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Herschel10987

From:
Manuel John Johnson
To:
Sir John Herschel
Date:
[15 April 1839]
Source of text:
RS:HS 10.333
Summary:

Was grateful for JH's communication and is pleased his catalogue met JH's approval.

Contributor:
John Herschel Project

Herschel10628

From:
R. W. Howard-Vyse
To:
Sir John Herschel
Date:
[15 April 1839]
Source of text:
RS:HS 10.9
Summary:

Is grateful for JH's goodness regarding the pyramids. Gives measurements of the pyramids and would be grateful for any comments JH can make regarding the significance of these measurements.

Contributor:
John Herschel Project

Herschel3457

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[16 April 1839]
Source of text:
RS MM.16.148
Summary:

Encloses graph of C. F. Gauss's magnetic observations.

Contributor:
John Herschel Project

Herschel4689

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[16 April 1839]
Source of text:
RS:HS 1.78 (C: RGO 6.245.65)
Summary:

Knows nothing about Kew Observatory, but has heard of the name of the present office holder there.

Contributor:
John Herschel Project

RS-MM-001110

From:
John Frederick William Herschel
To:
George Biddell Airy
Date:
16 April 1839
Source of text:
MM/16/148, Royal Society
Summary:

No summary available.

Contributor:
Royal Society

DCP-LETT-506

From:
Charles Robert Darwin
To:
William Whewell
Date:
16 Apr [1839]
Source of text:
Trinity College Library, Cambridge (Add c 88: 6)
Summary:

Thanks WW for wedding gift.

Expresses admiration for his History of the inductive sciences [1837].

Contributor:
Darwin Correspondence Project
Text Online

Faraday1160

From:
Alfred Swaine Taylor
To:
Michael Faraday
Date:
17 April 1839
Source of text:
IEE MS SC 2
Summary:

No summary available.

Contributor:
Faraday Project

Herschel11362

From:
Humphrey Lloyd
To:
Sir John Herschel
Date:
[17 April 1839]
Source of text:
RS:HS 11.270
Summary:

Has ordered the instruments for the Van Diemen's Land observatory. Is uncertain regarding the third magnetometer; T. C. Robinson's has not yet been tested. Will order a dip circle from Paris.

Contributor:
John Herschel Project

Herschel14791

From:
Thomas Grubb
To:
Sir John Herschel
Date:
[17 April 1839]
Source of text:
TxU:H/M-1194; Reel 1060
Summary:

Encloses description of two magnetometers approved by Humphrey Lloyd, and proposes to make these for £70.

Contributor:
John Herschel Project
Text Online

Faraday1161

From:
William Trull
To:
Michael Faraday
Date:
17 April 1839
Source of text:
Trull (1839), 418-9
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

HENSLOW-1230

From:
J. S. Henslow
To:
William Hutton
Date:
18 April 1839
Source of text:
American Philosophical Society Library William Hutton Papers B:H978
Summary:

No summary available.

Contributor:
Henslow Correspondence Project
Text Online

Faraday1162

From:
Michael Faraday
To:
John Thomas Cooper
Date:
18 April 1839
Source of text:
RI MS
Summary:

No summary available.

Contributor:
Faraday Project

Herschel2759

From:
Edward Sabine
To:
Sir John Herschel
Date:
[19 April 1839]
Source of text:
RS:HS 15.39
Summary:

Reports that the original cost estimate of the magnetometers was low and that other instruments have been ordered. Asks to borrow clocks from the R.S.L. and the R.A.S. Has written to Major Jarvis for observers for the East Indies observatories but expects none will be found.

Contributor:
John Herschel Project

Herschel2760

From:
Edward Sabine
To:
Sir John Herschel
Date:
[19 April 1839]
Source of text:
RS:HS 15.40
Summary:

Suggests changes in the memorial regarding fixed observatories.

Contributor:
John Herschel Project

Herschel8558

From:
Sir John Herschel
To:
James Booth
Date:
[19 April 1839]
Source of text:
BostonPubLib Ch.I.6.34
Summary:

Translation of a work by C. F. Gauss and Wilhelm Weber will provide the information requested. Hopes [William Cranch] B[ond] will participate in magnetic observations. Explains 'Copper Dampers.'

Contributor:
John Herschel Project
Text Online

Faraday1163

From:
William Havell
To:
Michael Faraday
Date:
19 April 1839
Source of text:
IEE MS SC 2
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday1164

From:
Christian Friedrich Schoenbein
To:
Michael Faraday
Date:
21 April 1839
Source of text:
UB MS NS 330
Summary:

No summary available.

Contributor:
Faraday Project

Herschel11586

From:
Sir John Herschel
To:
Humphrey Lloyd
Date:
[21 April 1839]
Source of text:
RS:HS 22.10
Summary:

Responds positively to HL's 1839-4-17, and adds some additional comments.

Contributor:
John Herschel Project

Herschel2761

From:
Edward Sabine
To:
Sir John Herschel
Date:
[22 April 1839]
Source of text:
RS:HS 15.41
Summary:

Favors C. F. Gauss's theory of two magnetic poles, provided it satisfies the data. Office of the Artillery at Woolwich plans to 'furnish a set of instruments by private subscription.' Suggests a staff officer be appointed for the correspondence between observatories. Worries that the East Indies observatory will fail.

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
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