EXPERIMENT VIII._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.

Magnesia, calcined Magnesia, chalk, crab's eyes, _pulv. e chel.

cancr. c._ and _pulv. contrayerv. comp._ each in the proportion

of two scruples to two drachms of ox gall and two ounces of water,

were exposed to the usual warmth. The crab's eyes mixture grew rank

in twenty-four hours, and in forty-eight was absolutely putrid: the

bile with the chalk was in the same condition in twelve hours more.

The Magnesia mixture became putrid on the ninth day; the _pulvis e

chel._[s] on the tenth; but the _pulvis contrayerv. comp._ preserved

the bile from corruption about three weeks, and no change was

perceptible in that with the calcined Magnesia when examined above a

month after their first admixture.

[s] Doctor Macbride found that _pulv. e chel. c. c._ hastened the

corruption of bile: might not this depend on some variety in the

composition of that powder? Chalk and oyster shells are often

substituted in the hospitals and by the druggists, for the other

ingredients.

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 53 / 93 题