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orge (Metal.), a kind of furnace for producing wrought iron directly from the ore. It was formerly much used, esp. in Catalonia, and is still used in some parts of the United States and elsewhere.

A process by which reaction occurs in the presence of certain agents which were formerly believed to exert an influence by mere contact. It is now believed that such reactions are attended with the formation of an intermediate compound or compounds, so that by alternate composition and decomposition the agent is appare…

he catalytic power is ill understood." Ure. Catalytic force, that form of chemical energy formerly supposed to determine catalysis.

Among theatrical performers, the last word of the preceding speaker, which reminds one that he is to speak next; cue.

timate or undecomposable conception; a predicament. The categories or predicaments -- the former a Greek word, the latter its literal translation in the Latin language -- were intended by Aristotle and his followers as an enumeration of all things capable of being named; an enumeration by the summa genera i.e., the mos…

The curve formed by a rope or chain of uniform density and perfect flexibility, hanging freely between two points of suspension, not in the same vertical line.

cted light, and particularly that which is reflected from mirrors or polished bodies; --- formerly caled anacamptics.

or pertaining to the white races of mankind, of whom the people about Mount Caucasus were formerly taken as the type.

by another surface are tangents. Caustic curves and surfaces are called catacaustic when formed by reflection, and diacaustic when formed by refraction.

small cavity, like a small spoon. Arbuthot. Abnormal spaces or excavations are frequently formed in the lungs, which are designated cavities or vomicæ. Quain. Body cavity, the coelum. See under Body.

; sing Cayuga. (Ethnol.) A tribe of Indians formerly inbabiting western New-York, forming part of the confederacy called the Five Nations.

very tissue, either vegetable or animal, is a cell; the whole series of cells having been formed from the development of the germ cell and by differentiation converted into tissues and organs which, both in plants ans animals, are to be considered as a mass of minute cells communicating with each other. -- Cellular ti…

One of an ancient race of people, who formerly inhabited a great part of Central and Western Europe, and whose descendants at the present day occupy Ireland, Wales, the Highlands of Scotland, and the northern shores of France. [Written also Kelt. The letter C was pronounced hard in Celtic languages.]…

A United States coin, the hundredth part of a dollar, formerly made of copper, now of copper, tin, and zinc.

A movable or sliding keel formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent leeway when the vessel is beating to windward. It is used in vessels of all sizes along the co…

A literary or a musical composition formed by selections from different authors disposed in a new order.

n of a line or surface about a fixed axis, depending upon the principle that every figure formed by the revolution of a line or surface about such an axis has for measure the product of the line or surface by the length of the path of its center of gravity; -- sometimes called theorem of Pappus, also, incorrectly, Guld…

A division of the Roman people formed according to their property, for the purpose of voting for civil officers.

constellation near the pole. Its head, which is in the Milky Way, is marked by a triangle formed by three stars of the fourth magnitude. See Cassiopeia.

Work formed of clay in whole or in part, and baked; as, vases, urns, etc. Knight.