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Newbold, Thomas John in correspondent 
Herschel, John in addressee 
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1840-1849::1843 in date 
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From:
Thomas John Newbold
To:
Sir John Herschel
Date:
[11 December 1843]
Source of text:
RS:HS 13.122
Summary:

Gives his own ideas concerning the origin of diamonds and would like JH's comments. Would also like JH's views regarding the phosphorescent light that plays at night over the magnesite excavations.

Contributor:
John Herschel Project