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roller with indented edge or surface, for producing like indentations in metal by rolling pressure, as in turning; a knurling tool; a milling cutter.

miners. -- Miner's inch, in hydraulic mining, the amount of water flowing under a given pressure in a given time through a hole one inch in diameter. It is a unit for measuring the quantity of water supplied.

An apparatus for raising a liquid by pressure of air or steam in a reservoir containing the liquid.

al arguments; moral considerations. Sometimes opposed to material and physical; as, moral pressure or support.

nating, a generator producing, or any system conveying or utilizing, two or more waves of pressure, or electromotive force, not in phase with each other; polyphase.

of printing from metallic or other plates which have received an impression, as by heavy pressure, of an object such as a leaf, lace, or the like. -- Nature worship, the worship of the personified powers of nature. -- To pay the debt of nature, to die.

ne. Neutral axis, Neutral surface (Mech.), that line or plane, in a beam under transverse pressure, at which the fibers are neither stretched nor compressed, or where the longitudinal stress is zero. See Axis. -- Neutral equilibrium (Mech.), the kind of equilibrium of a body so placed that when moved slighty it neithe…

Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

Soft mud or slime; earth so wet as to flow gently, or easily yield to pressure. "My son i' the ooze is bedded." Shak.

ment for recording the height of the liquid in an endosmometer or for registering osmotic pressures.

A soft bag or cushion to relieve pressure, support a part, etc.

n points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, composition, and properties. It is refined by distillation, and the produc…

on of the retina by some cause other than the impingement upon it of rays of light, as by pressure upon the eyeball when the lids are closed. Cf. After- image.

A filtering machine operated by air pressure.

A gauge connected with a water main to show the pressure at that point.

eumatic. -- Screw pile, one with a screw at the lower end, and sunk by rotation aided by pressure.

A piece of metal or wood, forming a support to equalize pressure; a brass; a pillow block. [R.]

A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes.…

Capable of plying or bending; readily yielding to force or pressure without breaking; flexible; pliable; lithe; limber; plastic; as, a pliant thread; pliant wax. Also used figuratively: Easily influenced for good or evil; tractable; as, a pliant heart. The will was then ductile and pliant to right reason. South.…

utonic action (Geol.), the influence of volcanic heat and other subterranean forces under pressure. -- Plutonic rocks (Geol.), granite, porphyry, and some other igneous rocks, supposed to have consolidated from a melted state at a great depth from the surface. Cf. Intrusive rocks, under Intrusive. -- Plutonic theory.…