Search: Herschel, John in author 
1830-1839::1839 in date 
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Showing 41–60 of 148 items

Herschel14147

From:
Sir John Herschel
To:
Gilbert Elliot, Second Earl of Minto
Date:
[24 November 1839]
Source of text:
TxU:H/M-0373.2; Reel 1087
Summary:

Suggestions by Alexander von Humboldt will be added to R.S.L. report regarding J. C. Ross's expedition. Send copy of Humboldt's letter so that it too may be included.

Contributor:
John Herschel Project

Herschel1476

From:
Sir John Herschel
To:
[William Henry] Harvey
Date:
[6 April 1839]
Source of text:
WT 69294
Summary:

Thanks WH for the bulbs, seeds, and a book, which he sent from South Africa. JH describes how well the tubers that JH brought back from South Africa are doing. JH complains about the weather in England. Sends WH a specimen of a plant 'photograph' made with W. H. F. Talbot's newly devised system.

Contributor:
John Herschel Project

Herschel14846

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[18 March 1839]
Source of text:
NMPFT 1937-4840
Summary:

Thanks for specimen of light sensitive paper. Provides hint on the chemical process that Louis Daguerre may have used in his photographic work. Sends specimens of JH's own work.

Contributor:
John Herschel Project

Herschel14848

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[27 March 1839]
Source of text:
NMPFT 1937-4842
Summary:

Describes method of varying the size of photographic images. Praises Talbot's light sensitive paper and suggests improvements regarding it. Complains about persons too ready to seek a patent.

Contributor:
John Herschel Project

Herschel1492

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[28 April 1839]
Source of text:
APS B.Sm98.17 (C: RS:HS 22.13)
Summary:

Does not have operational telescope. Suggests WS set 1840 as epoch.

Contributor:
John Herschel Project

Herschel1525

From:
Sir John Herschel
To:
John Stewart
Date:
[14 July 1839]
Source of text:
APS B.H435p.10
Summary:

Is willing to be a witness to some battery experiments by J. P. Gassiot, but JH is busy, mostly with house hunting, and so may not be available.

Contributor:
John Herschel Project

Herschel1526

From:
Sir John Herschel
To:
Francis Beaufort
Date:
[1 August 1839]
Source of text:
APS B.H435p.11
Summary:

Agrees with FB and others about the need for adequately trained men to be sent out to remeasure N. L. Lacaille's arc.

Contributor:
John Herschel Project

Herschel1883

From:
Sir John Herschel
To:
D. François J. Arago
Date:
[5 July 1839]
Source of text:
WT 67390.1
Summary:

Is sending FA information about magnetic proceedings.

Contributor:
John Herschel Project

Herschel1884

From:
Sir John Herschel
To:
Louis Daguerre
Date:
[1 August 1839]
Source of text:
WT 67390.2
Summary:

On behalf of the Council of the R.S.L., JH writes to LD to request a camera and a hundred plates of Daguerre's about to be announced process, so that the R. S. L. may equip the James Ross expedition to the Antarctic with the means of making a photographic record of the voyage.

Contributor:
John Herschel Project

Herschel1945

From:
Sir John Herschel
To:
James Elliot
Date:
[30 May 1839]
Source of text:
DMC 695A.885.24
Summary:

Thanks JE for the account of an experiment performed by JE using an iron ring and a magnet, the results of which JE finds illustrative of the phenomena of Saturn's rings.

Contributor:
John Herschel Project

Herschel1951

From:
Sir John Herschel
To:
D. François J. Arago
Date:
[30 October 1839]
Source of text:
DMC 695A.885.30 (Adraft: TxU:H/L-0037; Reel 1054)
Summary:

Did Académie des Sciences agree to R.S.L. request for magnetic observatory in Algiers? Stresses importance of multinational cooperation. Details of planned global survey of earth's magnetic field. Encloses list of observations needed from Paris.

Contributor:
John Herschel Project

Herschel2188

From:
Sir John Herschel
To:
James Clark Ross
Date:
[19 July 1839]
Source of text:
RS:HS 14.432 (C: RS:HS 25.13.5)
Summary:

Describes method of suspending furniture in a ship such that the furniture is less influenced by the ship's motion.

Contributor:
John Herschel Project

Herschel2193

From:
Sir John Herschel
To:
Lord John Russell
Date:
[5 June 1839]
Source of text:
RS:HS 14.437 (C: RS:HS 22.14)
Summary:

Reticent to accept fellowship of London University if obligations of time and attention are too great. Requests more time to consider responsibilities of the post.

Contributor:
John Herschel Project

Herschel235

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[5 April 1839]
Source of text:
RGO 6.245.63
Summary:

About the question of an astronomer for a vacant position at Kew Observatory.

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

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

Herschel2956

From:
Sir John Herschel
To:
Adolphe Quetelet
Date:
[29? June? 1839]
Source of text:
Académie belgique: #13
Summary:

JH's brother-in-law John Stewart, who is delivering this letter, seeks admission to a printing establishment. Asks AQ to aid JS. Lists recently received letters. Glad that AQ has [C. F.] Gauss's apparatus. Discusses an experiment in photography.

Contributor:
John Herschel Project

Herschel3029

From:
Sir John Herschel
To:
Unidentified
Date:
2] February [1839
Source of text:
unknown
Summary:

Mentions visit of 1 Feb. 1839 from W. H. Fox Talbot. Reports that JH has now 'accomp[lishe]d the whole problem [of photography].' Describes JH's recent results.

Contributor:
John Herschel Project
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