Search: Herschel, John in correspondent 
Griesbach, John Henry in correspondent 
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Herschel, John in addressee 
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1840-1849::1843 in date 
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From:
John Henry Griesbach
To:
Sir John Herschel
Date:
[7 August 1843]
Source of text:
RS:HS 9.55
Summary:

Amuses himself in his spare time with astronomy. Would like advice on the composition of the metal for the speculum. Hears that Miss Caroline Herschel is in good health.

Contributor:
John Herschel Project
From:
John Henry Griesbach
To:
Sir John Herschel
Date:
[18 September 1843]
Source of text:
RS:HS 9.56
Summary:

Thanks for letter and advice. Has been able to get copies of William Parsons' (3rd Earl of Rosse) papers. Would like advice on the size of the grinding tool. Hopes to avail himself of JH's invitation to visit Collingwood.

Contributor:
John Herschel Project