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1840-1849 in date 
Herschel, John in author 
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From:
Sir John Herschel
To:
Unidentified
Date:
[15 June 1840]
Source of text:
BostonPubLib Ms.Eng. 397
Summary:

Has no objection to the recipient's republication of the 'Examples of the Differ. & Integl Calculus by Mr. Peacock,' to which JH contributed.

Contributor:
John Herschel Project
From:
John Frederick William Herschel
To:
John Herschel
Date:
18 June 1840
Source of text:
MM/16/140, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
John Frederick William Herschel
To:
Edward Sabine
Date:
18 June 1840
Source of text:
MM/16/139, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[19 June 1840]
Source of text:
Science Museum Talbt 1/26
Summary:

Praises various photographs by WT and notes changes in some. Recounts optical experiments, recent and planned, by JH on rock-salt.

Contributor:
John Herschel Project
From:
John Frederick William Herschel
To:
John Herschel
Date:
21 June 1840
Source of text:
MM/16/141, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
Sir John Herschel
To:
Humphrey Lloyd
Date:
1840-6-[25 or earlie
Source of text:
RS:HS 25.14.19
Summary:

Sends to HL a sheet of curves laid down by [Charles] Riddell, comparing Brussels declination observations with those made in Toronto. JH frequently refers to HL's work on the subject of terrestrial magnetism.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[26 June 1840]
Source of text:
RS:HS 22.55
Summary:

Thanks AD for a correction in one of JH's writings; tries to explain the partial echo that occurs when blowing across the end of an open pipe.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John William Lubbock
Date:
26 June [1840?]
Source of text:
TxU:H/L-0233; Reel 1054
Summary:

Believes that R.S.L.'s request for £3000 grant to establish permanent magnetic and meteorological observatory is too hasty. Urges caution. Points out potential problems.

Contributor:
John Herschel Project
From:
John Frederick William Herschel
To:
John Herschel
Date:
27 June 1840
Source of text:
MM/16/142, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
Sir John Herschel
To:
James O. Halliwell
Date:
[28 June 1840]
Source of text:
RS:HS 10.147 & 22.56
Summary:

Feels unable to become a member of the new society proposed by Halliwell, but wishes it well.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Samuel Hunter Christie
Date:
[29 June 1840]
Source of text:
TxU:H/L-0126; Reel 1054
Summary:

Recommends printing all three papers sent to JH—G. B. Airy's on spectral bands, [Robert] Hunt's on influence of iodine on photographic papers, and that by Lord Oxmantown [William Parsons] on large reflecting telescopes.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John William Lubbock
Date:
[30 June 1840]
Source of text:
RS LUB.H.357 (ACCS: RS:HS 25.6.4)
Summary:

In light of minutes of R.S.L. Council meeting, outlines vision of permanent national physical observatory and, more importantly, an experimental institute or college. Hopes Edward Sabine will be interested.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Spencer J. A. Compton
Date:
1840-7
Source of text:
RS:HS 22.74
Summary:

Organizational matters relating to sending two vessels on an Antarctic expedition.

Contributor:
John Herschel Project
From:
John Frederick William Herschel
To:
John Herschel
Date:
2 July 1840
Source of text:
MM/16/143, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
John Frederick William Herschel
To:
unknown
Date:
3 July 1840
Source of text:
MM/11/147, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
Sir John Herschel
To:
John William Lubbock
Date:
[3 July 1840]
Source of text:
RS MM.11.147 (ACCS: RS:HS 25.6.5)
Summary:

Is displeased by R.S.L. Council's seemingly rash resolution with regard to idea of permanent magnetic observatory.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[6 July 1840]
Source of text:
RGO 6.675.239
Summary:

Comments on a proposed request for a government grant to establish a magnetic and meteorological institute.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[6 July 1840]
Source of text:
TxU:H/L-0011; Reel 1054
Summary:

GA's correspondence with [R.S.L. president] Lord Northampton [S. J. A. Compton] will be read before Physical Committee. JH favors establishing national physical observatory and experimental institute, but wishes plan had been discussed more fully. Proposes sites, procedures, and instruments for magnetic and meteorological observations in Britain. Ideas for experimental institute.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[Spencer J. A.] Compton
Date:
[8 July 1840]
Source of text:
RS:HS 25.6.6
Summary:

The Physical [?] Committee is meeting the next day to deal with the question of establishing a magnetic and meteorological observatory. JH [Chair of the Physical Committee?] cannot attend the meeting and sends his supportive, but cautioning, comments.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Francis Baily
Date:
[8 July 1840]
Source of text:
TxU:H/L-0056; Reel 1054
Summary:

Dissatisfied with R.S.L. procedures for establishing magnetic and meteorological observatory. Called meeting of Physical Committee tomorrow and invited G. B. Airy to attend. Busy reducing JH's observations from Cape of Good Hope.

Contributor:
John Herschel Project