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1830-1839 in date 
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From:
Sir John Herschel
To:
Peter Stewart
Date:
[22 October 1834]
Source of text:
RS:HS 25.4.2
Summary:

Acknowledges receipt of some parcels, and then discusses in some detail JH's financial situation, including the fact that JH's aunt, Caroline, has refused the annual portion of rent from Slough. JH expresses concern for the safety of Mr. Calder, and concludes with some family news.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Prinsep
Date:
[2 December 1834]
Source of text:
RS:HS 25.4.4
Summary:

Comparing meteorological records from Bengal with those at the Cape, JH is led to some theoretical considerations about air movements, supporting his ideas with reference to other meteorological observations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Basil Hall
Date:
[24 December 1834]
Source of text:
RS:HS 25.4.6
Summary:

Provides an account of JH's observatory arrangements, some interesting observations, and the effect of the weather on observing.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Heinrich Christian Schumacher
Date:
[24 February 1835]
Source of text:
RS:HS 25.4.8
Summary:

Describes JH's location at the Cape and his observational sweeps, lists nebulae and double stars, as well as comet and eclipse observations. [Letter finished on 1835-3-5.]

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Wheatstone
Date:
[8 September 1835]
Source of text:
RS:HS 25.4.14 (C: RS:HS 25.11.1)
Summary:

Comments on CW's work on light and on the velocity of electricity. JH's ruminations lead him to the idea of motion pictures.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Augustus Lloyd
Date:
[5 December 1835]
Source of text:
RS:HS 25.4.18
Summary:

Comments on the possible loss of some mail going to England, the longitude of Mauritius, and the tides at the Cape. Wonders if anyone was able to observe Halley's Comet during the recent solar eclipse.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John I. Taylor
Date:
[7 January 1836]
Source of text:
RS:HS 25.4.19
Summary:

Compares JT's observations of stars very favorably with most others available to JH; explains how JH had helped Thomas Maclear improve the mounting on a telescope at the Cape observatory, together with comments on other equipment.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Peter Stewart
Date:
[16 June 1836]
Source of text:
RS:HS 25.5.1
Summary:

Comments on financial arrangements for John [Stewart] together with other business matters, and asks for an estimate for printing the results of JH's Cape observations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[15 November 1836]
Source of text:
RS:HS 25.5.3
Summary:

Some geological samples have been lost on the way to England; JH comments on his ideas of the effect of the earth's hot core on the construction of the earth's crust.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[30 November 1836]
Source of text:
RS:HS 25.5.4
Summary:

Comments about AD's work in mathematical functions, and then refers to JH's reductions and other astronomical matters, including the need for reform of stellar nomenclature.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Wilhelm Struve
Date:
[11 February 1838]
Source of text:
RS:HS 25.5.10
Summary:

Pleased with the observations and astronomical literature JH received from FS; JH is packing up for the return to England; comments on causes of variations in stellar magnitude and several other astronomical topics.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Luke Howard
Date:
[16 June 1839]
Source of text:
RS:HS 10.1 & 22.16
Summary:

LH's meteorological circular register was laid before the Meteorological Committee, which considers it worthy of notice. Comments on this, and would like to discuss the matter further.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Heinrich Christian Schumacher
Date:
[19 January 1839]
Source of text:
RS:HS 25.5.11
Summary:

Compares magnitudes for some specific stars and then comments more generally on that question; JH believes he will no longer be able to observe in winter in England as he is too severely afflicted by rheumatism.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Lindley
Date:
[26 August 1839]
Source of text:
RS:HS 25.5.15
Summary:

In response to a request, JH provides such details as he can about atmospheric and ground temperatures at the Cape; JH goes on to describe how his flowers brought from the Cape are doing.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[William Whewell]
Date:
[28 August 1839]
Source of text:
RS:HS 25.5.16
Summary:

Wishes to have mentioned to the Physical Section of the B.A.A.S. that JH has discovered that the extreme red rays [infra-red?] of the sun do not darken photographic paper, but tend to whiten it.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[Mr. Smith?]
Date:
[5 September 1839]
Source of text:
RS:HS 25.5.17
Summary:

Is very insistent that JH receive clear title to Collingwood, with no encumbrances.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Alexander von Humboldt
Date:
[31 July 1838]
Source of text:
RS:HS 10.65 & 21.255
Summary:

Regrets he was unable to meet him when in Hanover. Took no part in Guillaume Weber's operations at the Cape, but has become acquainted with them through Weber's volumes. Has pressed the Admiralty on the necessity of Magnetic Observatories at various places. Regarding AH's observations on the barometer.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Thomas Smart Hughes
Date:
[15 January 1830]
Source of text:
RS:HS 10.216 verso (C: RS:HS 21.55)
Summary:

Replies to TH's 1829-2-16, giving details of observations. Have not been printed yet. Household in a state as they have just moved.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Francis Baily
Date:
[16?] September 1838
Source of text:
RS:HS 25.8.13
Summary:

Forwards some material from William Lamb [Lord Melbourne]; JH wants to stop any rumors that he is available for the presidency of the R.S.L.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Richard Jones
Date:
17] February [1831
Source of text:
RS:HS 21.80
Summary:

Praises and comments on RJ's book on economics [Essay on the Distribution of Wealth]. Laments overly strong language used by William Fitton and Charles Babbage in criticizing R.S.L. Comments on JH having lost the election for R.S.L. presidency.

Contributor:
John Herschel Project