Search: John Herschel in collection 
Herschel, John in correspondent 
1840-1849::1842::06 in date 
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Herschel10102

From:
James Grahame
To:
Sir John Herschel
Date:
[3 June 1842]
Source of text:
RS:HS 8.439
Summary:

Of JG's intention to write a pamphlet against slavery.

Contributor:
John Herschel Project

Herschel10103

From:
James Grahame
To:
Sir John Herschel
Date:
11] June [1842
Source of text:
RS:HS 8.440
Summary:

Note to let JH know that JG is in England.

Contributor:
John Herschel Project

Herschel10104

From:
James Grahame
To:
Sir John Herschel
Date:
16] June [1842
Source of text:
RS:HS 8.441
Summary:

A note to arrange a meeting with JH.

Contributor:
John Herschel Project

Herschel10105

From:
James Grahame
To:
Sir John Herschel
Date:
[1842-6-22 or later]
Source of text:
RS:HS 8.442
Summary:

A note to arrange dinner with JH.

Contributor:
John Herschel Project

Herschel12023

From:
Roderick Impey Murchison
To:
Sir John Herschel
Date:
[16 June 1842]
Source of text:
RS:HS 12.385
Summary:

Would like JH to come to Manchester on 23-25 to give support for the Kew Observatory. F. W. Bessel and G. A. Erman are coming.

Contributor:
John Herschel Project

Herschel13539

From:
Sir John Herschel
To:
[Sir] Edward Ryan
Date:
[8 June 1842]
Source of text:
TxU:H/L-0765.3; Reel 1089
Summary:

Welcomes ER back to England. Met ER's host, Charles Babbage, at Greenwich yesterday. Wants to visit before ER departs for Geneva, but JH's wife is ill. Based on accounts of Geneva by ER's wife, JH sent three oldest daughters and their governess to spend summer there.

Contributor:
John Herschel Project

Herschel13619

From:
William H. Allen
To:
Sir John Herschel
Date:
[24 June 1842]
Source of text:
TxU:H/M-0004; Reel 1062
Summary:

Acknowledges JH's payment for stationery for Breslau magnetic observatory.

Contributor:
John Herschel Project

Herschel1363

From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[2 June 1842]
Source of text:
RS:HS 17.312
Summary:

Carl Steinheil has proposed making telescope mirrors by plating silver on glass. Is writing to JH to tell him that somewhat earlier he had included this process in one of his patents.

Contributor:
John Herschel Project

Herschel14361

From:
Edward Sabine
To:
Sir John Herschel
Date:
[1842 to 1843]-6-12
Source of text:
TxU:H/M-0517.5; Reel 1093
Summary:

Asks JH to inspect first magnetic and meteorological observations from [Tasmania] and Toronto. Hopes North American observations will be increased.

Contributor:
John Herschel Project

Herschel14368

From:
Edward Sabine
To:
Sir John Herschel
Date:
[17 June 1842]
Source of text:
TxU:H/M-0519; Reel 1093
Summary:

Encloses bill from W. H. Allen & Co. regarding Breslau observatory. [JH annotation: Details of bill.]

Contributor:
John Herschel Project

Herschel1667

From:
Sir John Herschel
To:
Alfred Smee
Date:
[15 June 1842]
Source of text:
RS:HS 16.153
Summary:

On the basis of some compounds referred to by AS [see 1842-5-10], JH has now developed a new form of photography using gold as a stimulant; JH calls it the 'Argyrotype'.

Contributor:
John Herschel Project

Herschel1668

From:
Alfred Smee
To:
Sir John Herschel
Date:
[21 June 1842]
Source of text:
RS:HS 16.154
Summary:

Note accompanying a sample of iridium.

Contributor:
John Herschel Project

Herschel2211

From:
Sir Edward Ryan
To:
Sir John Herschel
Date:
[9 June 1842]
Source of text:
RS:HS 14.455
Summary:

Hopes Lady Herschel is well soon. Meeting of JH and ER in England must be postponed. Visiting his family soon. Hopes to see Italy and Germany.

Contributor:
John Herschel Project

Herschel3020

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[5 June 1842]
Source of text:
RS:HS 17.130
Summary:

Thanks JH for his letter [1841-10-10]. Discusses difficulty of measuring distance between a star of primary largeness and a small telescopic neighbor star. Rejects theory that temperature influences observation results. Appreciates JH assessment of the correspondence between WS's work and that of [F. W.] Bessel. Complains confidentially that Bessel neglects to acknowledge WS's work on parallax, begun a year before Bessel's own. Assures JH of WS's continual efforts in observing new phenomena. Comments on JH's 'On the Revision and Rearrangement of the Constellations.'

Contributor:
John Herschel Project

Herschel3121

From:
Sir John Herschel
To:
C. A. von Steinheil
Date:
[16 June 1842]
Source of text:
RS:HS 17.5 (C: RS:HS 22.124)
Summary:

Thanks for suggestion of gold plating the telescope mirrors. Mentions idea of mounting a reflector horizontally but finds its execution 'insufferable'. Thanks for work on photometric measurement of light of stars. Disagrees on some results. Encloses new photographic specimens.

Contributor:
John Herschel Project

Herschel3243

From:
Sir John Herschel
To:
James David Forbes
Date:
[2 June 1842]
Source of text:
St. Andrews 55 (C: RS:HS 22.122)
Summary:

Compares actinometric measurements of radiation. Explains interest in total eclipse relative to actinometry. Discusses the possibility of making actinometric measurements by photographic means.

Contributor:
John Herschel Project

Herschel3489

From:
[Peter Mark Roget]
To:
Sir John Herschel
Date:
[8 June 1842]
Source of text:
RS MM.16.151
Summary:

With R.S.L. Council, is glad that compliance with JH's wishes regarding photographical inquiries has pleased JH.

Contributor:
John Herschel Project

Herschel3603

From:
Sir John Herschel
To:
[R.S.L. Council?]
Date:
[1 June 1842]
Source of text:
RS MC.3.218
Summary:

Discusses JH's spectrometer and possibility of using surplus from R.S.L. Donation Fund for its construction and enquiry with it into nature of light and heat.

Contributor:
John Herschel Project

Herschel3675

From:
Richard Sheepshanks
To:
Sir John Herschel
Date:
[2 June 1842]
Source of text:
RS:HS 16.18
Summary:

Gives his opinion of [George] Merz, stating that he has not done anything to 'distinguish himself from a mere practical follower of [Josef] Fraunhofer.' Requests that JH send encouragement to James Challis.

Contributor:
John Herschel Project

Herschel4015

From:
Sir John Herschel
To:
Robert Hunt
Date:
[2 June 1842]
Source of text:
George Eastman House, 9.17 (C: RS:HS 22.121)
Summary:

Sorry to hear RH has been ill; JH sends some photographic examples.

Contributor:
John Herschel Project
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