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1840-1849::1842::12::25 in date 
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Herschel11641

From:
John McClelland
To:
Sir John Herschel
Date:
[25 December 1842]
Source of text:
RS:HS 12.6
Summary:

Sending, care of Dr. Grant, the first part of a series of experiments on the magnetic influence of light, which appeared recently in the Calcutta Journal. Has been unable to obtain a characteristic specimen of Kankar in Bengal. Dr. Hugh Falconer is an expert on the Kankar in Bengal and he will try to obtain information from Falconer.

Contributor:
John Herschel Project

Herschel12723

From:
Sir John Herschel
To:
George Dollond
Date:
[25 December 1842]
Source of text:
TxU:H/L-0138; Reel 1054
Summary:

Regrets that GD cannot build JH's entire actinoscope. If GD can make at least mechanical components, JH will supply optics and clockwork. Can GD complete these [by end of March]? Funds are limited; please estimate cost.

Contributor:
John Herschel Project
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