in Chemistry, is performed by six different agents; and by each of these in several different manners. 1. It is performed with water, by congealing, crystallizing, and precipitating, as in the mercurius vite and some other preparations. 2. With oil, which, by the force of fire, unites with sulphur, fats, and metals. 3. With alcohol, upon the spirit of sal ammoniac, the white of eggs, the serum of the blood, &c. 4. With acid and alkali growing solid together, as in the tartarium vitriolatum. 5. With fixed alkali, as in milk. And, 6. With acid fats; as in milk, serum, and the whites of eggs.