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From:
Charles Babbage
To:
Sir John Herschel
Date:
[22 October 1817]
Source of text:
RS:HS 2.87
Summary:

Hopes to visit him in a few days. Regarding the calculus of derivations. Periodic functions. Is taking up mineralogy.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Wallace
Date:
22] October [1817
Source of text:
RS:HS 20.50
Summary:

Invites WW and [Thomas] Leybourn to join JH for dinner while Charles Babbage is visiting JH at Slough.

Contributor:
John Herschel Project