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Herschel, John in addressee 
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1840-1849::1848::02::04 in date 
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Herschel6973

From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[4 February 1848]
Source of text:
RS:HS 6.241
Summary:

Sending something from Airy relating to the testimonial. Anything he does not use can be returned to Somerset House for AD.

Contributor:
John Herschel Project

Herschel6694

From:
Charles Robert Darwin
To:
Sir John Herschel
Date:
[4 February 1848]
Source of text:
RS:HS 6.11
Summary:

As JH has accepted the superintendency of the Admiralty Manual he will try to undertake the geological part, but it will take time as he is busy on another project.

Contributor:
John Herschel Project

DCP-LETT-1151

From:
Charles Robert Darwin
To:
John Frederick William Herschel, 1st baronet
Date:
4 Feb 1848
Source of text:
The Royal Society (HS6: 11)
Summary:

Undertakes to write geological part of Admiralty Instructions [A manual of scientific enquiry (1849), Collected papers 1: 227–50]. Has doubts as to his success.

Contributor:
Darwin Correspondence Project

Herschel1371

From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[4 February 1848]
Source of text:
RS:HS 17.320
Summary:

Has performed experiments measuring the deviation of spectra through an obliquely placed diffraction grating. Believes they strongly support the wave theory of light.

Contributor:
John Herschel Project
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