Search: Armellini, Titus in author 
1860-1869::1863 in date 
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From:
Titus Armellini
To:
Sir John Herschel
Date:
[29 June 1863]
Source of text:
RS:HS 1.407
Summary:

New invention for measuring barometrical variations on an increased scale.

Contributor:
John Herschel Project