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Herschel7978

From:
Alexander Wight, Jr.
To:
Sir John Herschel
Date:
[28 March 1856]
Source of text:
RS:HS 18.245
Summary:

New method for constructing circular lenses up to 10-feet diameter for £50. Focusing power sufficient to melt metals. Wants to send 3-inch sample to JH.

Contributor:
John Herschel Project

Herschel1132

From:
Sir John Herschel
To:
John Wrottesley
Date:
[28 March 1856]
Source of text:
RS:HS 25.12.2
Summary:

Is able to sit up in a wheel chair only a few hours a day; JH's illness has left him out of the sphere of scientific activity so he is unable to make any useful suggestions about medals.

Contributor:
John Herschel Project
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