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Herschel, John in correspondent 
Sabine, Edward in correspondent 
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Herschel2419

From:
Sir John Herschel
To:
Edward Sabine
Date:
[22 February 1863]
Source of text:
RS:HS 15.269 (C: RS:HS 24.11)
Summary:

Returns [Warren] de La Rue's letter and discusses its contents, especially the making, mounting, and mirror for de La Rue's reflecting telescope.

Contributor:
John Herschel Project

Herschel2420

From:
Sir John Herschel
To:
Edward Sabine
Date:
[22 February 1863]
Source of text:
RS:HS 15.270 (C: RS:HS 24.12)
Summary:

Expresses interest in Swedish plan to survey Spitzbergen and to measure meridian of arc. Discusses gravitometer being developed by [Jacques] Babinet.

Contributor:
John Herschel Project

Herschel2423

From:
Sir John Herschel
To:
Edward Sabine
Date:
[25 October 1863]
Source of text:
RS:HS 24.21
Summary:

Accepts invitation to dine with ES. Working on sixth edition of Outlines Astr. Has sent argument against converting to metric system to Leeds.

Contributor:
John Herschel Project

Herschel2429

From:
Sir John Herschel
To:
Edward Sabine
Date:
[30 August 1866]
Source of text:
RS:HS 15.279 (C: RS:HS 24.163)
Summary:

Did not realize [John] Hennessey was considering constructing an achromatic telescope. Thanks ES for considering his son, Alexander, for the Melbourne post.

Contributor:
John Herschel Project

Herschel2436

From:
Sir John Herschel
To:
Edward Sabine
Date:
[11 October 1868]
Source of text:
RS:HS 15.290 (C: RS:HS 24.232)
Summary:

Discusses papers concerning light on [William] Sharpey's list. Discusses, very critically, Henry Brougham's optical researches.

Contributor:
John Herschel Project

Herschel2442

From:
Sir John Herschel
To:
Edward Sabine
Date:
[20 March 1825]
Source of text:
RS:HS 15.1 & 20.202
Summary:

Comments on ES's measurement [in his Account of Experiments to Determine the Figure of the Earth] indicating 'the increase of the fraction expressing the earth's compression.' Predicts that ES's result will cause a 'sensation,' but does not commit himself to it.

Contributor:
John Herschel Project

Herschel2479

From:
Sir John Herschel
To:
Edward Sabine
Date:
[1839].
Source of text:
RS:HS 15.333
Summary:

Discusses Harvard University offer to make magnetic measurements. Requests ES to read Admiralty extracts. Asks questions regarding JH's upcoming review [in Quarterly Review] of several works on terrestrial magnetism.

Contributor:
John Herschel Project

Herschel2480

From:
Sir John Herschel
To:
Edward Sabine
Date:
[1861-8-31 or later]
Source of text:
RS:HS 15.334
Summary:

Advises on the construction of the Melbourne reflecting telescope. Thinks [W. P.] Wilson should come to watch construction.

Contributor:
John Herschel Project

Herschel2555

From:
Sir John Herschel
To:
Edward Sabine
Date:
[3 April 1825]
Source of text:
RS:HS 15.2 (C: RS:HS 20.204)
Summary:

Responds to ES's proposal to conduct a series of meteorological observations from the peak of Teneriffe. Promises to bring it before the Board of Longitude for consideration for support.

Contributor:
John Herschel Project

Herschel2722

From:
Sir John Herschel
To:
Edward Sabine
Date:
[5 April 1825]
Source of text:
RS:HS 15.4 & 20.205
Summary:

Responds to ES's letter of 1825-4-4, stating that JH now understands that ES will proceed with the Teneriffe observations only if funds are provided. Praises Sabine's previous work.

Contributor:
John Herschel Project

Herschel2724

From:
Sir John Herschel
To:
Edward Sabine
Date:
[8 April 1825]
Source of text:
RS:HS 15.6 (C: RS:HS 20.206)
Summary:

On 1825-4-7 presented ES's proposal for experiments at Teneriffe to the Board of Longitude, which judged the experiments not sufficiently relevant to the Board's concerns. Offers to seek endorsement from the R.S.L.

