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Herschel, John in author 
Babbage, Charles in addressee 
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Herschel5143

From:
Sir John Herschel
To:
Charles Babbage
Date:
[26 April 1818]
Source of text:
RS:HS 2.92 (C: RS:HS 20.54)
Summary:

Please send the third volume of J. E. Montucla's Histoire de mathématiques. Is running into difficulties with his history of mathematics owing to lack of translations. Regarding kaleidoscopes. Has been reading David Brewster's experiments on Mother of pearl.

Contributor:
John Herschel Project

Herschel5145

From:
Sir John Herschel
To:
Charles Babbage
Date:
[16 May 1818]
Source of text:
RS:HS 2.94 (C: RS:HS 20.55)
Summary:

Thanking him for the third volume of J. E. Montucla's Histoire de mathématiques. Gives functional equations for his comments. Is afraid that he will not be able to visit Cornwall this summer.

Contributor:
John Herschel Project

Herschel12627

From:
Sir John Herschel
To:
Charles Babbage
Date:
[9 November 1818]
Source of text:
RS:HS 2.97 (C: RS:HS 20.57 & TxU:H/L-0051.1; Reel 1054 inc)
Summary:

Welcome back to London. Explain CB's demonstration of 'theorem in transcendental arithmetic.' JH's observations of 'new acid' [hyposulfurous] and optical phenomena in 'chrystals of nitre.'

Contributor:
John Herschel Project

Herschel12628

From:
Sir John Herschel
To:
Charles Babbage
Date:
[2 December 1818]
Source of text:
TxU:H/L-0051.2; Reel 1054
Summary:

Cannot meet CB in London this week. Has verified composition of [hyposulfurous] acid. Encloses crystal of 'sulpho=sulphite of lime.'

Contributor:
John Herschel Project

Herschel5151

From:
Sir John Herschel
To:
Charles Babbage
Date:
[2 December 1818]
Source of text:
RS:HS 2.101 (C: RS:HS 20.59)
Summary:

Thanks CB for his advice about applying for the post of Astronomer Royal when it becomes vacant, but does not think himself qualified. Will not be able to come to London this weekend. Regarding his new acid.

Contributor:
John Herschel Project

Herschel12629

From:
Sir John Herschel
To:
Charles Babbage
Date:
[6 December 1818]
Source of text:
TxU:H/L-0051.3; Reel 1054
Summary:

Fifth [1817] edition of Thomas Thomson's System of Chemistry shows previous discovery of JH's 'new acid,' but its reported composition is wrong.

Contributor:
John Herschel Project

Herschel5153

From:
Sir John Herschel
To:
Charles Babbage
Date:
[6 December 1818]
Source of text:
RS:HS 2.103 (C: RS:HS 20.60)
Summary:

Thanking CB for CB's further remarks on the Greenwich post. Further regarding his new acid.

Contributor:
John Herschel Project

Herschel5154

From:
Sir John Herschel
To:
Charles Babbage
Date:
[12 December 1818]
Source of text:
RS:HS 2.104 (C: RS:HS 20.61)
Summary:

Remarks on CB's article on analysis and the examples used. Hopes to see him at Christmas; then they can talk about the projected visit to Paris.

Contributor:
John Herschel Project

Herschel5156

From:
Sir John Herschel
To:
Charles Babbage
Date:
[20 December 1818]
Source of text:
RS:HS 2.106
Summary:

Hopes CB will visit Slough soon to discuss the proposed trip to Paris. Gives a sketch of his investigations on theorems connected with series.

Contributor:
John Herschel Project

Herschel5415

From:
Sir John Herschel
To:
Charles Babbage
Date:
[1819?]
Source of text:
RS:HS 2.362 (C: RS:HS 20.67)
Summary:

Cannot accompany CB to Deptford because JH busy with James South. Mentions the 'Pearsonian dinner,' 'plagi[h]edral' crystals, and a letter by Wilhelm Olbers.

Contributor:
John Herschel Project

Herschel5159

From:
Sir John Herschel
To:
Charles Babbage
Date:
[17 February 1819]
Source of text:
RS:HS 2.109 (C: RS:HS 20.65)
Summary:

Would he please forward the letters and papers which he left behind.

Contributor:
John Herschel Project

Herschel5160

From:
Sir John Herschel
To:
Charles Babbage
Date:
[19 February 1819]
Source of text:
RS:HS 2.110 (C: RS:HS 20.66)
Summary:

Is anxious to hear how his wounds are progressing. Will not be able to come to town yet owing to various circumstances. New chemical experiments.

Contributor:
John Herschel Project

Herschel12630

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

Herschel5163

From:
Sir John Herschel
To:
Charles Babbage
Date:
[25 March 1819]
Source of text:
RS:HS 2.113 (C: RS:HS 20.68)
Summary:

Regarding the disposal of the tourmaline. Address of his cousin. Drawing and description of the apparatus for experiments on tourmaline. Chemical experiments.

Contributor:
John Herschel Project

Herschel5166

From:
Sir John Herschel
To:
Charles Babbage
Date:
[8 May 1819]
Source of text:
RS:HS 2.116 (C: RS:HS 20.69 & C inc: TxU:H/L-0051.5; Reel 1054)
Summary:

Answers CB's question on the equation. Hopes to see him in London shortly. Chemical experiments.

Contributor:
John Herschel Project

Herschel12631

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

Herschel5169

From:
Sir John Herschel
To:
Charles Babbage
Date:
1819-7
Source of text:
RS:HS 2.119 (C: RS:HS 20.72)
Summary:

Wishing CB success in his efforts to obtain the position of professor at Edinburgh. Relates details of his recent experiments with bicarbonate of potash.

Contributor:
John Herschel Project

Herschel1547

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

Herschel5171

From:
Sir John Herschel
To:
Charles Babbage
Date:
1819-[9]
Source of text:
RS:HS 2.121 (C: RS:HS 20.73)
Summary:

Sorry to hear of his failure at Edinburgh. Inviting him to Slough. Enquiring about the people CB met at Edinburgh.

Contributor:
John Herschel Project

Herschel5173

From:
Sir John Herschel
To:
Charles Babbage
Date:
[13 October 1819]
Source of text:
RS:HS 2.123 (C: RS:HS 20.75)
Summary:

Will not be in town until Tuesday afternoon. Has been speculating on a means of telegraphic communication between himself and CB.

Contributor:
John Herschel Project
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