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the bottom of the basin, descends into the water held in a depressed part of the receptacle. The flow of water into the upper part of the basin is regulated by a valve controlled by a cam movement. The drip from this flow, falling upon the top of this receptacle, is conducted by flanges to a descending tube, which is turned upward within the receptacle, so as to form an inverted siphon, and thus deliver its water into the receptacle without permitting the gas to ascend. Carr's urinal. Carson's sink. Carson, September 25, 1860. A perforated plate opposes the passage of matter likely to choke the pipe, which enters a chamber beneath the sink. The water passes to the chamber beneath a plate whose edge is submerged in liquid and forms a trap. Marquis's slop-hopper. Marquis, September 4, 1866. A double trap is formed by compelling the water to pass by a sinuous course through a circular pan and then through an annular pan, on its way to the discharge-pipe. Air′--tr
eld of this deposit to be over 60 per cent of sulphur, of excellent quality, and in quantities practically inexhaustible. The island is within a hundred miles of the port of St. Thomas. It is also rumored that a discovery of sulphur has been made on Rabbit-Hole Mountain on the line of the Central Pacific Railway in Humboldt County, Nevada, at a place called Inferno. The mountain is said to be a mass of sulphur, yielding from 92 to 96 per cent of the pure article, and is being shipped to Carson and San Francisco at the rate of 10 to 20 tons a week. California procures some sulphur from Japan as well as from Sicily; but this Nevada product is said to excel either. Sul-phu′ric-ac′id Appa-ra′tus. An apparatus in which sulphur is sublimed and the acid condensed. Sulphuric-acid apparatus. Fig. 6068 illustrates Tait's apparatus for producing sulphuric acid by means of sulphurous and nitric-acid gases condensed by pressure into the liquid form. A is a furnace in which the s<