in chemistry, is performed by Coagulum 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 vitreus and some other preparations. 2. With oil, which, by the force of fire, unites with sulphur, salts, 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 tartarum vitriolatum. 5. With fixed alkali, as in milk. And, 6. With acid salts; as in milk, serum, and the whites of eggs.