EXPERIMENT X.

Five grains of camphor were rubbed for five minutes with an equal

quantity of calcined Magnesia: after the camphor was reduced to powder,

it united into a hard concrete with the Magnesia, but immediately

dissolved on the addition of a small quantity of distilled water, of

which an ounce was mixed with them, and immediately passed through

filtering paper. The filtrated liquor was highly impregnated with the

camphor.

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 57 / 93 题