ALL chemists admit that when sal-ammoniac is volatilised the vapour consists, if not wholly, at least in great part, of hydrochloric acid and ammonia gases in the free state. But this fact, so far as ...

ANGELO BANIERI has made the following observations on the ammonio-ferric sulphate (sal ammoniacum martiale) collected on the lava of Vesuvius. Many naturalists believe that the hydrochloric acid ...

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