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1860-1869::1864::03 in date 
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From:
Charles Pritchard
To:
Sir John Herschel
Date:
[31 March 1864]
Source of text:
RS:HS 14.91
Summary:

Forwards letter concerning 'solar bright particles' by W. R. Dawes. Inquires if diagonal solar eyepiece used in JH's solar spectrum observations.

Contributor:
John Herschel Project
From:
Charles Pritchard
To:
Richard Hodgson
Date:
[1 March 1864]
Source of text:
RS:HS 14.90
Summary:

Cites quotation from Cape Results proving that JH invented the diagonal solar eyepiece. Discusses RH's claim. Note to JH accompanies this letter.

Contributor:
John Herschel Project