Search: Herschel, John in addressee 
Herschel, John in correspondent 
Pole, William in correspondent 
1860-1869::1869 in date 
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From:
Sir William Pole
To:
Sir John Herschel
Date:
[18 March 1869]
Source of text:
RS:HS 14.29
Summary:

Notices in letter of last May JH's postscript about the rate of color blindness occurring to overworked or ill artists, and doubts it becomes di-chromic, but merely a 'weakness' of vision.

Contributor:
John Herschel Project
Document type
Transcription available