Barite to Bastard.

Barite (Chern.) A mineral occurring in white crystals. In granular fonn. and in compacr "massive form resembling marble. It is often called heavy spar (BaSO 4)'
Barium. (Chem.) A sit very white, slightly lustrous, some-what malle­able metal; used in barium salts and in alloys (Ba).
Bark. The outer covering of a tree, a three-masted ship, a ship of small size.
Barley twist. (Fum.) Spiral turning.
Bar magnet. (Elec.) (I) A straight permanent magnet. (2) A perma­nent magnet made in a bar shape.
Barograph. (Aero.) A barometer which registers automatically.
Barometer. An instrument for indi­cating atmospheric pressure; used for forecasting a weather and for measuring elevations.

Baroque. Fantastic in style, heavily adorned. A style of architecture common in the first half of the eigh­teenth century. In furniture exe­mplified by such period styles as Louis XIY, Italian, and William and Mary.
Barrel vault. (Arch.) An arched ceiling consisting of one or more arches of concave cylindrical shape. "
Bars. (Fdry.)The ribs across the cope of a flask.
Bar stock. (Metal.) Fabricated bars of metal of regular sizes and lengths. "
Barytes or barium sulphate. (Paint.) See Blance fixe.
Baseule bridge. One in which the leaf or leaves are pivoted on a hori­zontal shaft and lift vertically.
Base. (Chem.) (1) A substance that produces hydroxyl ions when dissolvd in water. (2) A substance whose aqueous solutions contain (OR) ions and no. other negativeions. (3) A compound capable of so uniting with acids as to neutra­lize their acid properties"and form salts. (Fum.) The bottom of a piece of furniture; the plinth in carcase work; also the valances around the lower part of a bed. (Elec.)-the region, between the emitter and collector of a transistor into which minority carriers are injected. Analogous to the control grid in a value; it is the control electrode in a transistor.
Baseboard. (Arch.) The finishing board which covers the plaster wall where it meets the floor.
Base circle. (Gear.) In gear drawing,

Base the circle on which the involute tooth is constructed.
Base c:ourse. (Masonry) .The first course or foundation course on which the reminder rests.
Base line. (Arch. and Man. Arts) A definite line from which measure­ments are taken in laying out work.
Basement. (Arch.) The finished por­tion of a building below the main floor.
Base molding. (Arch.) The molding immediately above the plinth of a wall, pillar, or pedestal.
Base of a column. (Arch.) That part between the shaft and the pedestal.
Base plate or bed plate. (Mach.) The foundation plate or support of a piece of machinery.
Base trim. (Arch.) A board or molding used for finishing off the base of a piece of work, as on a baseboard.
Basic: load. (Aero.) The load on an aircraft when it is at rest or in a con­dition of un accelerated rectilinear flight. The basic load is needed for purposes of stress analysis.
Basic: steel. Steel produced by the "Basic-Bessemer" or by the basic open-hearth process, i.e., the means by which sulphur, phosphorus, silicon, manganese, and carbon can be removed from the molten charge. During the past twenty years the Bessemer process has been giving. way to the basic open-hearth process, owing to the fact that low phosphorus ore is being exhausted.
Basil. (Mech.) The beveled edge of a drill or chisel.
Basis weight. (Print.) The standard weight in pounds per ream for any given paper of given size.
Basket. (Aero.) The car suspended beneath a balloon for carrying passengers, ballast, etc.
Basrelief. A form of low relief sculpture in which the design or pattern is but slightly raised from the background.
Bass. The lowest male voice or voice part; of or pertaining to the lowest . part in hannonic music.
Bass boost. An accentuation oflower audio frequencies, normally provided by an equaliser or tone control.
Ball drive. Low frequency speaker unit, or woofer, in complete loud­speaker system.
Basset table. (Furn.) A Queen Anne period card table.
BassineL (Furn.) A basket-shaped baby's bed or cradle, originally made of wicker.
Basswood. (Wood) The n~me given American Linden. a lar-ge tree
which usually grows to a height of from 60 to 70 feet. Wood: diffuse porous; rays: distinct but colorless, light, soft, compact, moderately strong; light brown to nearly white, fine in texture; weight: 29 pounds per cu.ft.; uses: paper pulp, wooden-ware, cheap furniture, panels, carving, and to some extent in airplane manufacture. Easy to work.
Bastard. (Mech.) A term frequently applied to anything which does not conform to accepted standards. (Metalwk.)A course-cut file but not as rough as a first cut. (Print.) Type with a face larger or smaller than the

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