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From:
H. E. Hubbard
To:
Sir John Herschel
Date:
[2 February 1871]
Source of text:
RS:HS 10.212
Summary:

Would like his views on the correct definition of a billion, to settle an argument.

Contributor:
John Herschel Project
From:
John S. Harris
To:
Sir John Herschel
Date:
[2 February 1871]
Source of text:
RS:HS 10.162
Summary:

Queries regarding the red glow seen during an eclipse of the sun.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Richard Anthony Proctor
Date:
[2 February 1871]
Source of text:
RS:HS 24.351
Summary:

Thanks RP for sending RP's Sun. Suggests a theory that the solar corona, rather than originating in the earth's atmosphere, is produced by reflection from meteoric dust. Informs RP that he has completed a catalogue of all observations of double stars.

Contributor:
John Herschel Project