Search: Herschel, John in correspondent 
Forbes, James David in correspondent 
1840-1849::1842::04 in date 
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Herschel9564

From:
James David Forbes
To:
Sir John Herschel
Date:
[6 April 1842]
Source of text:
RS:HS 7.301
Summary:

Would like to know the composition of the fluid in JH's actinometers.

Contributor:
John Herschel Project

Herschel3316

From:
Sir John Herschel
To:
James David Forbes
Date:
1842-4-9[?]
Source of text:
St. Andrews 21? (C: RS:HS 22.115)
Summary:

Instructions for preparing liquid for the actinometer. Describes 'very strange' experiments on the spectrum as well as an 'unusual' cloud formation.

Contributor:
John Herschel Project
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