Add the water very slowly to the tincture; by so doing an opalescent milky fluid is produced, which will retain its consistency for many years; by reversing this operation, pouring the tincture into the water, a cloudy precipitate of the resinous matter ensues, which does not again become readily suspended in the water.
Extract of Elder Flowers.
| Elder-flower water, | 1 quart. |
| Tincture benzoin, | 1 oz. |
Manipulate as for virgin's milk.
Similar compounds may, of course, be made with orange-flower and other waters.
SECTION XI.
COLD CREAM.
Galen, the celebrated physician of Pergamos, in Asia, but who distinguished himself at Athens, Alexandria, and Rome, about 1700 years ago, was the inventor of that peculiar unguent, a mixture of grease and water, which is now distinguished as cold cream in perfumery, and as Ceratum Galeni in Pharmacy.