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1840-1849::1842::06::02 in date 
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From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[2 June 1842]
Source of text:
RS:HS 17.312
Summary:

Carl Steinheil has proposed making telescope mirrors by plating silver on glass. Is writing to JH to tell him that somewhat earlier he had included this process in one of his patents.

Contributor:
John Herschel Project
From:
Richard Sheepshanks
To:
Sir John Herschel
Date:
[2 June 1842]
Source of text:
RS:HS 16.18
Summary:

Gives his opinion of [George] Merz, stating that he has not done anything to 'distinguish himself from a mere practical follower of [Josef] Fraunhofer.' Requests that JH send encouragement to James Challis.

Contributor:
John Herschel Project