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Formed or crystallized at depths the earth's surface; -- said of granite, gneiss, and other rocks, whose crystallization is believed of have taken place beneath a great thickness of overlying rocks. Opposed to epigene.

orus. It may be obtained from its water solution, by exaporation and freezing, as a white crystalline substance. It is a powerful reducing agent.

A crystalline, nitrogenous substance, closely related to xanthin and uric acid, widely distributed through the animal body, but especially in muscle tissue; -- called also sarcin, sarkin.

the solid state by cold; frozen water. It is a white or transparent colorless substance, crystalline, brittle, and viscoidal. Its specific gravity (0.92, that of water at 4° C. being 1.0) being less than that of water, ice floats.

A plant (Mesembryanthemum crystallinum), sprinkled with pellucid, watery vesicles, which glisten like ice. It is native along the Mediterranean, in the Canaries, and in South Africa. Its juice is said to be demulcent and diuretic; its ashes are used in Spain in making glass. Ice-skater = one who skates on ice wearing a…

Apperaing in distinct crystals; -- said of the mineral constituents of a rock.

Exhibiting interference figures without the aid of a polariscope, as certain crystals.

An alkaloid found in nux vomica, and extracted as a white crystalline substance.

A silicate of iron and lime occurring in black prismatic crystals and columnar masses.

A dark yellow, crystalline substance, obtained by the action of ammonia on isatin.

is obtained as a dark blue earthy powder, with a reddish luster, C16H10N2O2, which may be crystallized by sublimation. Indigo blue is also made from artificial amido cinnamic acid, and from artificial isatine; and these methods are of great commercial importance. Called also indigotin. (b) A dark, dull blue color like…

A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol.

A white, crystalline substance, C8H7N, obtained from blue indigo, and almost all indigo derivatives, by a process of reduction. It is also formed from albuminous matter, together with skatol, by putrefaction, and by fusion with caustic potash, and is present in human excrement, as well as in the intestinal canal of som…

A white crystalline substance with a sweet taste, found in certain animal tissues and fluids, particularly in the muscles of the heart and lungs, also in some plants, as in unripe pease, beans, potato sprouts, etc. Called also phaseomannite.

uestions; interrogation; a question or questioning. He could no path nor track of foot descry, Nor by inquiry learn, nor guess by aim. Spenser. The men which were sent from Cornelius had made inquiry for Simon's house, and stood before the gate. Acts x. 17.

e invention. Interference figures (Optics), the figures observed when certain sections of crystallized bodies are viewed in converging polarized light; thus, a section of a uniaxial crystal, cut normal to the vertical axis, shows a series of concentric colored rings with a single black cross; -- so called because produ…

ula, Helianthus, Campanula, etc., and is extracted by solution as a tasteless, white, semicrystalline substance, resembling starch, with which it is isomeric. It is intermediate in nature between starch and sugar. Called also dahlin, helenin, alantin, etc.

A yellow, crystalline, volatile substance, CI3H, having an offensive odor and sweetish taste, and analogous to chloroform. It is used in medicine as a healing and antiseptic dressing for wounds and sores.

A crystallized substance of the composition C4I4NH, technically tetra-iodo-pyrrol, used like iodoform.

A white crystalline substance obtained by the partial reduction of isatin. [Written also isatyde.]