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Herschel7819

From:
William Wallace
To:
Sir John Herschel
Date:
[5 October 1825]
Source of text:
RS:HS 18.24
Summary:

Introduces Dionysius Lardner, author of system of algebraic geometry, visiting England.

Contributor:
John Herschel Project

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

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

Herschel7942

From:
Charles Wheatstone
To:
Sir John Herschel
Date:
[23 August 1825]
Source of text:
RS:HS 18.144
Summary:

Appreciates JH's interest in and encouragement of CW's experiments. Describes new experiments to elucidate theory of undulatory motion of sound and light. Invented 'kaleidophone' to display paths of vibrating rods. Hopes JH can confirm these results.

Contributor:
John Herschel Project

Herschel8010

From:
William Hyde Wollaston
To:
Sir John Herschel
Date:
[7 February 1825]
Source of text:
RS:HS 18.278
Summary:

Sends drawings associated with WW's paper and passed by [R.S.L.] Council for printing, and memoir from M. A. Pictet.

Contributor:
John Herschel Project

Herschel8011

From:
William Hyde Wollaston
To:
Sir John Herschel
Date:
[31 March 1825]
Source of text:
RS:HS 18.279
Summary:

Invites JH to dinner Saturday to meet J. G. S. Van Breda.

Contributor:
John Herschel Project

Herschel8020

From:
William Hyde Wollaston
To:
Sir John Herschel
Date:
[1825 to 1827]-[?]-2
Source of text:
RS:HS 18.288
Summary:

Encloses paper sent by Mr. Perkins for R.S.L, and impression just received from printer.

Contributor:
John Herschel Project

Herschel8050

From:
Samuel Young
To:
Sir John Herschel
Date:
[5 June 1825]
Source of text:
RS:HS 18.317
Summary:

Returning to Cookham. Thanks for minerals. Describes shipment of new minerals from Baffin Bay. Expecting another from Rio de la Plata, courtesy of Woodbine Parish [consul-general to Buenos Aires].

Contributor:
John Herschel Project

Herschel8065

From:
Sir John Herschel
To:
Thomas Young
Date:
[19 June 1825]
Source of text:
RS:HS 18.332 (C: 20.214)
Summary:

Edward Sabine declares that R.S.L. is hostile to ES's interests. If ES makes future claim for compensation, JH wants TY's opinion in writing. Need to order four night glasses for Fairlight Station. Encloses letter from [Richard] Copeland.

Contributor:
John Herschel Project

Herschel8066

From:
Thomas Young
To:
Sir John Herschel
Date:
[5 November 1825]
Source of text:
RS:HS 18.333
Summary:

Ask Charles Babbage to send tables of logarithms to TY, who will compare them to [Brook] Taylor's. Bets that five errors will be found. Did JH order mountain barometer from [J. F.] Newman? Will inquire about [W. E.] Parry's instruments. Admiralty, not us, should order sextants.

Contributor:
John Herschel Project

Herschel8067

From:
Thomas Young
To:
Sir John Herschel
Date:
[7 November 1825]
Source of text:
RS:HS 18.334
Summary:

Questions JH's conclusion that Board of Longitude has power to interfere in Admiralty operations. Disagrees that Nautical Almanac errors are serious. Compares them to tables of Charles Hutton, F. X. von Zach, and H. C. Schumacher. When will TY receive Charles Babbage's table?

Contributor:
John Herschel Project

Herschel8068

From:
Mrs. Forbes
To:
Sir John Herschel
Date:
[30 May 1825]
Source of text:
RS:HS 18.335a
Summary:

Invites JH to dinner. Expects Mr. and Mrs. [Andrew?] Spottiswoode and Mr. and Mrs. Beckwith.

Contributor:
John Herschel Project

Herschel8069

From:
Sir John Herschel
To:
Thomas Young
Date:
[8 November 1825]
Source of text:
RS:HS 18.335b (C, encl 1p: 20.223)
Summary:

Encloses note from Sir John Barrow refusing scientific instruments and objecting to using barometers. Supplying cameras and sextants to Admiralty's marine survey is not interference by Board of Longitude. Sent JH's expenses to Edward Sabine; has no further word on subject. Encloses Mr. Stewart's note about damages at Wrotham.

Contributor:
John Herschel Project

Herschel8070

From:
Thomas Young
To:
Sir John Herschel
Date:
[15] November 1825
Source of text:
RS:HS 18.336
Summary:

[Board of Longitude] must answer to Parliament, not to public opinion. Do not contest the system. Order pocket sextants; they and barometer will be sent to Captain [Richard] Copeland. Knows how JH feels about expenses sent to Edward Sabine, but please write receipt and send it to TY within week. Will write directly to Charles Babbage for tables.

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

Herschel8095

From:
Franz Xaver von Zach
To:
Sir John Herschel
Date:
[7 February 1825]
Source of text:
RS:HS 18.361
Summary:

Comments on a variety of topics about various scientific persons on the Continent, on JH's travels in Europe, on ways to send packets between England and Europe, and on FZ's copy of the Nautical Almanac, which FZ has not yet received. Makes comparisons between his and JH's barometer, offers some comet observations, and talks about the appropriate date for Easter. Awaits JH's double star observations.

Contributor:
John Herschel Project

Herschel8189

From:
Sir John Herschel
To:
Josef von Fraunhofer
Date:
[27 January 1825]
Source of text:
RS:HS 19.5
Summary:

JF was elected associate of Astronomical Society. Will send Society's Transactions and JH's 'Absorption of Light.' W. H. F. Talbot delivered JF's 'Crown glass Prism.' JH presented J. G. Soldner's observations to Society and proposed Soldner as associate.

Contributor:
John Herschel Project

Herschel8243

From:
Sir John Herschel
To:
Henry Kater
Date:
16?] November [1825
Source of text:
RS:HS 19.50
Summary:

Thomas Young approved supplying [Richard] Copeland with two sextants and one mountain barometer.

Contributor:
John Herschel Project

Herschel8452

From:
James South
To:
Sir John Herschel
Date:
[26?] February 1825
Source of text:
RS:HS 16.433
Summary:

Reports on some observations from JS's observatory near Paris and on his contacts with the Paris Observatory. Relays to JH a request from Alexander von Humboldt for barometric observations. Invites JH to visit.

Contributor:
John Herschel Project

Herschel8453

From:
Sir John Herschel
To:
James South
Date:
[10 March 1825]
Source of text:
RS:HS 16.434 (C: 20.201)
Summary:

Making, reducing, and publishing double star work is very difficult and, because of Wilhelm Struve's recent endeavors, less pressing than it had been. Mentions various doubles. Expresses interest in JS's plan to purchase a very large refractor.

Contributor:
John Herschel Project
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