EXPERIMENT V.

Twenty grains of Magnesia preserved six drachms of ox's gall free

from any signs of corruption for twenty-four hours after the standard

containing gall and water, of each six drachms, had become putrid. A

scruple of the calcined Magnesia mixed with the same proportions of

gall and water, remained without any alteration as long as they were

attended to, which was about ten days.

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 50 / 93 题