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1820-1829 in date 
Young, Thomas in correspondent 
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Herschel8079

From:
Sir John Herschel
To:
Thomas Young
Date:
[30 August 1828]
Source of text:
RS:HS 18.345 (C: 21.26)
Summary:

Encourages TY to publish 1829 supplement to Nautical Almanac. JH originally proposed supplement to introduce improvements that would bring N. A. to be like Encke's Ephemeris. That is all ended now. English are dropping behind French and Germans in science. JH refuses to accept money from government 'which treats its agents so cavalierly.' Reduction of Parramatta [Australia] observations. Did not see TY's paper in W. T. Brande's [Quarterly Journal of Science and Art], but objects to substitution of true for mean equinox.

Contributor:
John Herschel Project

Herschel8080

From:
Thomas Young
To:
Sir John Herschel
Date:
31] August [1828
Source of text:
RS:HS 18.346
Summary:

Will not hold JH responsible for accuracy of William Richardson's computations. No instructions yet from Admiralty about Nautical Almanac, which goes to press soon. TY will insert JH's equinoctial time. Notes two works by A. F. C. Kollman on harmony and [Beck] on 'thorough-bass.'

Contributor:
John Herschel Project

Herschel8081

From:
Thomas Young
To:
Sir John Herschel
Date:
[1 September 1828]
Source of text:
RS:HS 18.347
Summary:

Feels responsible for JH refusing to accept Navy's £25 reimbursement. Used JH's [equinoctial] time [in Nautical Almanac supplement], but with different notation. Disagrees that England's scientific reputation depends upon its government. William Richardson is justified in continuing work of late Board of Longitude. Reports meeting in Paris with Jacques Babinet and François Arago.

Contributor:
John Herschel Project

SOMERVILLE645

From:
Thomas Young
To:
Mary Somerville
Date:
30 Oct 1828
Source of text:
MSY 1 / 217, Dep. c. 372, Bod, MS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

Herschel8084

From:
Thomas Young
To:
Sir John Herschel
Date:
3 December [1828]
Source of text:
RS:HS 18.350
Summary:

Problems calculating sun's mean longitude due to movement of perigee. Questions S. D. Poisson's value for sidereal year.

Contributor:
John Herschel Project
Text Online

Faraday0388

From:
Thomas Young
To:
Michael Faraday
Date:
7 January 1829
Source of text:
RI MS F1 H30
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday0390

From:
Thomas Young
To:
Michael Faraday
Date:
4 February 1829
Source of text:
RI MS F1 N/3/09
Summary:

No summary available.

Contributor:
Faraday Project

Herschel8082

From:
Thomas Young
To:
Sir John Herschel
Date:
16 February [1829]
Source of text:
RS:HS 18.348
Summary:

JH's determination of length of equinoctial year will remain for long time. Mrs. Young is delighted to hear of JH's new discovery.

Contributor:
John Herschel Project

Herschel8083

From:
Thomas Young
To:
Sir John Herschel
Date:
[18 February 1829]
Source of text:
RS:HS 18.349
Summary:

Invites JH to join TY to meet Thomas Henderson at [Davies] Gilbert's party Saturday. T. F. Colby accepted payment from Board of Longitude up to Christmas; Henry Kater would not accept payment beyond dissolution of Board. TY believes JH should accept payment at least from March to June.

Contributor:
John Herschel Project

Herschel8087

From:
Thomas Young
To:
Sir John Herschel
Date:
[1829-5 or earlier]
Source of text:
RS:HS 18.353
Summary:

Measurement of moon's diameter and distance. Expects JH will soon have 'official authority over me' and [Nautical Almanac]. Astronomers probably regulate sidereal clock by variable equinox because they cannot find a fixed one. Errors in JH's equinoctial time.

Contributor:
John Herschel Project
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