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From:
Alfred Smee
To:
Sir John Herschel
Date:
[17 November 1842]
Source of text:
RS:HS 16.157
Summary:

A note accompanying a sample of high quality ferrocyanide of [iron?].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[17 November 1842]
Source of text:
RS:HS 22.142
Summary:

Thanks AD for the corrections to JH's writing on astronomy; congratulates AD on his book on differential calculus.

Contributor:
John Herschel Project