Search: Herschel, John in author 
1850-1859::1857::04 in date 
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Herschel7062

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[1 April 1857]
Source of text:
RS:HS 23.192
Summary:

Reading proofs of JH's Essays Q. E. R.; working on an article on meteorology.

Contributor:
John Herschel Project

Herschel2372

From:
Sir John Herschel
To:
Edward Sabine
Date:
[3 April 1857]
Source of text:
RS:HS 15.241 (C: RS:HS 23.193)
Summary:

Thanks ES for his paper. Sun spot activity should increase in 1857. Discusses his own earlier ideas concerning relationship between sun spots and Aurora Borealis.

Contributor:
John Herschel Project

Herschel10926

From:
Sir John Herschel
To:
Henry James
Date:
[3 April 1857]
Source of text:
RS:HS 10.272 & 23.194
Summary:

Thanks for his letter and projection. Compares it with one of his own devising and encloses a chart of the isothermal lines of the Northern hemisphere. Has used a different system for his Cape Results.

Contributor:
John Herschel Project

Herschel8920

From:
Sir John Herschel
To:
the London Times
Date:
[3 April 1857]
Source of text:
London Times (April 6, 1857), p. 12, col. 4.
Summary:

Urges that observations be made of sunspots. Notes that sunspots are much more evident now than in 1856. [Written by JH under the pseudonym 'Helioscopus']

Contributor:
John Herschel Project

Herschel2375

From:
Sir John Herschel
To:
Edward Sabine
Date:
[8 April 1857]
Source of text:
RS:HS 23.195
Summary:

Discusses advantages of different magnetic charts. Grateful for [P.] Plantamour's observations. Satisfied with [J. R.] Wolf's period of 11.11 years for solar spots.

Contributor:
John Herschel Project

Herschel9191

From:
Sir John Herschel
To:
William Whewell
Date:
[12 April 1857]
Source of text:
TC, Camb. Add. Ms.a.20792 (C: RS:HS 23.196)
Summary:

Looking forward to a visit from WW. Glad to hear that WW is editing Richard Jones's unpublished works. Sad to hear that George Peacock is seriously ill. Comments negatively on a book by Herbert Spencer.

Contributor:
John Herschel Project

Herschel4845

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[16 April 1857]
Source of text:
RS:HS 23.197
Summary:

Suggests ways of eliminating transmission of vibration to a piece of sensitive equipment.

Contributor:
John Herschel Project

Herschel8636

From:
Sir John Herschel
To:
F[rederick] J[ames] Furnivall
Date:
[24 April 1857]
Source of text:
Huntington Library
Summary:

FF having suggested some time ago the publication of a collection of JH's essay, JH now offers to send FF JH's Essays Q.E.R.

Contributor:
John Herschel Project
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