Search: Herschel, John in correspondent 
Unidentified in correspondent 
1830-1839::1839 in date 
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Herschel13409

From:
Sir John Herschel
To:
Unidentified
Date:
1839
Source of text:
TxU:H/L-0642; Reel 1089
Summary:

Will send two photometers and three-year supply of paper to [?]. One goes to J. C. Ross and one to F. Eardley Wilmot at Cape of Good Hope. Instructions for using photometers. Hopes [?] Robinson forwarded actinometers to Woolwich as JH directed. These should be checked at St. Helena. Instruction for using actinometers. Sent report to Humphrey Lloyd at B.A.A.S. Returns [?]'s Daguerre newspaper containing 'impudent notice about M. Pambour and his great Wheels.'

Contributor:
John Herschel Project

Herschel7362

From:
Sir John Herschel
To:
Unidentified
Date:
1839
Source of text:
RAS:JH Archive 4/2.3, 2.9, 2.10, and 2.13 (all verso); Reel 7
Summary:

JH's experiments to find compounds suitable for photography. Accidental discovery of effect of 'nitrate of Silver.' Note of 22 Jan. from Francis Beaufort alerted JH to L. J. M. Daguerre's secret processes and W. H. F. Talbot's experiments.

Contributor:
John Herschel Project

Herschel7399

From:
Sir John Herschel
To:
Unidentified
Date:
[1839]
Source of text:
RAS:JH Archive 5/4.6 verso; Reel 8
Summary:

Fourth observatory, at Van Diemen's Land [Tasmania], will be conducted by J. H. Kay, to be landed from one of vessels [Terror and Erebus] bound for Antarctica. This vessel will also carry observers and instruments for stations at St. Helena and Cape.

Contributor:
John Herschel Project

Herschel3029

From:
Sir John Herschel
To:
Unidentified
Date:
2] February [1839
Source of text:
unknown
Summary:

Mentions visit of 1 Feb. 1839 from W. H. Fox Talbot. Reports that JH has now 'accomp[lishe]d the whole problem [of photography].' Describes JH's recent results.

Contributor:
John Herschel Project

Herschel4390

From:
Unidentified
To:
Sir John Herschel
Date:
[4 April 1839]
Source of text:
Harvard: Houghton
Summary:

Asks JH if he has thought of compiling William Herschel's works.

Contributor:
John Herschel Project

Herschel13408

From:
Sir John Herschel
To:
Unidentified
Date:
[6 June 1839]
Source of text:
TxU:H/L-0641; Reel 1089
Summary:

Departure of J. C. Ross for Antarctic expedition is approaching. Hopes that Admiralty will soon authorize R.S.L. to assist Ross in preparing instruments and coordinating global observations.

Contributor:
John Herschel Project
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