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1840-1849 in date 
Herschel, John in author 
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Herschel8827

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[19 April 1840]
Source of text:
Science Museum Talbt 1/24
Summary:

Sending specimens sent to JH by [Robert] Hunt. Praises Hunt. Has WT received JH's paper ['On the Chemical Action of the Rays of the Solar Spectrum...,' R.S.P.T. (1840), 1-59]? JH moving to Collingwood.

Contributor:
John Herschel Project

Herschel845

From:
Sir John Herschel
To:
Margaret Brodie Herschel
Date:
[23 April 1840]
Source of text:
JHS 3.19f
Summary:

The packing and shipping of goods to Collingwood is complete; JH will now attend to a few final details and then come to Collingwood, having spent the most horrible 'fortnight in my life.'

Contributor:
John Herschel Project

Herschel837

From:
Sir John Herschel
To:
Margaret Brodie Herschel
Date:
[24 April 1840]
Source of text:
JHS 3.19d
Summary:

Mostly about damage to furniture during shipment from Slough to Collingwood.

Contributor:
John Herschel Project

Herschel8828

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[3 May 1840]
Source of text:
Science Museum Talbt 1/25
Summary:

Thanks for excellent pictures WT sent. JH wishes JH had time for further experiments, especially on the 'thermic spectrum.' Praises [Robert] Hunt's results. Recommends experiment to WT.

Contributor:
John Herschel Project

Herschel6057

From:
Sir John Herschel
To:
Francis Baily
Date:
[6 May 1840]
Source of text:
RS:HS 3.182 (C: RS:HS 25.8.27)
Summary:

Would FB deputize for him at the council meeting on Friday as he is unable to attend. Letter from F. W. Bessel regarding 61 Cygni. Has written to G. B. Airy regarding Thomas Maclear's paper.

Contributor:
John Herschel Project

Herschel8272

From:
Sir John Herschel
To:
Elizabeth Drummond [Sr.]
Date:
[12 May 1840]
Source of text:
RS:HS 19.78
Summary:

Just moved [to Collingwood]. Will send information about ED's late son, Thomas Drummond. Recalls Drummond's fame and triangulation work on Irish Survey. Describes invention and first demonstration of Drummond Light.

Contributor:
John Herschel Project

Herschel3946

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

Herschel13512

From:
Sir John Herschel
To:
[John Ellor Taylor]
Date:
[1840 or later]-5-13
Source of text:
TxU:H/L-0748.2; Reel 1089
Summary:

Thanks for series of portraits of members of Ipswich Museum.

Contributor:
John Herschel Project

Herschel378

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[16 May 1840]
Source of text:
RGO 6.463.70
Summary:

Has a problem with the explanation of interference bands produced by mica being placed between the eye and prism-produced dispersion; the explanation is Baden Powell's.

Contributor:
John Herschel Project

Herschel379

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1840-5-16 or later]
Source of text:
RGO 6.463.76
Summary:

Writes to supply GA with an address for a reply to JH's 1840-5-16.

Contributor:
John Herschel Project

Herschel381

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[19 May 1840]
Source of text:
RGO 6.463.78
Summary:

Thanks GA for the time and trouble GA took in writing about interference bands [see GA's 1840-5-17]; JH's wife, Margaret, is making many visits to the dentist.

Contributor:
John Herschel Project

Herschel382

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1840-5-20 or later]
Source of text:
RGO 6.463.81
Summary:

A note agreeing with GA about prism interference [see GA's 1840-5-20].

Contributor:
John Herschel Project

Herschel3402

From:
Sir John Herschel
To:
[R.S.L. Council]
Date:
[21 May 1840]
Source of text:
RS RR.1.188
Summary:

Formally reports on paper by Baden Powell on theory of dark bands found in solar spectrum. G. B. Airy agrees with JH's report.

Contributor:
John Herschel Project

Herschel8273

From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[22 May 1840]
Source of text:
RS:HS 19.79-80 (C: RS:HS 22.52)
Summary:

How to reduce barometer observations and project them in curves. R.S.L. will provide table by H. C. Schumacher for this purpose. How to obtain 'law of decimal oscillations' for each station. WB's name will be affixed to results. JH needs receipt for observations, which belong to South African Literary and Philosophical Society.

Contributor:
John Herschel Project

Herschel3527

From:
Sir John Herschel
To:
[John William Lubbock]
Date:
[31 May 1840]
Source of text:
RS LUB.H.356a
Summary:

Will be unable to attend Council meeting, but comments on issue to be discussed of whether R.S.L. should do anything respecting observatory at Hammerfest (North Cape).

Contributor:
John Herschel Project

Herschel11590

From:
Sir John Herschel
To:
John William Lubbock
Date:
[31 May 1840]
Source of text:
RS:HS 22.53
Summary:

R.S.L. business about an observatory at the North Cape in Sweden.

Contributor:
John Herschel Project

Herschel9111

From:
Sir John Herschel
To:
William Whewell
Date:
[1840-6]
Source of text:
TC, Camb. Add. Ms.a.20741 (RS:HS 22.47 & 22.36)
Summary:

Gives JH's new address in Hawkhurst. Bring Mr. Bunt's planetarium when WW comes to Hawkhurst. Announces new photographic results.

Contributor:
John Herschel Project

RS-MM-001100

From:
John Frederick William Herschel
To:
James David Forbes
Date:
4 June 1840
Source of text:
MM/16/137, Royal Society
Summary:

No summary available.

Contributor:
Royal Society

Herschel6058

From:
Sir John Herschel
To:
Francis Baily
Date:
[8 June 1840]
Source of text:
RS:HS 3.183 (C: RS:HS 25.8.28)
Summary:

Invitation to Hawkhurst. Has plenty of R.S.L. work to keep him from his observational work. Question of a new observatory. Has had letter from Wilhelm Struve regarding the fifteen-inch object glass.

Contributor:
John Herschel Project

Herschel3131

From:
Sir John Herschel
To:
James David Forbes
Date:
[10 June 1840]
Source of text:
St. Andrews 34 (Adraft: TxU:H/L-0158 & -0145.2; Reel 1054 & C: RS:HS 22.44)
Summary:

R.S.L. will deviate from its intellectual purpose whenever it meddles in practical observations. Proper role for R.S.L. is to suggest goals and methods and to reward discoveries. Recommends discontinuing meteorological observations at Somerset House; other stations now provide better data. If R.S.L. insists on establishing a meteorological register, JH suggests one like that of J. F. Daniell.

Contributor:
John Herschel Project
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