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Forbes, James David in correspondent 
Herschel, John in author 
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Herschel3243

From:
Sir John Herschel
To:
James David Forbes
Date:
[2 June 1842]
Source of text:
St. Andrews 55 (C: RS:HS 22.122)
Summary:

Compares actinometric measurements of radiation. Explains interest in total eclipse relative to actinometry. Discusses the possibility of making actinometric measurements by photographic means.

Contributor:
John Herschel Project

Herschel12742

From:
Sir John Herschel
To:
James David Forbes
Date:
[15 November 1842]
Source of text:
RS:HS 25.6.15 (C: TxU:H/L-0159; Reel 1054)
Summary:

Received JF's paper on 'thermographic process.' Believes that thermic rays were responsible for experimental results of JF, J. W. Draper, and Ludwig Moser. JH's theory of and experiments with thermic rays, which are different from 'calorific' and visible rays, in solar spectrum.

Contributor:
John Herschel Project

Herschel9567

From:
Sir John Herschel
To:
James David Forbes
Date:
[19 January 1843]
Source of text:
RS:HS 7.304 & 22.146
Summary:

Protesting about the refusal of the Royal Society of Edinburgh to publish Thomas Brisbane's magnetic observations; hopes it will be reconsidered. Thinks JF's theory on glaciers has good points, but comments on some of its shortcomings.

Contributor:
John Herschel Project

Herschel3360

From:
Sir John Herschel
To:
James David Forbes
Date:
[7 December 1844]
Source of text:
St. Andrews 77
Summary:

Requests papers relative to a preface to the catalogue of [N. L.] Lacaille's stars, so that the catalogue may be printed.

Contributor:
John Herschel Project

Herschel3377

From:
Sir John Herschel
To:
James David Forbes
Date:
[11 January 1845]
Source of text:
St. Andrews LB III, 602-3 (C: RS:HS 7.306)
Summary:

Believes JH expressed support for pension for surviving child of Thomas Henderson. Comments on this, stating his own view that she is already well provided for.

Contributor:
John Herschel Project

Herschel3539

From:
Sir John Herschel
To:
James David Forbes
Date:
1845-1[?]-22
Source of text:
St. Andrews 7
Summary:

Requests information about actinometers in JF's possession, and provides further information regarding their use.

Contributor:
John Herschel Project

Herschel3597

From:
Sir John Herschel
To:
James David Forbes
Date:
[10 June 1845]
Source of text:
St. Andrews 73 (C: RS:HS 22.241)
Summary:

Hopes to add JF's name to B.A.A.S. Meteorological Committee, and to see JF at Cambridge meeting of the committee.

Contributor:
John Herschel Project

Herschel3561

From:
Sir John Herschel
To:
James David Forbes
Date:
[11 August 1845]
Source of text:
St. Andrews 111 (C: RS:HS 22.246)
Summary:

Thanks JF for second edition of work on the Alps. Praises first edition.

Contributor:
John Herschel Project

Herschel3541

From:
Sir John Herschel
To:
James David Forbes
Date:
[1 March 1847]
Source of text:
St. Andrews 10a (C: RS:HS 22.304)
Summary:

Believes all actinometric measurements made are useless because they did not take into account the rate of expansion of the liquid, which is not constant.

Contributor:
John Herschel Project

Herschel9569

From:
Sir John Herschel
To:
James David Forbes
Date:
[22 June 1847]
Source of text:
RS:HS 22.320
Summary:

Asks for details of several actinometers.

Contributor:
John Herschel Project

Herschel3423

From:
Sir John Herschel
To:
James David Forbes
Date:
[21 November 1848]
Source of text:
St. Andrews 87
Summary:

Thanks for medal of the Royal Society of Edinburgh.

Contributor:
John Herschel Project

Herschel3424

From:
Sir John Herschel
To:
James David Forbes
Date:
[1 June 1849]
Source of text:
St. Andrews 48
Summary:

Comments on JH's Treatise Astr. in the Cabinet Cyclopaedia, mentioning its continued publication, misstatements he wishes to correct, and his addition of A. de Gasparis's newly-discovered planet [Hygeia].

Contributor:
John Herschel Project

Herschel9572

From:
Sir John Herschel
To:
James David Forbes
Date:
[26] November 1849
Source of text:
RS:HS 7.312 & 23.75
Summary:

Agrees that it would be desirable to make further observations at the Cape, but foresees difficulties, especially liaison with the Astronomer Royal at the Cape.

Contributor:
John Herschel Project

Herschel8594

From:
Sir John Herschel
To:
James David Forbes
Date:
[27 November 1849]
Source of text:
Edinburgh Royal Society
Summary:

[Responding to JF's 1849-11-23], JH cautiously discusses various considerations bearing on the idea of sending an astronomer and a large reflecting telescope to the Cape.

Contributor:
John Herschel Project

RS-MM-001101

From:
John Frederick William Herschel
To:
James David Forbes
Date:
11 June 1850
Source of text:
MM/16/138, Royal Society
Summary:

No summary available.

Contributor:
Royal Society

Herschel3523

From:
Sir John Herschel
To:
James David Forbes
Date:
[27 July 1850]
Source of text:
St. Andrews 56 & C: TxU:H/L-0146; Reel 1054 inc
Summary:

Calls JF's attention to an article in which an answer is attempted to JF's objection to 'the argument from probability of a physical connection between individuals of a double star.'

Contributor:
John Herschel Project

Herschel3194

From:
Sir John Herschel
To:
James David Forbes
Date:
[31 October 1850]
Source of text:
St. Andrews 93 A/a (C: RS:HS 23.93)
Summary:

Describes travels through a volcanic district in France, highlighting beautiful scenery, various rock and lava formations, analyzing their causes, and comparing JH's observations with JF's.

Contributor:
John Herschel Project

Herschel3280

From:
Sir John Herschel
To:
James David Forbes
Date:
1851-10
Source of text:
St. Andrews 87 (C: RS:HS 23.108)
Summary:

Asks JF to deliver papers about professorships and a council position at a new university at Sydney to interested, qualified parties.

Contributor:
John Herschel Project

Herschel3151

From:
Sir John Herschel
To:
James David Forbes
Date:
1856[?]-12-11
Source of text:
St. Andrews 109
Summary:

Letter of introduction for the Drs. Hermann and Robert Schlagentweit, whose scientific interests parallel JF's.

Contributor:
John Herschel Project

Herschel3225

From:
Sir John Herschel
To:
James David Forbes
Date:
[14 January 1857]
Source of text:
St. Andrews 55a (C: RS:HS 23.187)
Summary:

Thanks JF for his dissertation on the Progress of Mathematical and Physical Science. Discusses health of JF and JH. Suggests that some actinometric measurements are not as seriously flawed as at first thought [see JH's 1847-3-1].

Contributor:
John Herschel Project
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