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John Herschel Project in contributor 
Herschel, John in addressee 
1840-1849::1842::09::16 in date 
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From:
Elizabeth [Betty] Plumleigh Babbage
To:
Sir John Herschel
Date:
1842-9-16 or later
Source of text:
RS:HS 2.300
Summary:

Congratulations on the birth of his daughter.

Contributor:
John Herschel Project
From:
George Biddell Airy
To:
Sir John Herschel
Date:
[16 September 1842]
Source of text:
RS:HS 1.109 (C: RGO 6.427.68)
Summary:

Asking JH for his views on Charles Babbage's calculating machine, so that he can pass on the information to the Chancellor of the Exchequer.

Contributor:
John Herschel Project