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Faraday4602

From:
Jane Barnard
To:
John Tyndall
Date:
26 August 1867
Source of text:
RI MS JT/1/B/30
Summary:

No summary available.

Contributor:
Faraday Project

Herschel3412

From:
Sir John Herschel
To:
John Tyndall
Date:
[3 November 1867]
Source of text:
RS:HS 24.210
Summary:

Believes Michael Faraday's boro-silicate of lead has not been used for telescopes, but JH and others have tried using it for other optical purposes. Describes method for producing veinless flint glass.

Contributor:
John Herschel Project
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