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Herschel, John in author 
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Herschel12622

From:
Sir John Herschel
To:
Charles Babbage
Date:
[26 January 1814]
Source of text:
TxU:H/L-0047; Reel 1054
Summary:

Chemical news: decomposition of 'sulphuret of carbon' by J. J. Berzelius and Alexander Marcet. Analysis of 'azotane' and discovery of 'iode' by Humphry Davy. Congratulations on results of CB's examination.

Contributor:
John Herschel Project

Herschel12623

From:
Sir John Herschel
To:
Charles Babbage
Date:
[4 August 1814]
Source of text:
TxU:H/L-0048; Reel 1054
Summary:

Feigned reproach for CB's return to 'the Analytics.' Inquires about CB's 'Devonshire Ghost at Chudleigh.' Results of JH's chemistry experiments. Derides scientists who promote theory of 'akasch' as the one and only form of matter. Met Alexander Marcet in Greenwich.

Contributor:
John Herschel Project

Herschel12624

From:
Sir John Herschel
To:
Charles Babbage
Date:
[20 September 1814]
Source of text:
RS:HS 2.30 (C: RS:HS 20.19 & TxU:H/L-0049.1; Reel 1054)
Summary:

Gratitude for CB's friendship. Chemical supplies and instruments. Describes synthesis of 'Sulphurane' [S2Cl2] and other experiments. Theories of combustion and acids. [Letter continued on 1813-9-21:] JH avidly studying law, against father's wishes.

Contributor:
John Herschel Project

Herschel12625

From:
Sir John Herschel
To:
Charles Babbage
Date:
[25 October 1814]
Source of text:
TxU:H/L-0049.2; Reel 1054
Summary:

CB has founded 'a calculus totally new and immensely powerful.'

Contributor:
John Herschel Project

Herschel12626

From:
Sir John Herschel
To:
Charles Babbage
Date:
[23 March 1815]
Source of text:
TxU:H/L-0050; Reel 1054
Summary:

Attending E. D. Clarke's mineralogy lectures. JH's analysis of dioptase.

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

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

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

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

Herschel12697

From:
Sir John Herschel
To:
David Brewster
Date:
[11 January 1819]
Source of text:
TxU:H/L-0110; Reel 1054
Summary:

Mr. Murray will bring to DB two papers by JH, one on hyposulfurous acid and one on mathematical analysis, plus requested abstract of JH's and William Herschel's 'last papers' in R.S.P.T.

Contributor:
John Herschel Project

Herschel13188

From:
Sir John Herschel
To:
William Whewell
Date:
[12 August 1818]
Source of text:
TxU:H/L-0496; Reel 1055
Summary:

Grateful for WW's comments on investigations of [Simon] Stevin. JH's work on polarization of light. Discovery of multiple axes of polarization was preempted by David Brewster. Diagrams polarization of niter crystals and Iceland spar.

Contributor:
John Herschel Project

Herschel13207

From:
Sir John Herschel
To:
Mary Pitt Herschel
Date:
[12 January 1819]
Source of text:
TxU:H/L-0514.2; Reel 1053
Summary:

Will sail tomorrow for Calais. Could not find Mr. Armstrong in Dover.

Contributor:
John Herschel Project

Herschel13208

From:
Sir John Herschel
To:
Mary Pitt Herschel
Date:
[17 January 1819]
Source of text:
TxU:H/L-0514.3; Reel 1053
Summary:

Arrival in France. Travel companions. JH and Charles Babbage will go to Institute tomorrow to visit J. B. Biot, S. D. Poisson, and other mathematicians.

Contributor:
John Herschel Project

Herschel13344

From:
Sir John Herschel
To:
William Herschel
Date:
[1814-2?]
Source of text:
TxU:H/L-0546.1; Reel 1053
Summary:

Working in law office of [F. W.?] Sanders. Attended R.S.L. last night. T. W. Hornbuckle offered JH position as subtutor at St. John's College, but JH declined. Describes paper on minerals that JH submitted through E. D. Clarke to Geological Society. Charles Babbage just made creative mathematical discovery.

Contributor:
John Herschel Project

Herschel13345

From:
Sir John Herschel
To:
William Herschel
Date:
[1811?]-23
Source of text:
TxU:H/L-0546.2; Reel 1053
Summary:

Copy of JH's midsummer examination questions—17 on Greek drama, 22 on Mechanics—at St. John's College. Currently reading P. S. Laplace's Système du monde, which confirms WH's theory of galaxy formation. T. W. Hornbuckle reports that money has been received from Bruce & Co.

Contributor:
John Herschel Project

Herschel13346

From:
Sir John Herschel
To:
William Herschel
Date:
[4 October 1811]
Source of text:
TxU:H/L-0547; Reel 1053
Summary:

Duties at St. John's College. James Grahame's father is arriving from Glasgow. [James] Wood is working to get Grahame into college. Ask cousin [Mary Baldwin] for address for Mr. Rogers. Recalls JH's summer vacation.

Contributor:
John Herschel Project

Herschel13347

From:
Sir John Herschel
To:
William Herschel
Date:
[16 November 1811]
Source of text:
TxU:H/L-0548; Reel 1053
Summary:

JH's hypothesis on nebular vortex and formation of solar system. Has other ideas about molecular forces and comet tails, but will wait to learn whether WH wants to hear them. JH burned over 100 pages of notes on these speculations. Will return to Slough in mid-December.

Contributor:
John Herschel Project

Herschel13348

From:
Sir John Herschel
To:
William Herschel
Date:
[5 February 1812]
Source of text:
TxU:H/L-0549; Reel 1053
Summary:

Describes JH's public Latin examination in algebra yesterday. James Grahame and sister were dangerously ill, but Grahame returned to Cambridge. [Addendum:] Newspaper clipping naming students (including JH) who received B.A. degrees at Cambridge on 16 Jan. 1813.

Contributor:
John Herschel Project

Herschel13349

From:
Sir John Herschel
To:
William Herschel
Date:
[1 December 1812]
Source of text:
TxU:H/L-0550; Reel 1053
Summary:

Two weeks of examinations begin tomorrow. Experiments writing with glass pen. Describes glassmaker's methods. Suggests application to micrometers.

Contributor:
John Herschel Project
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