From:
Joseph Jopling
To:
Sir John Herschel
Date:
[18 September 1860]
Source of text:
RS:HS 10.421
Summary:
Thanks for his letter. Any astronomical observations can be recorded on a plane or spherical surface. 108 equal cubes will exactly fill the coffer in the king's chamber of the Great Pyramid.
Contributor:
John Herschel Project