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Herschel, John in addressee 
1860-1869::1864::11 in date 
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Herschel5829

From:
Alfred Brothers
To:
Sir John Herschel
Date:
[2 November 1864]
Source of text:
RS:HS 4.298
Summary:

Is grateful for his letter regarding the claim for the discovery of the hyposulfite fixing process.

Contributor:
John Herschel Project

Herschel5830

From:
Alfred Brothers
To:
Sir John Herschel
Date:
[7 November 1864]
Source of text:
RS:HS 4.299
Summary:

Regarding the differences between portraits and photographs. Is sending him some magnesium for photographic purposes.

Contributor:
John Herschel Project

Herschel7748

From:
G. Wharton Simpson
To:
Sir John Herschel
Date:
[7 November 1864]
Source of text:
RAS:JH Archive 13/3.110; Reel 10
Summary:

Photographic News received copies of papers from R.S.P.T. giving evidence of [JH's] use of hyposulfite of soda. Will refer to W. H. F. Talbot on use of bromine, as JH suggested. P. B. Goddard of Philadelphia claims to have used bromine in Daguerreotype process in 1839, but did not announce it publicly until 1843.

Contributor:
John Herschel Project

Herschel4538

From:
Charles Pritchard
To:
Sir John Herschel
Date:
[9 November 1864]
Source of text:
RS:HS 14.92
Summary:

Compares W. L. Newman's and CP's calculations of optical coefficients to those in JH's work. Sends JH formulae and tables for calculating telescopic lens thickness and shape in relation to the dimensions of the telescope. Wishes JH luck on Iliad.

Contributor:
John Herschel Project

Herschel4546

From:
Charles Pritchard
To:
Sir John Herschel
Date:
[10 November 1864]
Source of text:
RS:HS 14.93
Summary:

Compares JH's equation for lens curvature with that of C. F. Gauss.

Contributor:
John Herschel Project

Herschel14743

From:
William Hartley
To:
Sir John Herschel
Date:
[12 November 1864]
Source of text:
TxU:H/M-0935.1; Reel 1083
Summary:

Encloses prints of specimens produced by WH's new lathe for manufacturing telescope specula. Asks JH's opinion of results.

Contributor:
John Herschel Project

Herschel4044

From:
William Thomson
To:
Sir John Herschel
Date:
[12 November 1864]
Source of text:
RS:HS 17.350a
Summary:

Reads JH's earthquake article and believes the effects of the transferences of matter of which JH speaks must be very small. Discusses the dynamical theory of heat. Will send to JH volume WT is editing.

Contributor:
John Herschel Project

Tyndall2177

From:
John Tyndall
To:
John Herschel
Date:
14th Nov. 1864
Source of text:
HS 395; MS JT/1/TYP/2/531, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3617

From:
John Tyndall
To:
Sir John Herschel
Date:
[14 November 1864]
Source of text:
RS:HS 17.395 (C: RI 531)
Summary:

Is not 'at liberty' to speak of experiments on change of refrangibility of 'extra-red' rays. Discusses other experiments on extra-red regions, having used various prisms but not obtaining JH's results.

Contributor:
John Herschel Project

Herschel13612

From:
[A. J. F.] Yvon Villarceau
To:
Sir John Herschel
Date:
[17 November 1864]
Source of text:
RS:HS 17.423
Summary:

Thanks for JH's 'Catalogue of Nebulae.' Comments on the problems of accuracy in YV's meridian instrument due to fluctuating temperatures and other problems. Also refers to geodetic and trigonometric considerations.

Contributor:
John Herschel Project

Tyndall2180

From:
John Tyndall
To:
John Herschel
Date:
17th Nov. 1864
Source of text:
HS 397, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3634

From:
John Tyndall
To:
Sir John Herschel
Date:
[17 November 1864]
Source of text:
RS:HS 17.397 (C: RI 533)
Summary:

JT does not have 'luxury' of using sunshine; uses electric light. Perhaps this adds to inability to obtain heat spots [see JH's 1864-11-16].

Contributor:
John Herschel Project

Herschel13844

From:
Few & Co.
To:
Sir John Herschel
Date:
[18 November 1864]
Source of text:
TxU:H/M-0191; Reel 1087
Summary:

Received JH's letter of 17 Nov. and full instructions from [Charles] Babbage. Will reply to solicitor of General Reversionary & Investment Company regarding Hollier Trust.

Contributor:
John Herschel Project

Tyndall2184

From:
John Tyndall
To:
John Herschel
Date:
18th Nov. 1864
Source of text:
HS 398a, RS
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3327

From:
John Tyndall
To:
Sir John Herschel
Date:
[18 November 1864]
Source of text:
RS:HS 17.398a (C: RI 534)
Summary:

Asks JH to be a shareholder in venture to publish new weekly scientific journal.

Contributor:
John Herschel Project

Herschel11901

From:
Norman Macleod
To:
Sir John Herschel
Date:
20] November [1864
Source of text:
RS:HS 12.263
Summary:

[Alexander] Strahan would like an article from JH on the [Great] Pyramid, but NM thinks that Piazzi Smyth is the man. All the same he would appreciate an article from JH, perhaps on a chemical theme.

Contributor:
John Herschel Project

Herschel12066

From:
Roderick Impey Murchison
To:
Sir John Herschel
Date:
[21 November 1864]
Source of text:
RS:HS 12.432
Summary:

Regarding the feasibility of a translation of Carl Ritter's geographical works. Will put the matter to the Council of the Royal Geographical Society and let JH know their views. The Russians were grateful for JH's help.

Contributor:
John Herschel Project

Herschel6854

From:
Warren de La Rue
To:
Sir John Herschel
Date:
[22 November 1864]
Source of text:
RS:HS 6.162
Summary:

Encloses a letter from Angelo Secchi. Sent him a Herschelian eye piece and is having a prism prepared for him. Secchi has seen James Nasmyth's 'willow leaves.'

Contributor:
John Herschel Project

Herschel4268

From:
Charles Pritchard
To:
Sir John Herschel
Date:
[24 November 1864]
Source of text:
RS:HS 14.94
Summary:

Praises JH's Iliad. Asks R.S.L. for funds to cover expenses incurred by spherical observations. Details information to be included in optical tables.

Contributor:
John Herschel Project

Herschel4894

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[24 November 1864]
Source of text:
RS:HS 1.281 (C: RGO 6.381.439)
Summary:

Informing him that he has just heard of the death of Wilhelm Struve.

Contributor:
John Herschel Project
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