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Babbage, Charles in correspondent 
Herschel, John in correspondent 
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From:
Sir John Herschel
To:
Charles Babbage
Date:
[25 March 1819]
Source of text:
TxU:H/L-0051.4; Reel 1054
Summary:

Made apparatus for showing rings between 'two Tourmalines.' JH's process for making hyposulfurous acid. Praises W. H. Wollaston's analysis of CB's 'Tonquinate.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
1819-7
Source of text:
TxU:H/L-0051.6; Reel 1054
Summary:

Sent JH's paper on mother-of-pearl and paper on hyposulfurous acid to David Brewster. Tell Brewster of JH's discovery of optical structure in crystals of bicarbonate of potash. Would Brewster accept paper from JH enlarging the definition of crystals?

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[10 May 1820]
Source of text:
TxU:H/L-0052; Reel 1054 (C: RS:HS 20.96)
Summary:

CB is 'incurable castle-builder.' Denies that JH falls easily into love. Eradicating 'one hastily conceived & silly passion' has deadened JH's heart. Any future love must follow a long acquaintance and friendship.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[2 July 1821]
Source of text:
TxU:H/L-0053; Reel 1054 (C: RS:HS 20.120)
Summary:

[Theophila] Gwatkin will accept Georgiana Babbage's invitation. Will set date after Gwatkin returns from Baylin. Asks CB to be trustee in JH's marriage settlement.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[6 September 1858]
Source of text:
TxU:H/L-0054; Reel 1054
Summary:

Received another notice from General Reversionary & Trust Society regarding H. J. Hollier. JH asks again to be replaced as trustee for Mary Anne Hollier trust.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[1842?]
Source of text:
RS:HS B27.52
Summary:

Tells CB about a visit by JH and Wolryche Whitmore to the Duke [of ?] to present the case for more government funds for Charles Babbage's calculating machine.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[20 February 1836]
Source of text:
9th Treatise, 202-17
Summary:

Speculates on extinction of species by natural (not miraculous) causes intermediate to Creator. JH's theory of shifting crust over Earth's surface and its subsequent transfer of pressure. Seeks geological primum mobile for volcanoes based on continual deposition and melting of strata. 'All records of former worlds must ultimately perish.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[27 July 1819]
Source of text:
BL Aaa 32292.123
Summary:

JH understands CB to be a candidate for a professorial chair, and JH writes a warm letter of support.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[14 December 1826]
Source of text:
BL Aaa 32293.384
Summary:

Tells CB of the mistake on the certificate for admission [to the R.S.L.?] for Mr. Moreau, which meant it had to be withdrawn. Doubts that reapplication would be successful. Other news from London.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[1832 or earlier]
Source of text:
BL Aaa 37184.161
Summary:

Is arranging a meeting with CB.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[18 May 1846]
Source of text:
BL Aaa 32303.279
Summary:

Urges a visit to Collingwood by CB. Refers to the development of a cypher.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[15 February 1851]
Source of text:
BL Aaa 37194.478
Summary:

CB has 'decyphered' JH's puzzle. JH will not try to puzzle CB again.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[9 December 1870]
Source of text:
BL Aaa 37199.524
Summary:

Thanks CB for receipt of a meteorological work by CB's son [B. H. Babbage], now in Australia. JH says he grows stupider every day and is a 'prisoner in the bonds of bronchitic tyranny.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[20 December 1864]
Source of text:
BL Aaa 32309.184 (ACCS: RS:HS B27.26)
Summary:

Gives CB permission to publish the portions of letters requested by him. JH tells CB that he has responded to John Davy's letter in the PM.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
1] July [1812
Source of text:
RS:HS 2.2 (C: 20.1)
Summary:

Answer to CB's equation. Bring something to discuss at the forthcoming meeting of the Analytical Society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[14 August 1812]
Source of text:
RS:HS 2.4 (C: RS:HS 20.2)
Summary:

Further comment on the calculus equation sent by CB.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[1812]
Source of text:
RS:HS 20.3
Summary:

Sends on part of letter for CB to complete and forward.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[1812-8]
Source of text:
RS:HS 20.4
Summary:

About the mathematical formulation for the summation of any series.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[8 February 1813]
Source of text:
RS:HS 2.6 (C: RS:HS 20.5)
Summary:

Regarding the equations in his memoir on the series of tangents. Queries about the Analytical Society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[25 February 1813]
Source of text:
RS:HS 2.8 (C: RS:HS 20.6)
Summary:

Further equations discussed. Has purchased more books. Regarding the printing of the memoir. [Letter continued on 1813-3-2.]

Contributor:
John Herschel Project