BLEU

(Fr.), adj. and n. Blu’. Blue. [B.]—B. coupier. A blue pigment made up of compounds of tri phenylene diamine blue and viol aniline with sulphuric acid. [B, 49.|—B.. A mixture of protoxide of cobalt and silica, [A, 385.]—B8. de Berlin. Ferrocyanide of iron. [B, 81.]—B. de composition. See B. de Saxe.—B. de Lyon. A blue dye obtained by heating a salt of rosaniline with aniline. [Perkin, ‘ Nature,” July 30, 1885 (B).|—B. de montagne. Carbonate of copper. [A,385.]—I3. de Nerprun. A violet-blue coloring matter found in the berries of Rhammus cathartic us; it is turned green by alkalies and by alum. [A, 301.J— B. de Paris. An aniline blue obtained by heating stannic chloride with aniline, [B, 2.]—B. de Pru e. See B. de Berlin.—B. de Saxe. A blue pigment formed by the action of sulphuric acid on indigo, [B, 173.|—B.. Indigo. [B, 173.)—B. en liqueur. See B. de Saxe.