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Herschel, John in addressee 
1840-1849::1840::03::05 in date 
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Herschel11109

From:
Christopher Johnson
To:
Sir John Herschel
Date:
[5 March 1840]
Source of text:
RS:HS 10.446
Summary:

Has just seen JH's communication in the P.M. regarding an improvement to a lamp. Points out that the late Charles Seward obtained a patent for this improvement some thirty years ago.

Contributor:
John Herschel Project

Herschel4402

From:
Henry Anthony Jeffreys
To:
Sir John Herschel
Date:
[1840 or later]-3-5
Source of text:
Harvard: Houghton AAH 67m-67 (63)
Summary:

Asks JH's opinion on a candidate for a committee position.

Contributor:
John Herschel Project
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