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Wallace, William in correspondent 
Wallace, William in author 
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From:
William Wallace
To:
Sir John Herschel
Date:
[31 July 1815]
Source of text:
RS:HS 18.21
Summary:

Sends paper on fluxions written for Edinburgh Encyclopaedia. Uses new formulas, dispensing with binomial theorem. Brings logarithmic and exponential formulae within power of common algebraic processes.

Contributor:
John Herschel Project
From:
William Wallace
To:
Sir John Herschel
Date:
[28 October 1817]
Source of text:
RS:HS 18.22
Summary:

Accepts invitation to visit Slough and meet Charles Babbage. [Thomas] Leybourn may accompany WW. Seeking area of conic sections.

Contributor:
John Herschel Project
From:
William Wallace
To:
Sir John Herschel
Date:
[16 March 1824]
Source of text:
unknown
Summary:

Please recommend London instrument makers to supply new Edinburgh observatory. Josef Fraunhofer was asked to make only lens for transit instrument, but wants to make entire instrument. [JH annotation: Recommended Fraunhofer for entire transit instrument and Robert Molyneux for clock.]

Contributor:
John Herschel Project
From:
William Wallace
To:
Sir John Herschel
Date:
[5 October 1825]
Source of text:
RS:HS 18.24
Summary:

Introduces Dionysius Lardner, author of system of algebraic geometry, visiting England.

Contributor:
John Herschel Project
From:
William Wallace
To:
Sir John Herschel
Date:
[1 December 1825]
Source of text:
RS:HS 18.25
Summary:

Received volume on double stars by JH and James South. Followed JH's advice, ordered instruments from Germany. Asked Josef Fraunhofer to design transit instrument to fit pillars designed by Edward Troughton. Quotes Fraunhofer's response [in French] that pillars should be moved to accommodate his instrument. David Brewster anxious for JH to answer last letter.

Contributor:
John Herschel Project
From:
William Wallace
To:
Sir John Herschel
Date:
[3 February 1829]
Source of text:
RS:HS 18.26
Summary:

Thomas Henderson will visit London and inform JH of events at Edinburgh Observatory. Will WW's paper on instrument for multiplication interfere with Charles Babbage's proposed machine?

Contributor:
John Herschel Project
From:
William Wallace
To:
Sir John Herschel
Date:
[21 October 1840]
Source of text:
RS:HS 18.27
Summary:

Notes loss of many old friends. Three years seclusion with bad health produced WW's treatise on conic sections, translated to Russian. Sends book on geometrical theorems and two memoirs. Discovered JH stated in 1813 what WW thought was recent discovery about catenary.

Contributor:
John Herschel Project
Collection
Document type
Transcription available