See also:tree, used for snaring birds and known as "
See also:bird-lime." In chemistry, it is the popular name of calcium
See also:oxide, CaO, a substance employed in very early times as a component of mortars and cementing materials . It is prepared by the burning of
See also:limestone (a
See also:process described by Dioscorides and Pliny) in kilns similar to those described under
See also:CEMENT . The value and subsequent treatment of the product depend on the purity of the limestone; a pure
See also:stone yields a "
See also:fat " lime which readily slakes; an impure stone, especially if
See also:magnesia be
See also:present, yields an almost unslakable " poor " lime . See CEMENT, CONCRETE and
See also:MORTAR, for details . Pure calcium oxide "
See also:quick-lime," obtained by
See also:heating the pure carbonate, is a
See also:white amorphous substance, which can be readily melted and boiled in the electric
See also:furnace, cubic and acicular crystals being deposited on cooling the vapour . It combines with
See also:water, evolving much
See also:heat and crumbling to pieces; this operation is termed " slaking " and the resulting product " slaked lime "; it is chemically
See also:equivalent to the conversion of the oxide into
See also:hydrate . A solution of the hydrate in water, known as lime-water, has a weakly alkaline reaction; it is employed in the detection of carbonic acid . " Milk of lime " consists of a cream of the hydrate and water . Dry lime has no
See also:action upon chlorine,
See also:carbon dioxide and
See also:sulphur dioxide, although in the presence of water combination ensues . In
See also:medicine lime-water, applied externally, is an astringent and desiccative, and it enters into the preparation of linamentum calcis and carron oil which are employed to heal burns, eczema, &c . Applied internally, lime-water is an antacid; it prevents the curdling of milk in large lumps (hence its
See also:prescription for infants); it also acts as a gastric sedative . Calcium phosphate is much employed in treating
See also:rickets, and calcium chloride in haemoptysis and haemophylia .
It is an antidote for
See also:mineral and oxalic acid poisoning .
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