From:
W. G. Penny
To:
Sir John Herschel
Date:
1857
Source of text:
RS:HS 14.153
Summary:
Sends a copy of his Astronomical Investigations. Claims there is an 'inequality in the motions of Mars and the Earth.'
Contributor:
John Herschel Project
Showing 1–1 of 1 item
Sends a copy of his Astronomical Investigations. Claims there is an 'inequality in the motions of Mars and the Earth.'