of the elements.

Amiss. Wrong, fault, misdeed.

Annealing. A process of gradually heating and cooling metals,
whereby hardness and toughness are brought about.

Angle plate. A metal structure which has two bodies, or limbs,
at right angles to each other.

Analysis. The separating of substances into their elementary
forms.

Anchor bolt. A structure intended to be placed in a hole in a wall,
and held there by a brew which expands a part
of the structure.

Apprentice. One who is learning a trade or occupation.

Artificial. That which resembles the original; made in imitation
of.

Arbor. A shaft, spindle, mandrel, or axle.

Armature. A metallic body within the magnetic field of a magnet.

Arbitrary. Stubborn determination. Doing a thing without regard
to consequences.

Artisan. One skilled in any mechanical art.

Attributable. That which belongs to or is associated with.

Automatically. Operating by its own structure, or without outside
aid.

Augmented. Added to; to increase.

Auxiliary. To aid; giving or furnishing aid.

Avoirdupois. The system of weights, of which the unit is sixteen
ounces.

Back-saw. A saw which has a rib at its upper margin.

Barleycorn. A grain of barley.

Bastard. A coarse-grained file.

B. T. U. British Thermal Unit.

Back-gear. That gear on a lathe for changing the feed.

Bevel. Not in a right line; slanting; oblique.

Bibb. A form of water faucet.

Bit, or bitt. A form of tool for cutting purposes on a lathe, planer,
shaper, or drilling machine.

Borax. A white crystalline compound, of a sweetish taste.
Chemically it is sodium biborate.

Buffs. Usually a wheel covered with leather or cloth, and
having emery dust on it, for fine polishing purposes.

Buffeted. Thrown back.

Bronze. An alloy of copper and tin.

Calcium. Lime.

Cant. A form of lever.

Carbonate. A salt of carbonic acid.

Caustic. Capable of corroding or eating away.

Capillary. That quality of a liquid which causes it to move
upwardly