Search: Herschel, John in correspondent 
Wallace, William in correspondent 
1840-1849 in date 
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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
From:
Sir John Herschel
To:
William Wallace
Date:
[16 December 1840]
Source of text:
RS:HS 22.72
Summary:

Gratified by WW's volume. Recalls JH's catenary theorems. Writes function to complete theory of exponential transcendents. WW's applications have greater practical bearing than JH's early efforts, which JH now finds difficult to decipher. Sorry that WW declared Mr. Gilbert's tables defective.

Contributor:
John Herschel Project