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to a vessel of water that condenses any mercurial vapor which passes over when the stopcock g is opened. The cock regulates the pressure of vapor in the cylinder, which has a door by which it is charged and uncharged. Staats's amalgamator. Sturges's amalgamator. Staats, March 13, 1866. The ore is placed in a closed vessel in company with an allowance of quicksilver, and is then rotated on its horizontal axis above the fire in the furnace. The fumes eliminated by the heat from the mercury penetrate the material as it is agitated by the rotation of the vessel. Sturges, September 18, 1866. The barrel amalgamator has a pocket to retain the mercury and distribute it to the ore as the barrel revolves. The cylinder is stayed by diametric bolts. gold. The Battery Process. In the amalgamation of gold ores the auriferous quartz is broken by a crusher into pieces of about a pound weight, and is then stamped. For wet crushing, stamps are used weighing from five to nine hundr