Search: Herschel, John in correspondent 
Plana, Giovanni Antonio in correspondent 
1820-1829::1825 in date 
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Herschel12543

From:
Sir John Herschel
To:
Giovanni Antonio Plana
Date:
[14 January 1825]
Source of text:
RS:HS 13.413 (C (inc): RS:HS 20.195)
Summary:

Apologizes for delay in writing. Describes JH's travels across Europe back to England. Is sending GP copies of JH's papers in physics, mathematics, and astronomy, especially double stars. Describes a new instrument, a floating collimator, described by Henry Kater at the R.S.L. [Rough notes for a later letter on the back of part of this one.]

Contributor:
John Herschel Project

Herschel12544

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[24 March 1825]
Source of text:
RS:HS 13.414
Summary:

Is helping another scientist bring to publication a work on triangulation in the Alps. Comments on JH's idea of suspending an extremely long plumb bob at a particular precipice in the Alps [Foucault pendulum?]. GP does not believe the results would warrant the expense. Comments on the floating collimator [see JH's 1825-1-14], noting that he does not find it very helpful.

Contributor:
John Herschel Project

Herschel12545

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[27 May 1825]
Source of text:
RS:HS 13.415
Summary:

Is preparing a paper on planetary perturbations, which GP would like to send to the Astronomical Society for publication. Comments on JH's ideas on the subject of perturbations. Would the paper being in French be a problem? Comments on Henry Kater's method for finding the zero point in his meridian circle.

Contributor:
John Herschel Project

Herschel12542

From:
Sir John Herschel
To:
Giovanni Antonio Plana
Date:
[1 July 1825]
Source of text:
RS:HS 13.413
Summary:

Mostly involves arrangements about exchanges of papers and printing some of GP's in the Astronomical Society Memoirs.

Contributor:
John Herschel Project

Herschel12546

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[28 July 1825]
Source of text:
RS:HS 13.416
Summary:

Pleased that Astronomical Society will publish GP's memoir (in French) [see GP's 1825-5-27]. Adds some comments for clarification on points in paper and makes arrangements for copies of the paper.

Contributor:
John Herschel Project

Herschel12547

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[24 October 1825]
Source of text:
RS:HS 13.417
Summary:

Inquires about the arrival of the memoir sent by GP to JH [see GP's 1825-7-28].

Contributor:
John Herschel Project

Herschel12548

From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[19 November 1825]
Source of text:
RS:HS 13.418
Summary:

Is very concerned because JH's recent letter did not comment on the arrival of GP's memoir [see GP's 1825-10-24]. Comments on printing and arrangements for copies.

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
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