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1860-1869 in date 
Herschel, John in author 
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From:
Sir John Herschel
To:
Augustus De Morgan
Date:
1860
Source of text:
RS:HS 23.292
Summary:

A story about Voltaire; arrangements to visit AD.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Herbert McLeod
Date:
[1860?]
Source of text:
RS:HS 13.12 (C: RS:HS 23.385 & 25.13.14 & 15)
Summary:

Reasons why he is unable to sign the Memorial to the bishops regarding their attitude to Essays and Reviews.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Alexander Stewart Herschel
Date:
[7 January 1860]
Source of text:
JHS 1.113
Summary:

A letter of great sadness: someone is at death's door; not much hope is held out. [This letter may refer to the imminent death of daughter Margaret Louisa, because of its reference to poor Reginald, which was the name of MLH's husband].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[Mr.] Bell
Date:
[8 January 1860]
Source of text:
TxU:H/L-0089; Reel 1054
Summary:

Gratitude for sending [John] Taylor's book. Believes dimensions of Great Pyramid exhibit knowledge of geometry but not of calculus among ancient Egyptians. Suggests way to modify British standard of length to produce 'perfect metrical system' superior to that of French.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Sir Benjamin Collins Brodie [the elder]
Date:
[8 January 1860]
Source of text:
RS:HS 4.283 & 23.293
Summary:

Agrees with BB that the honorarium paid to the secretaries should be increased. Further comments on this point.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Rowan Hamilton
Date:
[8 January 1860]
Source of text:
TCD 1493:1138
Summary:

Sends back manuscript of WH's [Elements of Quaternions] with comments. Says it's excellent but somewhat distracting to a beginner.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Herbert Spencer
Date:
12 January [1860]
Source of text:
RS:HS 16.484 (C: 23.294)
Summary:

[Responding to HS's 1859-12-31,] JH presents additional problems in the nebular hypothesis, critiques in detail HS's views of the distribution of cometary orbits, and argues against HS's theory of sunspot formation.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Smyth
Date:
[3 February 1860]
Source of text:
RS:HS 16.311 (C: RS:HS 23.295)
Summary:

Claims if he had known certain informations concerning discovery of Neptune, he would have ranked J. C. Adams's claim equal with U. J. J. Leverrier's.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Joshua Cooper
Date:
[8 February 1860]
Source of text:
RS:HS 23.296
Summary:

On the usefulness of Stephen's Writing Fluid to stop the sun's excess of light at large apertures in the telescope.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Lassell
Date:
[11 February 1860]
Source of text:
RS:HS 23.297
Summary:

Comments on WL's 4-foot equatorial telescope of which WL sent JH a lithograph [see WL's 1860-2-8].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Rowan Hamilton
Date:
[1 March 1860]
Source of text:
TCD 1493:1144 (C: TCD 1493:1145)
Summary:

Apologizes for not returning sheets of Elements of Quaternions sooner, but was ill. Again cautions WH that method might be too advanced for elementary readers.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[2 March 1860]
Source of text:
RGO 6.195.251
Summary:

Offers some possible explanation for what the unnamed observer saw [see GA's 1860-3-1].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[2 March 1860]
Source of text:
RGO 6.457.147
Summary:

Is arguing for the development of a British metrical system based on the length of the polar axis of the earth.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Norman Pogson
Date:
[19 March 1860]
Source of text:
RS:HS 14.2 (C: RS:HS 23.299)
Summary:

Agrees with NP's proposed method of designating variable stars. Offers some suggestions from JH's own experience.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Sabine
Date:
[29 March 1860]
Source of text:
RS:HS 23.300
Summary:

Against changing location of Royal Observatory [from Greenwich], but will defer to opinion of [G. B. Airy] Astronomer Royal. Airy is most competent to judge situation. Still ill.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
[Sir Edward] Ryan
Date:
[16 April 1860]
Source of text:
APS B.H435p.19
Summary:

Comments on, and encloses, a letter from JH's son William James, who has accepted responsibility for trying to resolve a grave situation [in India].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the Athenaeum
Date:
[23 April 1860]
Source of text:
Athenaeum, #1696 (April 28, 1860), 581-2 & John Taylor, The Great Pyramid, 2nd.
Summary:

Expresses his views on how the British should select their standard of length. Also discusses John Taylor's views of the Great Pyramid.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Anne Sheepshanks
Date:
[25 April 1860]
Source of text:
RS:HS 16.122 (C: RS:HS 25.9.77)
Summary:

Does not wish to forward some letters of AS's brother, Richard, as JH has made marginal notes he would not wish others to read.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the Athenaeum
Date:
[1 May 1860]
Source of text:
Athenaeum, #1697 (May 5, 1860), 617 & John Taylor, The Great Pyramid, 2nd. ed. (
Summary:

[Following up on JH's 1860-4-23,] notes another numerical relationship between the dimensions of the Great Pyramid and those of the earth.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Sabine
Date:
[3 May 1860]
Source of text:
RS:HS 23.301
Summary:

Too ill to work on anything besides nebula catalogue. Discusses recent meteorological phenomena, period of solar spots, and great pyramid.

Contributor:
John Herschel Project