Prussian Blue. the name given to sesqui-ferrocyanide of iron, used as a colouring matter. It was discovered in 1704 by Diesbach in Berlin (whence it is also called Berlin Blue), and the manufacture was kept a secret till 1724. See BLUE; also DYEING, Vol. IV. p. 136.
Prussian Blue.
Chambers's Encyclopaedia, Volume 8: Peasant to Eoumelia, p. 467
Source scan(s): p. 0476