EXPERIMENT XXXI._Experiments and Observations on the Following Subjects 1. On the preparation, calcination, and medicinal uses of Magnesia Alba. 2. On the solvent qualities of calcined Magnesia. 3. On the variety in the solvent powers of quick-lime, when used in different quantities. 4. On various absorbents, as promoting or retarding putrefaction. 5. On the comparative antiseptic powers of vegetable infusions prepared with lime, &c. 6. On the sweetening properties of fixed air.

Two drachms of Magnesia Alba diluted with two ounces of water were

placed in a quart bottle, to which was added a sufficient quantity of

the strong spirit of vitriol to let loose all the fixed air from the

Magnesia, during the separation of which, another equally putrid piece

of beef was suspended in the bottle, which was so corked as to retard,

though not totally prevent the escape of the air. Another piece of the

same beef, was exposed in like manner to the vapour arising from the

addition of oil of vitriol to two drachms of chalk diluted with water.

They were suffered to remain for twenty two minutes, and being then

examined were absolutely free from any putrid foetor, and though well

washed in water continued quite sweet.

Experiments and Observations on the Following Subjects 1. On the preparation, calcination, and medicinal uses of Magnesia Alba. 2. On the solvent qualities of calcined Magnesia. 3. On the variety in the solvent powers of quick-lime, when used in different quantities. 4. On various absorbents, as promoting or retarding putrefaction. 5. On the comparative antiseptic powers of vegetable infusions prepared with lime, &c. 6. On the sweetening properties of fixed air. · 第 83 / 93 题