Contributor:
John Herschel Project

Herschel2726

From:
Sir John Herschel
To:
Edward Sabine
Date:
[21 April 1825]
Source of text:
RS:HS 15.8 (C: RS:HS 20.208)
Summary:

Invites ES to join him and other scientists for dinner. Requests that ES prepare a detailed description and justification of his proposed Teneriffe experiments for consideration by the R.S.L. Council.

Contributor:
John Herschel Project

Herschel2727

From:
Sir John Herschel
To:
Edward Sabine
Date:
[6 May 1825]
Source of text:
RS:HS 20.210
Summary:

Read your proposal on experiments at Teneriffe to the R.S.L. Council, which declined to make 'an especial recommendation' in support of them to the government.

Contributor:
John Herschel Project

Herschel2728

From:
Sir John Herschel
To:
Edward Sabine
Date:
[20 June 1825]
Source of text:
RS:HS 15.9 (C: RS 20.215)
Summary:

Six artillery men have been placed under ES's command. Encloses letters from Charles Bonne. Asks ES to oversee the arrival of 180 rockets to be used at Wrotham and Fairlight. Proposes that ES test whether a light at Wrotham can be seen at Fairlight in which case gunpowder will be used instead of rockets. Sets date for ES to meet Bonne in Hornoy. Urges ES to record his expenses for the Board of Longitude.

Contributor:
John Herschel Project

Herschel2735

From:
Sir John Herschel
To:
Edward Sabine
Date:
[23 February 1826]
Source of text:
RS:HS 15.15b
Summary:

Denies any knowledge of a R.S.L. Council meeting. Trusts the council will make its decisions based on public duty and science, not on the fact that the decision must be defended in later discussions. Has passed [George] Fisher's letter on to members as ES requested.

Contributor:
John Herschel Project

Herschel2757

From:
Sir John Herschel
To:
Edward Sabine
Date:
[12 April 1839]
Source of text:
RS:HS 15.37 (C: RS:HS 22.9)
Summary:

Expresses great pleasure that the fixed observatories have received official approval and financial support. Approves of ES's cost estimates. Encloses copy of the B.A.A.S. memorial. Agrees to tell Humphrey Lloyd to order instruments as requested by ES.

Contributor:
John Herschel Project

Herschel2794

From:
Sir John Herschel
To:
Edward Sabine
Date:
[15 December 1839]
Source of text:
RS:HS 15.74 (C: RS:HS 22.33)
Summary:

Regrets deeply the little notice given to the observatories and to Humphrey Lloyd in the R.S.L. President's recent speech. Urges ES to comfort Lloyd. States R.S.L. 'is no longer the sole arena in which a scientific name can be acquired.'

Contributor:
John Herschel Project

Herschel2795

From:
Sir John Herschel
To:
Edward Sabine
Date:
[16 December 1839]
Source of text:
RS:HS 15.75 (C: RS:HS 22.34)
Summary:

Declines to take steps to call a special committee or council meeting of the R.S.L. regarding foreign communications of the observatories, noting his own wish to stay out of R.S.L. affairs.

Contributor:
John Herschel Project

Herschel2841

From:
Sir John Herschel
To:
Edward Sabine
Date:
[28 January 1841]
Source of text:
RS:HS 15.121 (C: RS:HS 22.78)
Summary:

Insists on inclusion of all data and graphs in the publication of the accumulated magnetic observations, made as part of 'perhaps the very greatest scientific operation ... ever ... undertaken....' Urges that funding be sought from the government.

Contributor:
John Herschel Project

Herschel2848

From:
Sir John Herschel
To:
Edward Sabine
Date:
[27 April 1841]
Source of text:
RS:HS 15.128 (C: RS:HS 22.85)
Summary:

Provides examples to justify governmental support of various magnetic and meteorological observations. States that 'Terrestrial magnetism ... of all sciences of observation holds out the greatest present prospect of decisive reduction under ... exact theory.' Mentions work by N. L. Lacaille and Thomas Maclear at the Cape.

Contributor:
John Herschel Project
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