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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

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

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

Herschel3345

From:
Sir John Herschel
To:
John Tyndall
Date:
[21 November 1864]
Source of text:
RS:HS 17.398b (C: 24.69; C: RI 535)
Summary:

Wishes luck but expresses inability to help with new science journal [see JT's 1864-11-18].

Contributor:
John Herschel 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

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

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

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

Herschel4183

From:
Sir John Herschel
To:
William Thomson
Date:
[22 November 1864]
Source of text:
F. James, 'Between Two Scientific Generations: John Herchel's Rejection of the
Summary:

Thanks WT for pageproofs of his work on analytical dynamics. Compliments work on Isaac Newton's view of nature of luminous ether. Gives own views on ether and motion theory of heat.

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

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

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

Herschel5739

From:
Edward William Brayley
To:
Sir John Herschel
Date:
[29 November 1864]
Source of text:
RS:HS 4.228
Summary:

Sends his article on the sun and the British Almanac for 1865. Regarding various current theories relating to the sun. The professorship he applied for has not materialized.

Contributor:
John Herschel Project

Herschel578

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[25 November 1864]
Source of text:
RGO 6.359.540
Summary:

Compares earlier and more recent pound determinations and finds interesting results; wants GA's opinion on the accuracy of his work, as JH wishes to send it to the India committee.

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

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

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

Herschel8626

From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[19 November 1864]
Source of text:
Geological Society
Summary:

Asks RM whether RM thinks any of the geographical work of Karl Ritter should be translated into English.

Contributor:
John Herschel Project
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