Search: Herschel, John in correspondent 
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letter in document-type 
Airy, George Biddell in addressee 
1840-1849::1849 in date 
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Herschel12

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[8 March 1849]
Source of text:
RGO 6.160.78
Summary:

Tells GA about the internal counterpoise system in use in some German telescope mountings, and includes a diagram; JH knows nothing about chilling speculum metal [see GA's 1849-3-7].

Contributor:
John Herschel Project

Herschel138

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[29 March 1849]
Source of text:
RGO 6.694.250
Summary:

Some concerns about GA's intent of attaching magnetic and meteorological observations to the R.A.S.'s Astronomical Observations [see GA's 1849-3-28].

Contributor:
John Herschel Project

Herschel335

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[29 March 1849]
Source of text:
RGO 6.465.26
Summary:

Asks GA if he knows of any rules or pitfalls in calculating time from earlier times [even B.C.] to the present.

Contributor:
John Herschel Project

Herschel344

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[5] April 1849
Source of text:
RGO 6.231.396
Summary:

Responds to GA's 1849-4-4, and sends the key.

Contributor:
John Herschel Project

Herschel345

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[9 April 1849]
Source of text:
RGO 6.231.176
Summary:

Is making a case for JH's priority claims with regard to the means of determining double star orbits, in conflict with Yvon Villarceau.

Contributor:
John Herschel Project

Herschel347

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[19 April 1849]
Source of text:
RGO 6.231.181
Summary:

Extended comments about some of GA's statements in GA's abstract of Yvon Villarceau's papers on double stars [see GA's 1849-4-11].

Contributor:
John Herschel Project

Herschel307

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[25 June 1849]
Source of text:
RGO 6.57.151
Summary:

A number of copies of the Cape Results were sent out, including one to Charles Ludwig Littrow [see GA's 1849-6-22]; JH will now try to trace the books whereabouts.

Contributor:
John Herschel Project

Herschel91

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[24 October 1849]
Source of text:
RGO 6.142.149a
Summary:

JH's wife, Margaret, is writing to Mrs. Dawes and will ask about the telescope [see GA's 1849-10-23].

Contributor:
John Herschel Project

Herschel210

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[28 October 1849]
Source of text:
RGO 6.248.132 (drafts RS:HS 1.218 & 23.74)
Summary:

Has heard nothing beyond what GA has said [see GA's 1849-9-25], but agrees with GA's assessment of the situation.

Contributor:
John Herschel Project
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