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produces a slowness or difficulty in imparting magnetism to it, and also interposes an obstacle to the return of a bar to its natural state when active magnetism has ceased. It plainly depends on the molecular constitution of the metal. Nichol. The power of resisting magnetization or demagnization is sometimes called c…

Any device in which an imperfectly conducting contact between pieces of metal or other conductors loosely resting against each other is materially improved in conductivity by the influence of Hertzian waves; -- so called by Sir O. J. Lodge in 1894 on the assumption that the impact of the electic waves caused the loosel…

A subdivision of the cretaceous formation of western North America, especially developed in Colorado and the upper Missouri region.

A knife or cutter, attached to the beam of a plow to cut the sward, in advance of the plowshare and moldboard. [Written also coulter.]

An axis to which a carpel of a compound pistil may be attached, as in the case of the geranium; or which is left when a pod opens.

union of the stamens in the Mallow family, or of the stamens and pistil in the orchids. Attached column. See under Attach, v. t. -- Clustered column. See under Cluster, v. t. -- Column rule, a thin strip of brass separating columns of type in the form, and making a line between them in printing.

Antedon and related genera. When young they are fixed by a stem. When adult they become detached and cling to seaweeds, etc., by their dorsal cirri; -- called also feather stars.

ut.), to turn it the contrary way, so as to slacken the rope about it. -- To come up the tackle fall (Naut.), to slacken the tackle gently. Totten. -- To come up to, to rise to; to equal. -- To come up with, to overtake or reach by pursuit. -- To come upon. (a) To befall. (b) To attack or invade. (c) To have a clai…

A gripping device, as for stretching wire, etc., consisting of two jaws so attached to a ring that they are closed by pulling on the ring.

ent vessel, and send it out on service after it has been laid up; esp., the formal act of tacking command of a vessel for service, hoisting the flag, reading the orders, etc. -- To put a vessel out of commission (Naut.), to detach the officers and crew and retire it from active service, temporarily or permanently. --…

A state; a body politic consisting of a certain number of men, united, by compact or tacit agreement, under one form of government and system of laws. The trappings of a monarchy would set up an ordinary commonwealth. Milton.

A piece of apparatus used for reversing the direction of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction.

ee under Azimuth. -- Beam compass. See under Beam. -- Compass card, the eircular card attached to the needles of a mariner's compass, on which are marked the thirty-two points or rhumbs. -- Compass dial, a small pocket compass fitted with a sundial to tell the hour of the day. -- Compass plane (Carp.), a plane, con…

constructed so as to take the grooves of a rifle by means of a soft copper band firmly attached near its base or, formerly, by means of an envelope of soft metal. In small arms the modern projectile, having a soft core and harder jacket, is subjected to compression throughout the entire cylindrical part.…

A celebrated prison, attached to the Palais de Justice in Paris.

unimportant side products. -- Surface condensation, the system of condensing steam by contact with cold metallic surfaces, in distinction from condensation by the injection of cold water.

of light. -- Injection condenser, a vessel in which steam is condensed by the direct contact of water. -- Surface condenser, an apparatus for condensing steam, especially the exhaust of a steam engine, by bringing it into contact with metallic surface cooled by water or air.

llful guidance or management; generalship. Conduct of armies is a prince's art. Waller. Attacked the Spaniards . . . with great impetuosity, but with so little conduct, that his forces were totally routed. Robertson.

conductivity. [The] communication [of heat] from one body to another when they are in contact, or through a homogenous body from particle to particle, constitutes conduction. Amer. Cyc.

(Geol.) The parallelism of two sets of strata which are in contact.