Search: Herschel, John in correspondent 
Jopling, Joseph in correspondent 
1860-1869::1860::10 in date 
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Herschel11086

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

Herschel11087

From:
Joseph Jopling
To:
Sir John Herschel
Date:
[25 October 1860]
Source of text:
RS:HS 10.423
Summary:

Encloses [a diagram] of the transverse section of the entrance of the Great Pyramid, with details of the travelling platform for making observations.

Contributor:
John Herschel Project
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