From:
Sir William Pole
To:
Cha[rle]s May
Date:
[2 July 1856]
Source of text:
RS:HS 14.17
Summary:
Claims himself perfect case of di-chromic vision, only seeing blue and yellow. Gave paper on his condition to R.S.L., quoting and supporting JH's theory. Hears JH is ill, or would send letter directly to JH.
Contributor:
John Herschel Project