From:
George Thurnell
To:
Sir John Herschel
Date:
[23 February 1866]
Source of text:
RS:HS 17.437
Summary:
Praises JH's essay 'The Yard, the Pendulum, and the Metre.' Believes C. P. Smyth's theories concerning the Great Pyramid being a standard of measurement.
Contributor:
John Herschel Project