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treatment causes the fiber to shrink in length and become stronger and more receptive of dyes. If the yarn or cloth is kept under tension during the process, it assumes a silky luster. -- Mer`cer*i*za"tion (#), n.

n, n. -- Methyl orange. (Chem.) See Helianthin. -- Methyl violet (Chem.), an artificial dye, consisting of certain methyl halogen derivatives of rosaniline.

e bromide, CH2Br2; -- formerly called also methene. Methylene blue (Chem.), an artificial dyestuff consisting of a complex sulphur derivative of diphenyl amine; -- called also pure blue.

nd coloring matter, serves as a bond of union, and thus gives fixity to, or bites in, the dyes.

trees and shrubs, mostly East Indian, many species of which yield valuable red and yellow dyes. The wood is hard and beautiful, and used for gunstocks.

A yellow dyestuff extracted from the root bark of an East Indian plant (Morinda citrifolia).

y from goatskin (though an inferior kind is made of sheepskin), and tanned with sumac and dyed of various colors; -- said to have been first made by the Moors.

ing green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. Formerly called also ammonium purpurate.

A thin cotton, white, dyed, or printed. The name is also applied to coarser and heavier cotton goods; as, shirting and sheeting muslins. Muslin cambric. See Cambric. -- Muslin delaine, a light woolen fabric for women's dresses. See Delaine. [Written also mousseline de laine.]

ontains tannin, and was formerly used in medicine, but is now chiefly used in tanning and dyeing. Myrobolans are produced by various species of Terminalia of the East Indies, and of Spondias of South America.

Fine linen or crape dyed of this color. Ure.

ves among organic compounds. Formerly called also naphthaline. Naphthalene red (Chem.), a dyestuff obtained from certain diazo derivatives of naphthylamine, and called also magdala red. -- Naphthalene yellow (Chem.), a yellow dyestuff obtained from certain nitro derivatives of naphthol.

A dyestuff, resembling alizarin, obtained from naphthoquinone as a red crystalline substance with a bright green, metallic luster; -- called also naphthalizarin.

henol (carbolic) odor. Naphthol blue, Naphthol orange, Naphthol yellow (Chem.), brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone.

One of a group of leucocytes whose granules stain only with neutral dyes. -- Neu"tro*phil"ic (#), a., Neu*troph"i*lous (#), a.

The complex, nitrogenous, organic base and dyestuff called also aniline black.

A dark blue dyestuff, of the induline group; -- called also azodiphenyl blue.

A reddish brown amorphous dyestuff,

substance, which has a strong acid taste, and is poisonous in large doses. It is used in dyeing, calico printing, bleaching flax and straw, the preparation of formic acid, and in salts of lemon for removing ink stains, mold, etc.

An artifical red nitrogenous dyestuff, called also red coralline.