A few drachms of the syrup of violets were dissolved in half a pint of
water, which was afterwards impregnated with air from an effervescing
mixture of chalk and the smoaking spirit of nitre; but the syrup of
violets suffered no change of colour.
EXPERIMENT XXXVII.
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 89 / 93 题