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Jackson, Julian in correspondent 
John Herschel in collection 
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From:
Sir John Herschel
To:
Julian Jackson
Date:
[5 February 1841]
Source of text:
Royal Geographical Society
Summary:

A portable magnetometer purchased by the B.A.A.S. is now available as a loan for use in magnetic survey of British Guyana.

Contributor:
John Herschel Project
Document type
Transcription available