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To Obtain Ammonia

Mix un- like baryta, is precipitated white by sulphuric slacked lime with an equal weight of sal-am- acid and the alkaline sulphates and carbonmoniac, both dry and in fine powder; intro- ates. It is distinguished from baryta by its duce the mixture into a glass retort, and join inferior solubility and by its soluble salts givthe beak by a collar of India-rubber to a glass ing a red tinge to flame, while the salts of tube about 18 inches long, which must lie baryta impart a yellow tinge. The salts of horizontally, and have its beak bent up ready strontia may all be prepared by dissolving the to be placed under a glass jar, on the shelf of native carbonate in the respective acids. The a mercurial pneumatic trough. Heat being applied by means of a spirit-lamp, and the air contained in the apparatus having been expelled, the gas may be collected for use. Ammonia cannot be dried by means of chloride of calcium. nitrate is the only one met with in commerce, and is employed to form colored fireworks.