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Herschel4720

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[21 September 1842]
Source of text:
RS:HS 1.110 & 22.135
Summary:

Reply to GA's letter on Charles Babbage's calculating machine.

Contributor:
John Herschel Project

Herschel4721

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[22 September 1842]
Source of text:
RS:HS 1.111 (C: RGO 6.340.342)
Summary:

Robinsons (Devonshire St.) have offered their standard Troy pound, together with its history for £20-0-0. [JH has added notes from his reply regarding the present whereabouts of the various Troy pounds.]

Contributor:
John Herschel Project

Herschel4722

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[22 September 1842]
Source of text:
RS:HS 1.112 (C: RGO 6.427.71)
Summary:

Further remarks on his letter concerning Charles Babbage's calculating machine (see GA's 1842-9-16) in order to clarify JH's mind.

Contributor:
John Herschel Project

Herschel8292

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[22 September 1842]
Source of text:
RS:HS 19.97
Summary:

Must complete graphs of barometer curves before B.A.A.S. meeting. Did JH mistakenly include 1837 Bogota Almanac in barometer observations?

Contributor:
John Herschel Project

Herschel537

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[23 September 1842]
Source of text:
RGO 6.340.343
Summary:

Gives GA some accounting of standard weights in Britain, and feels that it would be worth acquiring Robinson estate weight [see GA's 1842-9-22].

Contributor:
John Herschel Project

Herschel4723

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[26 September 1842]
Source of text:
RS:HS 1.113 (C: RGO 6.427.72)
Summary:

Encloses the Chancellor of the Exchequer's letter concerning Charles Babbage's calculating machine.

Contributor:
John Herschel Project

Herschel7325

From:
John William Draper
To:
Sir John Herschel
Date:
[26 September 1842]
Source of text:
RS:HS 6.502
Summary:

Sending a Daguerreotype impression of the spectrum. Comments on this. Is publishing a work on the chemical rays.

Contributor:
John Herschel Project

Herschel8293

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[26 September 1842]
Source of text:
RS:HS 19.98
Summary:

Sends two dozen more papers on barometer graphs. Must have all papers on subject by January. Pleased with WB's lunar observations.

Contributor:
John Herschel Project

Herschel3676

From:
Richard Sheepshanks
To:
Sir John Herschel
Date:
[27 September 1842]
Source of text:
RS:HS 16.19
Summary:

F. W. A. Argelander has requested the R.A.S. to pledge itself to publish one of his writings. RS notes that it is a rule of the R.A.S. not to do this, but rules can be broken if there is 'sufficient advantage.' Suggests Argelander's request be granted and that JH write him.

Contributor:
John Herschel Project

Herschel1670

From:
Alfred Smee
To:
Sir John Herschel
Date:
[29 September 1842]
Source of text:
RS:HS 16.156
Summary:

Explains how AS first learned of various compound salts of iron from medical writings.

Contributor:
John Herschel Project

Herschel9130

From:
Sir John Herschel
To:
William Whewell
Date:
[29 September 1842]
Source of text:
TC, Camb. Add. Ms.a.20755 (C: RS:HS 22.136)
Summary:

Congratulates WW on a testimonial held in WW's honor in Lancaster. Reports the birth of JH's sixth daughter [Julia].

Contributor:
John Herschel Project
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