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Herschel2761

From:
Edward Sabine
To:
Sir John Herschel
Date:
[22 April 1839]
Source of text:
RS:HS 15.41
Summary:

Favors C. F. Gauss's theory of two magnetic poles, provided it satisfies the data. Office of the Artillery at Woolwich plans to 'furnish a set of instruments by private subscription.' Suggests a staff officer be appointed for the correspondence between observatories. Worries that the East Indies observatory will fail.

Contributor:
John Herschel Project

Herschel8819

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[22 April 1839]
Source of text:
Science Museum Talbt 1/16 (C: RS:HS 22.11)
Summary:

Comments on several approaches to fixing images on paper, especially using pure water as a fixing agent. Has developed a new sensitive paper but is keeping it secret until perfected. Is leaving for Continent on 1 May.

Contributor:
John Herschel Project

Herschel9656

From:
Thomas Galloway
To:
Sir John Herschel
Date:
[22 April 1839]
Source of text:
RS:HS 8.6
Summary:

Forwarding Thomas Maclear's paper on N. L. Lacaille's Stations for JH's Report. Would he also mark any unnecessary passages or drawings.

Contributor:
John Herschel Project
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