Colour-blindness

Colour-blindness, inability, still unaccounted for, to distinguish between colours, and especially between red and green, more common among men than women; a serious disqualification for several occupations, such as those connected with the study of signals.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Colot * Colour-sergeant
Colonna
Colonna, Victoria
Colonne, Edouard
Colonus
Colophon
Colora`do
Colossæ
Colossians, The Epistle to the
Colossus
Colot
Colour-blindness
Colour-sergeant
Colquhoun, John
Colston, Edward
Colt, Samuel
Columba, St.
Columban, St.
Columbia
Columbia, British
Columbus
Columbus, Bartholomew