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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

Herschel4025

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7 June 1842]
Source of text:
TxU:H/L-0587.9; Reel 1058
Summary:

Enjoyed CH's last letter.

Contributor:
John Herschel Project

Herschel5569

From:
Friedrich Eduard Beneke
To:
Sir John Herschel
Date:
[5 June 1842]
Source of text:
RS:HS 4.59
Summary:

Letter to accompany a complimentary copy of FB's new book on logic.

Contributor:
John Herschel Project

Herschel5585

From:
Friedrich Wilhelm Bessel
To:
Sir John Herschel
Date:
[25 June 1842]
Source of text:
RS:HS 4.75
Summary:

Informs JH of FB's arrival in Manchester and of further travel plans.

Contributor:
John Herschel Project

Herschel6419

From:
William Benjamin Carpenter
To:
Sir John Herschel
Date:
[9 June 1842]
Source of text:
RS:HS 5.187
Summary:

Has been working on the structure of mother of pearl and has come to different conclusions than those of JH. Would be pleased if he could send a sample to him to investigate further.

Contributor:
John Herschel Project

Herschel7947

From:
Charles Wheatstone
To:
Sir John Herschel
Date:
[13 June 1842]
Source of text:
RS:HS 18.148
Summary:

Encloses B.A.A.S. statement of objectives for Richmond Observatory, for which B.A.A.S. Council asks JH to organize goals and support annual subsidy.

Contributor:
John Herschel Project
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