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Todhunter, Isaac in correspondent 
Herschel, John in author 
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Herschel4608

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[7 April 1864]
Source of text:
RS:HS 24.37
Summary:

Unable to find the calculation of Wilhelm Struve about which IT inquired. Will investigate the matter further.

Contributor:
John Herschel Project

Herschel4130

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[18 July 1864]
Source of text:
RS:HS 24.54
Summary:

Cannot find the source of supposed Wilhelm Struve probability calculation; believes he has made a mistake. Regrets the error was not noticed in time to correct the seventh edition of Outlines Astr.

Contributor:
John Herschel Project

Herschel4264

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[4 July 1865]
Source of text:
RS:HS 24.116
Summary:

Sends copy of paper on 'projection of the sphere in which the problem is to make any infinitely small figure on the projection similar to that on the sphere,' which he has presented to the Royal Geographical Society.

Contributor:
John Herschel Project

Herschel4090

From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[19 January 1866]
Source of text:
RS:HS 24.139
Summary:

Describes the problem of 'probability of three points on a plane forming an acute triangle.' Notes Augustus De Morgan has the same solution to the problem.

Contributor:
John Herschel Project
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