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to a focus. -- Burning house (Metal.), the furnace in which tin ores are calcined, to sublime the sulphur and arsenic from the pyrites. Weale. -- Burning mirror, a concave mirror, or a combination of plane mirrors, used for the same purpose as a burning glass.

An oxide of zinc which collects on the sides of furnaces where zinc is sublimed. Formerly applied to the mineral calamine.

A cream-colored limestone for building, found near Caen, France.

Consisting of, or containing, lime and bitumen. Lyell.

lcite or calcium carbonate; consisting of, or containg, calcium carbonate or carbonate of lime. Clcareous spar. See as Calcite.

Lime-yielding; calciferous

Pertaining to, derived from, or containing, calcium or lime.

Bearing producing, or containing calcite, or carbonate of lime. Calciferouse epoch (Geol.), and epoch in the American lower Silurian system, immediately succeeding the Cambrian period. The name alludes to the peculiar mixture of calcareous and siliceous characteristics in many of the beds. See the Diagram under Grology…

The process of chenge into a stony or calcareous substance by the deposition of lime salt; -- normally, as in the formation of bone and teeth; abnormally, as in calcareous degeneration of tissue.

Consisting of, or containing, calcareous matter or lime salts; calcareous.

In the form of chalk or lime.

To make stony or calcareous by the deposit or secretion of salts of lime.

Holding lime or other earthy salts; as, the calcigerous cells of the teeth.

matter, as when carbonic and acid is expelled from carbonate of calcium in the burning of limestone in order to make lime.

the action of heat; to expel volatile matter from by means of heat, as carbonic acid from limestone, and thus (usually) to produce disintegration; as to, calcine bones.

Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also calc-spar and calcareous spar.

An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight

Eroding, or eating into, limestone.

Quicklime. [Obs.]

A tube or duct; as, the alimentary canal; the semicircular canals of the ear. Canal boat, a boat for use on a canal; esp. one of peculiar shape, carrying freight, and drawn by horses walking on the towpath beside the canal. Canal lock. See Lock.