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PROOFS OF THE PROPERTIES OF AMMONIA,

receiver, and exposing it to the action of the gas. The first willsoon become brown and the latter green.

The same effect may be produced by holding the papers over abottle filled with water impregnated with ammonia.

Experiment VI.

Carloric acid gas and ammonia readily unite and form carbonateof ammonia.

Fill a vessel with carbonic acid gas over mercury, and add am-monia ; a white vapour will instantly be formed, heat becomesevolved, the gases disappear, and carbonate of ammonia crystal-lizes on the inside of the vessel.

Experiment VII.

Ammonia becomes decomposed ly oxigenated muriatic acid gas,at common temperatures.

Mix in a receiver over mercury two parts of oxigenated mu-riatic acid gas with one part by measure of ammonia. Whenthese two bodies come in contact, a brisk detonation is producedaccompanied with a yellowish light; the two gases decrease involume, and there is formed a portion of solid matter (muriateof ammonia) which adheres to the sides of the vessel. Thegas which remains has no odour like ammonia, nor colour likemuriatic acid gas. It is not dissolved in water, nor does it main-tain combustion; it is therefore nitrogen gas. In the bottom ofthe vessel there is found a clear and transparent liquid, which iswater holding a certain quantity of the muriate of ammonia insolution.

Ration ale. ..Ammonia consists of nitrogen and hidrogen dis-solved in caloric. Oxigenated muriatic acid gas consists of mu-riatic acid, oxigen and caloric. On bringing these two gases intocontact a reciprocal decomposition takes place. Ihe oxigen of