Search: Herschel, John in correspondent 
Talbot, William Henry Fox in correspondent 
Herschel, John in addressee 
letter in document-type 
No in transcription-available 
1830-1839::1839 in date 
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From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[25 January 1839]
Source of text:
RS:HS 17.277
Summary:

Will give a paper on fixing the image formed by the camera obscura to R.S.L. and wants to review it with JH first.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[28 January 1839]
Source of text:
RS:HS 17.278
Summary:

JH is indisposed, so WT will come to Slough to review paper [see WT's 1839-1-25]. Asks JH about appropriate curve on lenses for camera obscura for 2-foot focus.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[29 January 1839]
Source of text:
RS:HS 17.279a
Summary:

Has received urgent request from Athenaeum to allow them to publish paper on 'Photogenic Drawing' before it is read to R.S.L. in light of announcement of the 'Parisian invention.'

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[2 February 1839]
Source of text:
RS:HS 17.280
Summary:

More about paper being published in both the R.S.P.T. and Athenaeum.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[8 February 1839]
Source of text:
RS:HS 17.281a
Summary:

Questions JH's intent to display 'photogenic drawings' to R.S.L.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[11 February 1839]
Source of text:
RS:HS 17.282
Summary:

Wants to withhold description of 'developing' process until it is perfected to obviate others using it. Also refers to second process to make 'positive' and 'negative.'

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[14 February 1839]
Source of text:
RS:HS 17.283
Summary:

Some comments on JH's light and photography experiments, especially effects of different kinds of glass and fixing with ferrocyanate.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[19 February 1839]
Source of text:
RS:HS 17.284
Summary:

Describes mediocre results obtained using ferrocyanate of potash for fixing image. Mentions some other methods, including his favorite, common salt. Asks JH to keep these secret.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[20 February 1839]
Source of text:
RS:HS 17.285
Summary:

Finally had success washing with ferrocyanate. Wants to present note of 'his' processes to R.S.L. and so to the world.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[27 February 1839]
Source of text:
RS:HS 17.286
Summary:

Wishes to communicate to J. B. Biot, and so to Academie des sciences, JH's two 'beautiful' fixing methods, by hyposulfite and ferrocyanate.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[1 March 1839]
Source of text:
RS:HS 17.287
Summary:

Enlarges upon his method of using salt as photographic fixer; then asks JH to explain the chemistry thereof. Has tried Louis Daguerre's fixing process without success.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[15 March 1839]
Source of text:
RS:HS 17.288
Summary:

Further chemicals used for fixing, including bromide potash.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[21 March 1839]
Source of text:
RS:HS 17.289
Summary:

Comments on Louis Daguerre's use of muriatic ether, and encloses a photograph of hand writing.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[28 March 1839]
Source of text:
RS:HS 17.290
Summary:

Comments on a number of chemicals used in photography, as well as referring to JH's process of making 'enlargements.'

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[29 March 1839]
Source of text:
RS:HS 17.291
Summary:

Consists mostly of a transcription of two short notes from J. B. Biot to JH by way of WT.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[10 April 1839]
Source of text:
RS:HS 17.292
Summary:

Sends a sample picture fixed by use of iodine [potash].

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[27 April 1839]
Source of text:
RS:HS 17.293
Summary:

More photography comments. Problems with use of hyposulfite fixer. Superiority of English over Daguerreotype in being able to make copies.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[2 July 1839]
Source of text:
RS:HS 17.294
Summary:

Sends JH a positive copy and a transparency. Remarks on JH's use of muriate of lead and asks JH to explain chemistry of it.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[19 July 1839]
Source of text:
RS:HS 17.295
Summary:

Confused by an 'unfixed' photo from JH in which the image shows different effects from different colors of the spectrum. Also other comments on photography.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[8 September 1839]
Source of text:
RS:HS 17.296
Summary:

Sends some samples of photography made with a solar microscope, and comments briefly on the Daguerreotype.

Contributor:
John Herschel Project