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Carbonic Acid (Invisible weight of water upon)

An invisible weight of water, upon half its weight of acidulous gas, formed by the union of 1 chloride of limc. Chlorine gas is immediately cquivalent of carbon with 2 of oxygen, having evolved even in the cold, but much more a specific gravity of 1.524, and highly soluble rapidly on the application of a gentle heat. in water. Its general properties and the This gas must be collected in clean dry botmethods of obtaining it will be found in Nos. tles by displacement. The tube conducting 3913, &c. The application of this gas to the the gas must reach to the bottom of the botpurposes of wine-making, &c., is given in the, when the chlorine, being heavier than the No. 718. The methods for obtaining carbonic air, will displace the latter, without mixing acid gas are given in No. 3014. with it. The bottle is known to be full by