58

ALKALIS.

tort, and apply to the receiver a gentle andgradually-increasing heat, to drive over asmuch of the gas in the liquid contained init, but as little of the water, as possible.Should the liquid in the last bottle not havethe density of 960, reduce it with some of theStronger Aqua ammoniae in the first bottle,or raise it with distilled water, so as to formAqua ammoniae of the prescribed density.

Ammoniae carbonas.

Take of Sal-ammoniac, one pound ;

Chalk, one pound and a-half.Reduce them separately to fine powder, mixthem thoroughly, and subject the mixture ina retort with a proper receiver to a gradual-ly-increasing heat so long as any vapourssublime.

Ammoniae carbonatis aqua.

Take of Carbonate of Ammonia, four ounces

Distilled water, one pint.Dissolve the salt in the water.

Ammoniae acetatis aqua.

Take of Distilled vinegar, (from French vi-negar in preference) twenty-fourfluidounces;Carbonate of ammonia, one ounce.Mix them and dissolve the salt. If the So-lution has any bitterness, add by degrees a