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Herschel10099

From:
James Grahame
To:
Sir John Herschel
Date:
[15 January 1840]
Source of text:
RS:HS 8.436
Summary:

Comments on JH's laying to rest of William Herschel's 40-foot telescope.

Contributor:
John Herschel Project

Herschel101

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[6 July 1840]
Source of text:
RGO 6.675.239
Summary:

Comments on a proposed request for a government grant to establish a magnetic and meteorological institute.

Contributor:
John Herschel Project

Herschel10100

From:
James Grahame
To:
Sir John Herschel
Date:
[21 January 1840]
Source of text:
RS:HS 8.437
Summary:

On the effect of JH's visit to Nantes.

Contributor:
John Herschel Project

Herschel10101

From:
James Grahame
To:
Sir John Herschel
Date:
[3 October 1840]
Source of text:
RS:HS 8.438
Summary:

Note accompanying a sketch of an earlier time in the lives of JG and JH (sketch by Jane Grahame).

Contributor:
John Herschel Project

Herschel10308

From:
Basil Hall
To:
Sir John Herschel
Date:
[8 January 1840]
Source of text:
RS:HS 9.191
Summary:

Francis Beaufort has shown him his copy of the 'Requiem' and would be pleased if JH would send him a copy. Mr. Harvey and himself have been observing nebulae on the clear nights. Is having a Munich object glass mounted. Will be in town towards the end of the month.

Contributor:
John Herschel Project

Herschel10309

From:
Basil Hall
To:
Sir John Herschel
Date:
[3 November 1840]
Source of text:
RS:HS 9.192
Summary:

Wishes JH would lay hands on the memorandum concerning the Zenith observatory on Etna. Explains why JH's theories regarding a point in gunnery do not work in actual practice. Queries the measurement given by JH for the height of Etna.

Contributor:
John Herschel Project

Herschel10310

From:
Basil Hall
To:
Sir John Herschel
Date:
[9 November 1840]
Source of text:
RS:HS 9.193
Summary:

Regarding the correct figure for the height of Etna, W. H. Smyth favors the half foot measurement. Regarding falls of stones from Vesuvius. Encloses calculations made by professor at Naval College. Remembers large balls of lava at Teneriffe.

Contributor:
John Herschel Project

Herschel10322

From:
Marshall Hall
To:
Sir John Herschel
Date:
[3 April 1840]
Source of text:
RS:HS 9.204
Summary:

Was not certain how to reply to his last obliging letter. Has resolved to write to Professor [J. P.?] Müller. Thought it right to inform JH of his plans.

Contributor:
John Herschel Project

Herschel10441

From:
John R. Hind
To:
Sir John Herschel
Date:
[23 July 1840]
Source of text:
RS:HS 9.319
Summary:

Drawing attention to his prediction of the storms of 1838 and 1839.

Contributor:
John Herschel Project

Herschel10534

From:
Thomas Hodgkin
To:
Sir John Herschel
Date:
[4 January 1840]
Source of text:
RS:HS 9.411
Summary:

Affairs at the Cape; thinks Andries Stockenström is the man to be sent out to negotiate with the Boers. Would like JH's views on the subject.

Contributor:
John Herschel Project

Herschel10535

From:
Sir John Herschel
To:
Thomas Hodgkin
Date:
[7 February 1840]
Source of text:
RS:HS 9.412 & 22.40
Summary:

Has written a letter to Lord John Russell outlining the case of Andries Stockenström. Does not wish to become involved in Cape politics or the affairs of the Anti-Slavery Society much as he appreciates their importance.

Contributor:
John Herschel Project

Herschel10622

From:
Luke Howard
To:
Sir John Herschel
Date:
[22 February 1840]
Source of text:
RS:HS 10.3
Summary:

Has been applying his mode of calculation for the barometrical heights for the years 1815-23 and sent the results to the R.S.L. As JH may not see them he sends a few comments on them. Would like a suitable colleague to share his labors.

Contributor:
John Herschel Project

Herschel10623

From:
Luke Howard
To:
Sir John Herschel
Date:
[21 March 1840]
Source of text:
RS:HS 10.4
Summary:

Encloses some more calculations of height by means of the barometric mean temperature. Comments on these. Staying at Ackworth until April.

Contributor:
John Herschel Project

Herschel1067

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[3 March 1840]
Source of text:
RS:HS 25.6.2
Summary:

Tells WT about JH developing the thermographic paper which is susceptible to 'calorific' and 'chemical' rays of light.

Contributor:
John Herschel Project

Herschel1068

From:
Sir John Herschel
To:
[Spencer J. A.] Compton
Date:
[8 July 1840]
Source of text:
RS:HS 25.6.6
Summary:

The Physical [?] Committee is meeting the next day to deal with the question of establishing a magnetic and meteorological observatory. JH [Chair of the Physical Committee?] cannot attend the meeting and sends his supportive, but cautioning, comments.

Contributor:
John Herschel Project

Herschel10729

From:
Robert Hunt
To:
Sir John Herschel
Date:
[15 April 1840]
Source of text:
RS:HS 10.83
Summary:

Would like JH's account of his own method of fixing a photograph as noted in his memoir. Singular phenomenon of the Daguerreotype. Hopes to produce a photographic paper to equal the silver plate before the month has expired. Will let him know when his process is complete.

Contributor:
John Herschel Project

Herschel10730

From:
Sir John Herschel
To:
Robert Hunt
Date:
[19 April 1840]
Source of text:
RS:HS 22.49
Summary:

Exchanging further information on several aspects of the photographic process [see RH's 1840-4-15].

Contributor:
John Herschel Project

Herschel10731

From:
Robert Hunt
To:
Sir John Herschel
Date:
[23 April 1840]
Source of text:
RS:HS 10.84
Summary:

Is grateful for the handsome manner in which JH has acknowledged RH's work. Would be willing to prepare a memoir for the R.S.L. Does Louis Daguerre's patent affect RH's manufacture of photographic papers? Has not studied the bromnets so far, but has studied the effects of bromine on plates. Comments on his results.

Contributor:
John Herschel Project

Herschel10732

From:
Robert Hunt
To:
Sir John Herschel
Date:
[9 May 1840]
Source of text:
RS:HS 10.85
Summary:

Sends his paper for communication to the R.S.L. Will send some more examples later as his camera has developed a defect.

Contributor:
John Herschel Project

Herschel10733

From:
Robert Hunt
To:
Sir John Herschel
Date:
[16 May 1840]
Source of text:
RS:HS 10.86
Summary:

Returns the photographic drawings of W. H. Fox Talbot with many thanks. Fears for their permanence. Has produced similar pictures himself acting on bromide of silver with hydrocholoric acid. Has had trouble with his periscope lens.

Contributor:
John Herschel Project
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