Search: John Herschel Project in contributor 
1820-1829::1826::07::01 in date 
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From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
1826-7
Source of text:
RS:HS 17.261
Summary:

Talks about Josef Fraunhofer's failing health and his making of flint glass.

Contributor:
John Herschel Project
From:
William Whewell
To:
Sir John Herschel
Date:
[1 July 1826]
Source of text:
RS:HS 18.167
Summary:

Reports that an accident destroyed one of the pendulums used by G. B. Airy and WW in their Dolcoath experiments. Obtained some results and believes in the general soundness of the method employed.

Contributor:
John Herschel Project