Search: Herschel, John in correspondent 
1820-1829::1825::12 in date 
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Herschel7820

From:
William Wallace
To:
Sir John Herschel
Date:
[1 December 1825]
Source of text:
RS:HS 18.25
Summary:

Received volume on double stars by JH and James South. Followed JH's advice, ordered instruments from Germany. Asked Josef Fraunhofer to design transit instrument to fit pillars designed by Edward Troughton. Quotes Fraunhofer's response [in French] that pillars should be moved to accommodate his instrument. David Brewster anxious for JH to answer last letter.

Contributor:
John Herschel Project

Herschel5787

From:
David Brewster
To:
Sir John Herschel
Date:
[2 December 1825]
Source of text:
RS:HS 4.259
Summary:

Regarding corrections requested by JH in a printed article. Ill health and overwork applies to him also. Pleased to hear of the work of the Optical Glass Committee. Comments on this.

Contributor:
John Herschel Project

Herschel12549

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[3 December 1825]
Source of text:
RS:HS 13.419
Summary:

Is pleased that GP's memoir has finally arrived in London [see GP's 1825-11-19]. Indicates arrangements for paying for copies. Comments on GP's astronomical observations of the last several years, and on his method of making reductions.

Contributor:
John Herschel Project

Herschel8071

From:
Thomas Young
To:
Sir John Herschel
Date:
[11 December 1825]
Source of text:
RS:HS 18.337
Summary:

Suggests change in JH's table of refractions. Possible error in John Pond's reductions [illustration].

Contributor:
John Herschel Project

Herschel7821

From:
Sir John Herschel
To:
William Wallace
Date:
[12 December 1825]
Source of text:
RS:HS 20.226
Summary:

Edinburgh Institution's decision to order instruments from Josef Fraunhofer should send message to 'dilatory and ... abominably expensive' English artists. Axis of Fraunhofer's 8-foot transit instrument is too long. Compares those of Cambridge, Greenwich, Paris, and James South. [Robert] Woodhouse's paper in 1825 R.S.P.T. eliminated JH's hope that Cambridge would devote time to general catalogue.

Contributor:
John Herschel Project

Herschel14830

From:
Sir John Herschel
To:
Unidentified
Date:
[1825-12-15 or later
Source of text:
Adler Planetarium
Summary:

Referring to the R.S.L. Royal Medals commissioned on 15 Dec. 1825 by King George IV, JH confirms that Sir Thomas Lawrence has agreed to design the medals.

Contributor:
John Herschel Project

Herschel10251

From:
Frederick Griesbach
To:
Sir John Herschel
Date:
[19 December 1825]
Source of text:
RS:HS 9.137
Summary:

Is grateful for the present. Did not request the money as a gift.

Contributor:
John Herschel Project

Herschel4048

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[30 December 1825]
Source of text:
TxU:H/L-0570.3; Reel 1058
Summary:

Recovering from a prolonged illness. Discusses parallax. JH reports that he now is very skilled at sweeping with the 20-ft reflecting telescope.

Contributor:
John Herschel Project

Herschel10783

From:
Sir John Herschel
To:
Thomas John Hussey
Date:
[31 December 1825]
Source of text:
RS:HS 10.137 & 20.227
Summary:

Sending by the bearer mirror No. 3 of which he spoke. Will exchange it for Troughton's if TH can make use of JH's. Do not attempt to clean Edward Troughton's mirror with acid. Hopes he does not feel obliged to carry out any particular series of observations.

Contributor:
John Herschel Project
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