Search: Herschel, John in author 
1820-1829::1822::04 in date 
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Herschel5226

From:
Sir John Herschel
To:
Charles Babbage
Date:
[1822-4]
Source of text:
RS:HS 20.135
Summary:

Tells CB that JH has seen a calculating machine made by some 'rascally frenchman'.

Contributor:
John Herschel Project

Herschel12278

From:
Sir John Herschel
To:
Joseph Nicolas Nicollet
Date:
[20 April 1822]
Source of text:
RS:HS 13.134bis & RS:HS 20.138
Summary:

P. L. Guinand has informed the Astronomical Society that he can make flint glass free from the usual imperfections. Would like any information from JN. One of his papers has been named as likely to receive a prize. Hears that an arithmetical machine has recently been demonstrated before the Institute. Have any details been made public?

Contributor:
John Herschel Project

Herschel7795

From:
Sir John Herschel
To:
Henrik Johan Walbeck
Date:
[22 April 1822]
Source of text:
RS:HS 18.10b & 19.13
Summary:

Sends first volume of Astronomical Society's Transactions and JH's paper on aberrations ['On the Aberrations of Compound Lenses.' 1821]. Asks for geodesical results at Ã…bo.

Contributor:
John Herschel Project

Herschel5225

From:
Sir John Herschel
To:
Charles Babbage
Date:
[26 April 1822]
Source of text:
RS:HS 2.172 & 20.139
Summary:

Please forward enclosed note to Mrs. Roget [wife of P. M. Roget?]. Various items of interest.

Contributor:
John Herschel Project
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