PIGMENTS.— Continued

Color. Composition, Preparation, Etc. Alizarin-orange (alizarin N). Action of nitric acid on alizarin. Alizarin-purple. Treating alizarin with ferrous sulphate. Orange-red. Lilac. Aiizarin-red. Alizarin-violet (anthracene-violet, gallein). b. Purpurin. Flavo-purpurin. Flesh-color. Violet. Action of phthalic an hydrid on pyrogallol. Oxidation of alizarin. Yellowish-red. Yellowish-red. Similar to alizarin. b. Azo-dyes. Olive and mo -green. Acid yellow (fast yellow). Treating amido azo toluene hydro chlorid with fuming sulphuric acid. Anilin-yellow (spirit-yellow). Heating chlorid. diamidoazobenzene Azarin. Compound naphthol-azo-dich lor phenol and ammonium acid of sulphite. Azo-blue. Action of tetraza-ditolyl chlorid on pota ium Benzo-purpurin. Formed from ortho tolidin naphthionic acid. Biebrich scarlet (Ponceau B). Action of diazo azobenzene upon Scarlet. Brilliant yellow. Formed from one molecule of diamidostilbenedisulphonic acid with two molecules of phenol. Yellow. Buffalo rubin. Derived from a-naphthyl am in and naphthol. with and anilin two hydro molecules of Yellow. Brilliant red. Dark-blue. Scarlet. Red. Carmin-naphtha. Derived from a-naphthyl am in and naphthol. Carmin. Chrysamin. Action of tetrazodiphenyl chlorid on sodium salicylate. Sulphur-yellow. Chrysoidin. Diamidoazobenzene hydro chlorid. Chrysolin. Sodium benzyl-fluorescein. Bright yellow. Yellow. Chrysophan in. By ethylating brilliant yellow. Claret-red. Sodium a-azo naphthalene, disulphonate. Congo G R. From benzidin, amido benzol sulphonic naphthionsulphuric acid. Congo-red. Crocein-scarlet. Sodium benzidin and naphthionate. Double brilliant scarlet G. acid, and Orange-yellow. Red. Red. Red. Diazotizing amido azo benzol mono sulphonic acid with hydrochloric acid and sodium nitrite. Scarlet. Scarlet. From the diazo-compound of acid and Double scarlet S. From the diazo-compound of acid and a-naphthol mono sulphonic acid. Fast brown G. Sodium a-naphthol dis azo, Fast red. Sodium sulphonate. Fast red B (Bordeaux B). Derived from a-naphthyl am in and naphthol. Scarlet. Brown. Garnet-red. Red. French red. Mixture of claret-red and naphthol-orange. He ian purple N. One molecule of diamidostilbenedisulphonic with two molecules of acid Purple. He ian purple P.