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Hansen, Wilhelm in correspondent 
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From:
Wilhelm Hansen
To:
Sir John Herschel
Date:
[15 May 1854]
Source of text:
RS:HS 10.153
Summary:

Has been commissioned by Guillaume Weber to present a paper about an instrument for measuring the earth's magnetism, to JH. Would like to present it personally; when can he call?

Contributor:
John Herschel Project
Collection
Document type
Transcription available