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1830-1839 in date 
Talbot, William Henry Fox in addressee 
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Herschel14848

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[27 March 1839]
Source of text:
NMPFT 1937-4842
Summary:

Describes method of varying the size of photographic images. Praises Talbot's light sensitive paper and suggests improvements regarding it. Complains about persons too ready to seek a patent.

Contributor:
John Herschel Project

Herschel8819

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[22 April 1839]
Source of text:
Science Museum Talbt 1/16 (C: RS:HS 22.11)
Summary:

Comments on several approaches to fixing images on paper, especially using pure water as a fixing agent. Has developed a new sensitive paper but is keeping it secret until perfected. Is leaving for Continent on 1 May.

Contributor:
John Herschel Project

Herschel8820

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[27 April 1839]
Source of text:
Science Museum Talbt 1/17 (draft 'altered': RS:HS 17.293a & C: RS:HS 22.12)
Summary:

JH reports his discovery of a highly sensitive paper. Tint continues to deepen with time, as bromine does not. Not prepared to reveal process at present. Is off to Paris.

Contributor:
John Herschel Project

Herschel8821

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[9 May 1839]
Source of text:
Science Museum Talbt 1/18
Summary:

Just visited L. J. M. Daguerre. Praises his images as 'miraculous' and also Daguerre's times of exposure. Daguerre puts his images on 'thin sheets of plated copper.'

Contributor:
John Herschel Project

Herschel8822

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[24 June 1839]
Source of text:
Science Museum Talbt 1/19 (ACCS: RS:HS 25.5.13 & C: TxU:H/L-0476; Reel 1055)
Summary:

Admires L. J. M. Daguerre's process, but hopes to see paper become dominant medium for photographs. Describes new paper JH developed. [Letter continues 6 July.] Experiment with fixed lines in chemical spectra; shows sensitivity of ultraviolet light.

Contributor:
John Herschel Project

Herschel8823

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[7 July 1839]
Source of text:
Science Museum Talbt 1/20 (ACCS: RS:HS 25.5.14 & C: TxU:H/L-0477; Reel 1055)
Summary:

Recounts experiments with chemicals, spectra, and photographic paper.

Contributor:
John Herschel Project

Herschel8824

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[10 September 1839]
Source of text:
Science Museum Talbt 1/21 (ACCS: RS:HS 25.5.18 & C: TxU:H/L-0478; Reel 1055)
Summary:

Has succeeded in producing a 'photograph on glass.' Describes process and also JH's experiment photographing spectra.

Contributor:
John Herschel Project

Herschel8825

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[4 December 1839]
Source of text:
Science Museum Talbt 1/22
Summary:

Discusses L. J. M. Daguerre's patent application, JH's experiments in making light sensitive paper, and JH's determination to give up photographic researches so as to return to preparation of JH's Cape Results.

Contributor:
John Herschel Project
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