Search: Herschel, John in correspondent 
Johnson, Manuel John in correspondent 
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letter in document-type 
1840-1849::1848 in date 
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From:
Manuel John Johnson
To:
Sir John Herschel
Date:
[23 July 1848]
Source of text:
RS:HS 10.335
Summary:

Encloses a letter from W. J. Burchell, the African traveller, showing the variability of Argus. Has added a 10 foot telescope to the instruments at the Observatory.

Contributor:
John Herschel Project