 1860]
Source of text:
RS:HS 10.422
Summary:
Outlining a method for making star maps with a pyramid.
Contributor:
John Herschel Project
Showing 1–2 of 2 items
Outlining a method for making star maps with a pyramid.
Encloses [a diagram] of the transverse section of the entrance of the Great Pyramid, with details of the travelling platform for making observations.