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Hunt, Robert in addressee 
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From:
Sir John Herschel
To:
Robert Hunt
Date:
[14 December 1839]
Source of text:
George Eastman House 1.17 (draft: RS:HS 10.81 & C: 22.32)
Summary:

Intrigued by RH's experiments with photographic papers; will buy six sheets of RH's specimens. Admits having conducted numerous experiments himself and asks to include some of RH's results in a forthcoming paper on the subject.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
5] April [1840
Source of text:
George Eastman House, 2.17
Summary:

Hopes that his paper does not anticipate any of RH's work; will share with the R.S.L. any of RH's results. Laments that he is unable to fix the spectral colors on photographic paper. Asks if RH has studied the bromines.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[19 April 1840]
Source of text:
RS:HS 22.49
Summary:

Exchanging further information on several aspects of the photographic process [see RH's 1840-4-15].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[12 May 1840]
Source of text:
George Eastman House, 3.17 (C: RS:HS 22.15)
Summary:

Will forward RH's paper to the R.S.L.; intrigued by RH's results using mercury vapor to produce the image on exposed paper.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[17 August 1840]
Source of text:
RS:HS B26.68
Summary:

Thanks RH for a sample of Daguerreotype paper. Comments on some aspects of the action of 'thermic' rays and 'chemical' rays in photography.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[10 November 1840]
Source of text:
George Eastman House, 4.17 (C: RS:HS 22.70)
Summary:

Does not know anywhere that such processes as RH uses are used for registry work, although the idea is frequently raised.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[10 February 1841]
Source of text:
RS:HS 22.79
Summary:

Has not lately done much work in photography, except to work with paper treated with vegetable substances.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[20 February 1841]
Source of text:
George Eastman House, 5.17
Summary:

Unable to give any specifics concerning Louis Jacques Mandé Daguerre's new photographic process. Discovered that old paper specimens produced a much better representation of the spectrum in its natural colors than those obtained at the date of JH's paper; these results are 'light on a dark ground,' which makes JH more hopeful that colored photography will someday be perfected. Has experimented with vegetable substances.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[21 May 1841]
Source of text:
George Eastman House, 7.17 (C: RS:HS 22.87)
Summary:

Thanks RH for his 'extensive and instructive view on the present state of photography.' Found many interesting results in experimenting with vegetable substances. Surprised by RH's discovery that bi-chromate of potash is a photographic substance; JH nearly achieved this result.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[15 March 1842]
Source of text:
George Eastman House, 12.17
Summary:

Believes that the operative rays in JH's thermographic process are neither 'calorific' nor 'thermal'.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
1842-5
Source of text:
George Eastman House, 10.17 (C: RS:HS 22.117)
Summary:

Some information about Charles Piazzi Smyth. JH needs information about some of RH's photographic paper, which JH has tried but without success.

Contributor:
John Herschel Project
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
From:
Sir John Herschel
To:
Robert Hunt
Date:
1842-9
Source of text:
George Eastman House, 8.17 (C: RS:HS 22.133)
Summary:

Thanks for RH's paper on mineralogy. JH has explored use of mercury together with iron in photography.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[2 December 1842]
Source of text:
George Eastman House, 11.17 (C: RS:HS 22.143)
Summary:

Sends RH a packet of photographs with a description of each type.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[1842-12-9 or later]
Source of text:
RS:HS 25.14.15
Summary:

Is anxious for some means to be developed to get a measurable quantity [preferably by weight] from the action of a beam of light on a surface. JH has been experimenting in photography with 'flouric' compounds.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
12?] December [1842
Source of text:
George Eastman House, 6.17
Summary:

Read John William Draper's papers; although he believes that Draper's instruments are inconsistent, JH feels that they are still important because they are measurable. Decries [L. F.] Moser's skepticism of photography's value, calling it a 'blindfolding to some of the most interesting physical relations that have ever been discovered.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[17 February 1843]
Source of text:
George Eastman House, 15.17 (C: RS:HS 22.147)
Summary:

Clarification of priority to the prismatic analysis of the Daguerreotype photograph; comments on the location of a limiting diaphragm in a camera obscura.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[25 March 1843]
Source of text:
George Eastman House, 13.17 (C: RS:HS 22.150)
Summary:

Some comments about photographic processes and about RH's observations of the heavens [see RH's 1843-3-24].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Robert Hunt
Date:
[17 September 1843]
Source of text:
George Eastman House, 14.17 (C: RS:HS 22.168)
Summary:

Comments on RH's chromatype photographic process and other processes tried by JH.

Contributor:
John Herschel Project
Text Online
From:
Michael Faraday
To:
Robert Hunt
Date:
18 March 1845
Source of text:
SI D MS 554A
Summary:

No summary available.

Contributor:
Faraday Project