Calamine to Camber.

Calamine
Calamine. (Chern.) Zn(OH)2ZnSiO 3"Silicate of zinc; a common zinc ore.
Calcimine. A wash made of whiting and glue, mixed with water. It is often tinted for use on walls.
Calcine. (Chern.) To make friable; i.e., reduce to powder, by heat.
Calcined bone. (Pot.) Bone changed to a friable powder through the ac­tion of dry heat.
Calcined kaolin. (Pot.) A clay like, mealy, white, gray, or red alu­minium silicate, used in making porcelain. .
Calcining. The heating or roasting of metallic ores for the purpose of ex­pelling some of the foreign and in­jurious ingredients.
Calcite. Commonly, lime-stone. Used as a flux in the manufacture of pig iron and steel. Principal U.S. sources are Pennsylvania. Michi­gan, West Virginia, and Illinois.
Calcium. (Chern.) Ca. Silvery-white soft light metal, lustrous when freshly produced. Tarnishes quickly in the air due to oxidation. Used for alloying metals and in school laboratories for producing hydrogen gas from water.
Calcium carbide. (Chern.) CaC2. Ob­tained by heating a mixture oflime and coke in the electric furnace. Used for making acetylene gas by treating with water.
Calcium carbonate. (Chern.) Limestone is the most abundant variety, although it is never pure; marble is a pure variety; chalk, shells, and coral are mainly calcium carbonate.

Calcium o.xide. (Pot.) Lime is nearly pure calcium oxide.
Calculagraph. (Print.) A device con­sisting of clock and time stamp used for stamping exact time of payment on a bill, etc.
Calculating machir.e. Any of the vari­ous machines designed to perform mathematical operations mechan~­cally.
Calcutator. n. one who or that which calculates.
Calculus. (Math.) A mathematical technique developed by Newton and Leibnitz each working independ­
ently. It introduces the concept of limits to the problem of determining the ratio of the change in value of a function to the increment of its varibale x, as the increment ap­proaches zero. By this technique an entirely new field of study was opened to mathematical investiga­tion and research.
Caldron. A large metal kettle or boiler. Calender. (Paperrnkg.) A set of roll­ers for imparting desired smoothness to the surface of dried paper.
Calendered. (Paparrnkg.) Refers to polishing of sized and coated papers.
-Calendering. (Plast.) The operation of rolling plastic sheet to specified thickness from a doughy mass through two 'or more sets of counter rotating rolls. (Textile) A smooth­

Caliber ness, luster, and other effects im­parted to cloth by rolling it under pressure.
Caliber. (Plumb.) Internal diameter or bore.
Calibration. Ascertaining the amount of variation from absolute accuracy in a scientific instrument.
Caline. Caliper. (Shopwk.) A tool principally for measruing the diameter of cir­cular work. Inside and outside calipers. (Papermkg. and Print.) An instrument used for measuring the thickness of paper in thousandths of an inch.
Caliper rule. A graduated scale, with fixed head, which slides in a groove in a second piece which carries only a zero graduation. It can be used for both inside and outside calipering.
Caliper square. (Meeh.) A measur­ing instrument similar in shape to the vernier caliper but used where less accuracy is required. It consists of a fixed jaw which is an integral part of the graduated bar. The mov­able jaw has screw adjustment and can be locked in position.
Calking. Making a joint or seam watertight or steam-tight by filling: it in with rust cement or by closing the joint by means of a calking tool.
Calking tool. A piece of steel with a . blunt end, formed somewhat like a
chisel and used for closing up the joints of boiler plates. It is driven against them by sharp blow from a hammer.

Calorie. (Chern., Engin., Meeh., Phys.) A unit of heat. The amount of heat required to raise the temperature of one gram of water one degree centi­grade.
Calorimeter. (Elee.) An instrument for measuring the heat generated by an electrical current in a conductor. (phys.) An apparatus for measuring the quantity of heat generated by fricti;>n, combustion, or other chemi­cal change.
Calorizing. (Metal.) A method of coating iron and steel with alu­minium or aluminium-iron alloys.
Cam. (Mach.) A device mounted pn a revolving shaft used for transposing rotary motion into an alternating, reciprocating or back and forth motion.
Cam-and-lever steering; (A uto Meeh.) Consists of a sort of fmger cam attached to the cross shaft,which engages a threaded screw of varibale pitch on the lower end of the steering-gear shaft. The pitch of the screw, being slight at the center and increasing toward the ends, per­mits straight-ahead driving with minimum shock, and makes a rapid turning possible. .
Camber. (Aero.) The rise in the curve of an airfoil section from its chord,