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llation of many organic bodies, as wood, coal, etc., and obtained from the heavy oil from coal tar.

a peculiar unpleasant odor, resembling the quinones, and obtained from beechwood tar and coal tar, as also by the oxidation of xylidine; -- called also xyloquinone.

der manufacture, the cake resulting from compressing the meal powder; in the treatment of coal tar, the pressed product at various stages of the process; or, in beet-sugar manufacture, the vegetable residue after the sugar juice has been expressed.

A hydrocarbon of the aromatic series, metameric with mesitylene and cumene, found in coal tar, and obtained as a colorless liquid.

One of the less volatile hydrocarbons of coal tar, obtained as a white crystalline substance, C16H10.

A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaïn…

A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with…

se, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type. [Written also chin…

emanent. -- Residual product, a by product, as cotton waste from a cotton mill, coke and coal tar from gas works, etc. -- Residual quantity (Alg.), a binomial quantity the two parts of which are connected by the negative sign, as a-b. -- Residual root (Alg.), the root of a residual quantity, as sq. root(a-b).…

A nitrogenous base homologous with pyridine, obtained from coal tar as an oily liquid, C11H17N; also, any one of the group od metameric compounds of which rubidine is the type.

a varied composition according to the temperature and material employed in obtaining it. Coal tar. See in the Vocabulary. -- Mineral tar (Min.), a kind of soft native bitumen. -- Tar board, a strong quality of millboard made from junk and old tarred rope. Knight. -- Tar water. (a) A cold infusion of tar in water, u…

with benzene, and obtained as a light mobile colorless liquid, by distilling tolu balsam, coal tar, etc.; -- called also methyl benzene, phenyl methane, etc.

A greenish, oily, nitrogenous hydrocarbon, C12H19N7, obtained from coal tar, and probably consisting of a mixture of several metameric compounds which are higher derivatives of the base pyridine.