Spirits of Nitre.—An alcoholic solution of nitrous ether.
Steel, Tincture of.—See muriate tincture of steel.
Sulphate of Iron.—Copperas or green vitriol. See copperas.
Sulphate of Manganese.—See manganese, sulphate of.
Sulphur.—Often called brimstone. A mineral of yellowish color. Soluble in turpentine, fat oils, bisulphuret of carbon and hot liquor of potassa. With oxygen it forms sulphuric and sulphurous acids, and with the metals it combines as sulphurets or sulphides. It is an essential ingredient in gunpowder, and the gas arising from its combustion is employed in bleaching straw and woolen goods.
Tartar, Salts of.—See potash.
Turpentine.—An oleo-resinous substance as flowing from several species of pine, larch and fir trees. Oil of turpentine is obtained by distilling the crude turpentine.
Umber, Burnt.—See Burnt Umber.
Venice Turpentine.—A liquid resin which exudes from the larch tree. The Venice turpentine usually met with is turpentine to which is added a quantity of black melted resin.
Verdigris.—A green oxide of copper, very poisonous. The white of eggs is an antidote for the poison, when taken into the stomach.