Search: Herschel, John in author 
1840-1849::1842 in date 
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Herschel3995

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[9 August 1842]
Source of text:
TxU:H/L-0587.12.b; Reel 1058
Summary:

Describes the total solar eclipse seen by Francis Baily at Pavia and George Airy at Turin. They were thrilled to witness three purple flames from the blocked sun emerge around the edge of the moon. Thirty more Cape Town sweeps remain to be reduced.

Contributor:
John Herschel Project

Herschel3996

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[18 September 1842]
Source of text:
TxU:H/L-0587.14; Reel 1058
Summary:

Reports the birth of JH's ninth child, Julia.

Contributor:
John Herschel Project

Herschel4014

From:
Sir John Herschel
To:
Robert Hunt
Date:
12?] December [1842
Source of text:
George Eastman House, 6.17
Summary:

Read John William Draper's papers; although he believes that Draper's instruments are inconsistent, JH feels that they are still important because they are measurable. Decries [L. F.] Moser's skepticism of photography's value, calling it a 'blindfolding to some of the most interesting physical relations that have ever been discovered.'

Contributor:
John Herschel Project

Herschel4015

From:
Sir John Herschel
To:
Robert Hunt
Date:
[2 June 1842]
Source of text:
George Eastman House, 9.17 (C: RS:HS 22.121)
Summary:

Sorry to hear RH has been ill; JH sends some photographic examples.

Contributor:
John Herschel Project

Herschel4025

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7 June 1842]
Source of text:
TxU:H/L-0587.9; Reel 1058
Summary:

Enjoyed CH's last letter.

Contributor:
John Herschel Project

Herschel4208

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[20 January 1842]
Source of text:
Cape Archives/Maclear Papers File 100
Summary:

Congratulates TM on work at Zwartland. Fears Cape Results will not be ready within the year.

Contributor:
John Herschel Project

Herschel4405

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[3 April 1842]
Source of text:
RS:HS 22.116
Summary:

Plans to calculate Gamma Virginis orbit. Received WS paper on astronomical observations. Suggests WS look for a house in Kent after learning plans to move near London.

Contributor:
John Herschel Project

Herschel4498

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[26 May 1842]
Source of text:
RS:HS 22.118
Summary:

Thanks WS for C. P. Smyth drawings of Cape monument and Gamma Virginis observations. Notes J. H. Mädler's work on double stars and the doubt that they obey the inverse square law. Discusses use of photography in astronomy.

Contributor:
John Herschel Project

Herschel467

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[20 September 1842]
Source of text:
RGO 6.427.69
Summary:

Needs some clarification of GA's letter [see GA's 1842-9-16] before JH is ready to reply about the calculating engine.

Contributor:
John Herschel Project

Herschel468

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[27 February 1842]
Source of text:
RGO 6.427.74
Summary:

Thanks GA for exercising GA's usual discretion in the matter of the funding of Charles Babbage's calculating machine [see GA's 1842-9-26].

Contributor:
John Herschel Project

Herschel4711

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[21 January 1842]
Source of text:
RS:HS 1.100 & 22.110
Summary:

Concerning Airy's papers recently submitted [see GA's 1842-1-5]. Hopes he will continue to send a report of his experiments and observations.

Contributor:
John Herschel Project

Herschel4720

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[21 September 1842]
Source of text:
RS:HS 1.110 & 22.135
Summary:

Reply to GA's letter on Charles Babbage's calculating machine.

Contributor:
John Herschel Project

Herschel4986

From:
Sir John Herschel
To:
F. W. A. Argelander
Date:
[20 July 1842]
Source of text:
RS:HS 22.130
Summary:

Letter of introduction for some friends of JH, to FA in Bonn.

Contributor:
John Herschel Project

Herschel4989

From:
Sir John Herschel
To:
F. W. A. Argelander
Date:
[1 November 1842]
Source of text:
RS:HS 1.371 & 22.139
Summary:

Has passed on the papers sent by FA. Tables of chief stars. Observations on FA's letter of 28 October 1842 [see FA's 1842-10-28]. Sends observations of Orionis.

Contributor:
John Herschel Project

Herschel537

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[23 September 1842]
Source of text:
RGO 6.340.343
Summary:

Gives GA some accounting of standard weights in Britain, and feels that it would be worth acquiring Robinson estate weight [see GA's 1842-9-22].

Contributor:
John Herschel Project

Herschel584

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1842]
Source of text:
RGO 6.706.250
Summary:

A letter of introduction, asking GA to show the observatory to a Mr. Knipping from Hanover, a relative of JH's aunt Caroline.

Contributor:
John Herschel Project

Herschel6097

From:
Sir John Herschel
To:
Francis Baily
Date:
[21 January 1842]
Source of text:
RS:HS 3.224 (C: RS:HS 25.8.45)
Summary:

Regrets that he knows nothing about J. J. Littrow. A new astronomical instrument. Weather has been most unsuitable for observations.

Contributor:
John Herschel Project

Herschel6100

From:
Sir John Herschel
To:
Francis Baily
Date:
[27 August 1842]
Source of text:
RS:HS 3.227 (C: RS:HS 25.6.10 & 25.8.46)
Summary:

Thanks for the information on the eclipse. Comments on this. Events at the B.A.A.S. meeting. News of Wilhelm Struve's activities.

Contributor:
John Herschel Project

Herschel6102

From:
Sir John Herschel
To:
Francis Baily
Date:
[1 September 1842]
Source of text:
RS:HS 3.229 (C: RS:HS 25.8.47)
Summary:

Has sent the papers on the eclipse to G. B. Airy.

Contributor:
John Herschel Project

Herschel6105

From:
Sir John Herschel
To:
Francis Baily
Date:
[10 November 1842]
Source of text:
RS:HS 3.232 (C: RS:HS 25.8.48)
Summary:

Has written to G. B. Airy. Regarding the various reports of the recent eclipse.

Contributor:
John Herschel Project
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