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1860-1869::1863::06::18 in date 
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Herschel5556

From:
Sir John Herschel
To:
Sir Isaac L. Bell
Date:
[18 June 1863]
Source of text:
RS:HS 4.46 & 24.17
Summary:

Thanks for the thallium. Further regarding his 'cobalt steel' and its uses. Fluorin glass.

Contributor:
John Herschel Project
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