Search: Herschel, John in correspondent 
Sykes, William Henry in correspondent 
1860-1869::1861 in date 
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Herschel3385

From:
Sir John Herschel
To:
William Henry Sykes
Date:
[24 October 1861]
Source of text:
RS:HS 17.155 (C: RS:HS 23.343)
Summary:

Stresses importance for Balloon Committee of obtaining corresponding temperatures and pressures; describes two highly sensitive thermometers that might be built for this purpose.

Contributor:
John Herschel Project

Herschel3495

From:
William Henry Sykes
To:
Sir John Herschel
Date:
[28 October 1861]
Source of text:
RS:HS 17.156
Summary:

Updates JH on activities of Balloon Committee, and thanks him for suggestion regarding temperature measurement. Mentions improving health of Mrs. Sykes.

Contributor:
John Herschel Project
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