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A sulphide of nickel, commonly occurring in delicate capillary crystals, also in incrustations of a bronze yellow; -- sometimes called hair pyrites.

fore me. Jer. ii. 22. Cubic niter, a deliquescent salt, sodium nitrate, found as a native incrustation, like niter, in Peru and Chili, whence it is known also as Chili saltpeter. -- Niter bush (Bot.), a genus (Nitraria) of thorny shrubs bearing edible berries, and growing in the saline plains of Asia and Northern Afri…

To incrust; to harden. [Obs.] Dr. H. More.

A cellular calc tufa, which in some places forms incrustations on the stems of plants, -- formerly supposed to have the quality of uniting fractured bones.

The color or incrustation which age gives to works of art; especially, the green rust which covers ancient bronzes, coins, and medals. Fairholt.

That which is petrified; popularly, a body incrusted with stony matter; an incrustation.

Native boric acid, found in saline incrustations on the borders of hot springs near Sasso, in the territory of Florence.

An incrustation over a sore, wound, vesicle, or pustule, formed by the drying up of the discharge from the diseased part.

An incrustation deposit on the inside of a vessel in which water is heated, as a steam boiler.

ck or greenish black mineral occurring in foliated flates, also in velvety bronze-colored incrustations. It is a hydrous silicate of iron and alumina.

Any plant of the genus Chara; -- so called because they are often incrusted with carbonate of lime. See Chara.

of manna. Tamarisk salt tree, an East Indian tree (Tamarix orientalis) which produces an incrustation of salt.

A correction which often incrusts the teeth, consisting of salivary mucus, animal matter, and phosphate of lime. Cream of tartar. (Chem.) See under Cream. -- Tartar emetic (Med. Chem.), a double tartrate of potassium and basic antimony. It is a poisonous white crystalline substance having a sweetish metallic taste, an…

A yellow, earthy incrustation, consisting essentially of the oxide of uranium, but more or less impure.

t of which little is known. It is said by Scacchi to have been extracted from a yellowish incrustation from the cracks of a Vesuvian lava erupted in 1631.

A hydrous carbonate of nickel occurring as an emerald-green incrustation on chromite; -- called also emerald nickel.

zinc, oxide of zinc] (Min.), hydrous carbonate of zinc, usually occurring in white earthy incrustations; -- called also hydrozincite. -- Zinc ethyl (Chem.), a colorless, transparent, poisonous liquid, composed of zinc and ethyl, which takes fire spontaneously on exposure to the atmosphere. -- Zinc green, a green pigm…