Search: Herschel, John in correspondent 
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1840-1849::1840::05 in date 
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Herschel2809

From:
Edward Sabine
To:
Sir John Herschel
Date:
[1 May 1840]
Source of text:
RS:HS 15.89
Summary:

R.S.L. Council approved publication of ES's paper on magnetic observation at sea. Discussions for North American magnetic observatories continue.

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

Herschel10732

From:
Robert Hunt
To:
Sir John Herschel
Date:
[9 May 1840]
Source of text:
RS:HS 10.85
Summary:

Sends his paper for communication to the R.S.L. Will send some more examples later as his camera has developed a defect.

Contributor:
John Herschel Project

Herschel2454

From:
Edward Sabine
To:
Sir John Herschel
Date:
10 May [1840]
Source of text:
RS:HS 15.308
Summary:

[John] Lefroy should replace [Charles] Riddell in Canada. Discusses proposed Norwegian observatory and proposals for various instruments. Navy officers may be helpful observers in colonies.

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

Herschel10733

From:
Robert Hunt
To:
Sir John Herschel
Date:
[16 May 1840]
Source of text:
RS:HS 10.86
Summary:

Returns the photographic drawings of W. H. Fox Talbot with many thanks. Fears for their permanence. Has produced similar pictures himself acting on bromide of silver with hydrocholoric acid. Has had trouble with his periscope lens.

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

Herschel4697

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[17 May 1840]
Source of text:
RS:HS 1.86 (C: RGO 6.463.72)
Summary:

Regarding Prof. Baden Powell's paper on dark bands. Is making catalogues of the moveables of the observatory.

Contributor:
John Herschel Project

Herschel13530

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[18 May 1840]
Source of text:
TxU:H/L-0760.2; Reel 1089
Summary:

Considers paper by [Baden] Powell to be worthless. Sent it to JH today care of Mrs. Stewart.

Contributor:
John Herschel Project

Herschel380

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[18 May 1840]
Source of text:
RGO 6.463.77
Summary:

Responds to JH [see JH's 1840-5-16 or later] indicating to what address GA had sent his reply [see GA's 1840-5-17].

Contributor:
John Herschel Project

Herschel2810

From:
Edward Sabine
To:
Sir John Herschel
Date:
[19 May 1840]
Source of text:
RS:HS 15.90
Summary:

Hopes to meet with JH to discuss some data. Announces that at the Newcastle B.A.A.S. meeting, JH, Humphrey Lloyd, and ES were appointed to a subcommittee. Discusses what James Ross will do on his return from the Cape. Announces the possibility of ten new observatories in Russia.

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

Herschel4698

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[20 May 1840]
Source of text:
RS:HS 1.87 (C: RGO 6.463.80)
Summary:

Concerning prism refraction.

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

Herschel11553

From:
Noel Paymal Lerebours
To:
Sir John Herschel
Date:
[22 May 1840]
Source of text:
RS:HS 11.470
Summary:

Father has died and he has taken over the business. Would like references as to where he can find information on instruments.

Contributor:
John Herschel Project
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