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From:
Sir John Herschel
To:
Sir Charles Lyell
Date:
[25 April 1865]
Source of text:
APS B.D25.L.13 (C: RS:HS 24.105)
Summary:

Comments on a table of U. J. J. Leverrier on the eccentricities of the earth's orbit.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Sir Charles Lyell
Date:
[6 May 1865]
Source of text:
APS B.D25.L.14 (C: RS:HS 24.108)
Summary:

Further comments on the theory of glacier formation, urging causes beyond merely astronomical ones.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Sir Charles Lyell
Date:
[7 December 1865]
Source of text:
APS B.D25.L.15 (C: RS:HS 24.132)
Summary:

Describes exactly the route JH took to get to the point where he made his drawings of the earth pyramids at Botzen.

Contributor:
John Herschel Project