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Herschel2648

From:
Mary Somerville
To:
Sir John Herschel
Date:
[1830]
Source of text:
RS:HS 16.339
Summary:

Asks JH to send the astronomical part of her manuscript [Mechanism of the Heavens] by Mr. Richards on Thursday.

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Herschel2649

From:
Mary Somerville
To:
Sir John Herschel
Date:
[1830]
Source of text:
RS:HS 16.340
Summary:

Used a counter spell to keep the moon at a 'due distance.' Her previous computations were careless. Asks JH to return part of her manuscript [Mechanism of the Heavens] for corrections.

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Herschel2650

From:
Mary Somerville
To:
Sir John Herschel
Date:
[11 February 1831]
Source of text:
RS:HS 16.341
Summary:

Wants to use method of indeterminate coefficients to integrate the differential equations of the planets' perturbations. [Originally written to W. Fairfax.]

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Herschel2651

From:
Mary Somerville
To:
Sir John Herschel
Date:
[3 March 1831]
Source of text:
RS:HS 16.342
Summary:

Needs advice on integrating equations. Praises JH's book [Prelim. Discourse]. Says James Mackintosh and [Henry] Hallam also praise it. Note from William Somerville, which needs a reply, is enclosed.

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Herschel2652

From:
Sir John Herschel
To:
Mary Somerville
Date:
[8 March 1831]
Source of text:
RS:HS 16.343 (ACCS: RS:HS 25.1.33)
Summary:

Explains to MS P. S. Laplace's method of indeterminate coefficients in mathematics. Thanks MS for her praise of his book [Prelim. Discourse], which JH values more highly than newspaper reviews.

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Herschel2653

From:
Mary Somerville
To:
Sir John Herschel
Date:
[28 May 1831]
Source of text:
RS:HS 16.344
Summary:

Sends preliminary observations that will be prefixed to her book [Mechanism of the Heavens]. Wants JH to make any criticisms of it before it is published.

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Herschel2654

From:
Sir John Herschel
To:
Mary Somerville
Date:
[11 June 1831]
Source of text:
RS:HS 16.345 (C: RS:HS 21.84)
Summary:

Returns proofs and sends a few remarks concerning them. Discusses difficulty of measuring Eta Coronae. Anxious to see her [Mechanism of the Heavens]. Has another daughter [Isabella].

Contributor:
John Herschel Project, Brigitte Stenhouse
Text Online

Tyndall0561

From:
John Tyndall
To:
John Frederick William Herschel
Date:
8th November 1851
Source of text:
HS 17.381, RS
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

Tyndall0562

From:
John Tyndall
To:
John Frederick William Herschel
Date:
8th November 1851
Source of text:
HS 17.382, RS
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

Tyndall0566

From:
John Frederick William Herschel
To:
John Tyndall
Date:
Nov 10 / 51
Source of text:
MS JT/1/H/89, RI
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

Tyndall0594

From:
John Frederick William Herschel
To:
John Tyndall
Date:
9th Jan /52
Source of text:
MS JT/1/TYP/2/496, RI
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

Tyndall0596

From:
John Tyndall
To:
John Frederick William Herschel
Date:
10 Jan. 1852
Source of text:
HS 17.383, RS
Summary:

No summary available.

Contributor:
Tyndall Project
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