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g in small fragments; -- so called from Rocca, in Syria, whence alum is said to have been obtained; -- also called rock alum.

ames of persons belonging to an organization, in order to ascertain who are present or to obtain responses from those present.

rom the Arabic numerals, 1, 4, etc. Roman alum (Chem.), a cubical potassium alum formerly obtained in large quantities from Italian alunite, and highly valued by dyers on account of its freedom from iron. -- Roman balance, a form of balance nearly resembling the modern steelyard. See the Note under Balance, n., 1. --…

A complex nitrogenous base, C20H21N3O, obtained by oxidizing a mixture of aniline and toluidine, as a colorless crystalline substance which forms red salts. These salts are essential components of many of the socalled aniline dyes, as fuchsine, aniline red, etc. By extension, any one of the series of substances derived…

pt, bearing a trilingual inscription, by aid of which, with other inscriptions, a key was obtained to the hieroglyphics of ancient Egypt. Brande & C.

A valuable cabinet wood of a dark red color, streaked and variegated with black, obtained from several tropical leguminous trees of the genera Dalbergia and Machærium. The finest kind is from Brazil, and is said to be from the Dalbergia nigra. African rosewood, the wood of the leguminous tree Pterocarpus erinaceus. --…

in left after distilling off the volatile oil of turpentine; colophony. Rosin oil, an oil obtained from the resin of the pine tree, -- used by painters and for lubricating machinery, etc.

d extracted from madder root. It is a yellow crystalline substance from which alizarin is obtained.

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.

Pertaining to, or designating, an acid which is obtained from gallic acid as a brown or red crystalline substance, and is related to rufiopin and anthracene.

A yellowish red crystalline substance related to anthracene, and obtained from opianic acid.

A phenol derivative of anthracene obtained as a white crystalline substance, which on oxidation produces a red dyestuff related to anthraquinone.

ot that they which run in a race run all, but one receiveth the prize So run, that ye may obtain. 1 Cor. ix. 24.

ly in Russia but now elsewhere, having a peculiar odor from being impregnated with an oil obtained from birch bark. It is much used in bookbinding, on account of its not being subject to mold, and being proof against insects. -- Russia matting, matting manufactured in Russia from the inner bark of the linden (Tilia Eu…

pertaining to, or obtained from, rue (Ruta); as, rutic acid, now commonly called capric acid.

ercitrin. Rutin is found in the leaves of the rue (Ruta graveolens) and other plants, and obtained as a bitter yellow crystalline substance which yields quercitin on decomposition.

Of, pertaining to, or obtained from, saccharine substances; specifically, designating an acid obtained, as a white amorphous gummy mass, by the oxidation of mannite, glucose, sucrose, etc.

Of or pertaining to saccharimetry; obtained saccharimetry.

A bitter white crystalline substance obtained from the saccharinates and regarded as the lactone of saccharinic acid; -- so called because formerly supposed to be isomeric with cane sugar (saccharose).

gnating a complex acid not known in the free state but well known in its salts, which are obtained by boiling dextrose and levulose (invert sugar) with milk of lime.