Search: Herschel, John in correspondent 
1860-1869::1864::11 in date 
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Herschel14744

From:
Sir John Herschel
To:
Unidentified
Date:
[1864-11 or later]
Source of text:
TxU:H/M-0935.2; Reel 1083
Summary:

Committee pamphlet expressed incorrect representation of JH's views on changes in British standards of measurement.

Contributor:
John Herschel Project

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

Tyndall2176

From:
John Herschel
To:
John Tyndall
Date:
Nov. 13 1864
Source of text:
HS 394b; MS JT/1/TYP/2/529-30, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3139

From:
Sir John Herschel
To:
John Tyndall
Date:
[13 November 1864]
Source of text:
RI 305 (C: 529-30); draft 4pp RS:HS 17.394b (C: 24.66)
Summary:

Thanks for and comments on paper on luminous and obscure radiation, particularly on extra spectral rays, incandescence of platinum, and experiment using transcalescence of iodine.

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

Herschel12609

From:
Sir John Herschel
To:
T. P. Anderson and J. H. Shonbridge
Date:
[15 November 1864]
Source of text:
TxU:H/L-0033; Reel 1054
Summary:

Signed and returned accountant's form. Delays reply until JH can confer with other trustees [of Hollier Trust Fund].

Contributor:
John Herschel Project

Tyndall2179

From:
John Herschel
To:
John Tyndall
Date:
Nov. 16/64
Source of text:
HS 396; MS JT/1/H/102; MS JT/1/TYP/2/532, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3542

From:
Sir John Herschel
To:
John Tyndall
Date:
[16 November 1864]
Source of text:
RS:HS 17.396 (C: RI 532 & RS:HS 24.68))
Summary:

Surprised that JT cannot obtain heat spots [see JT's 1864-11-14]. Describes glasses and lenses used.

Contributor:
John Herschel Project

Herschel10814

From:
Sir John Herschel
To:
William Hartley
Date:
[16 November 1864]
Source of text:
RS:HS 10.166 (C: RS:HS 24.67)
Summary:

Thanks for the beautiful engine-turned patterns; they exceed in beauty anything he has seen before. Should think he would have no difficulty in polishing reflectors.

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

Herschel12734

From:
Sir John Herschel
To:
Few & Co.
Date:
[17 November 1864]
Source of text:
TxU:H/L-0149; Reel 1054
Summary:

As instructed by Charles Babbage on 27 Feb. 1863, JH forwards to Few & Co. recent letter from solicitors T. P. Anderson and J. H. Stonebridge requesting information about funds in Hollier Trust.

Contributor:
John Herschel Project
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