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The best modern appliances were used in the construction of the dam. The granite material for the facing was obtained from Granite Mountain, near Marble Falls, being hauled from the quarry to the dam over the Austin and Northwestern Railway, a distance of 70 miles, and delivered at the east end of the dam, as shown in Pl. IV, A. The granite blocks were of average dimensions and weighed 4 tons each. The four classes of material used-i. e., the limestone rubble, the cement, the sand, and the granite-were transported from the end of the dam to place by a cable 2½ inches in diameter, stretched between two towers-one on the east and the other on the west bluff-1,350

feet apart. The cable was anchored to "dead men" at the ends, weighted down by stone. The saddle shown in fig. 4 was specially designed for this work, and ran on the main cable. The wire ropes were known as the "hauling rope," the "hoisting rope," and the "button rope." The hauling rope was attached to the lower part of the frame work of the saddle, passed over pulleys at both towers, and wound around a drum under the east tower. The endless hauling rope was operated by an engine to which its drum was attached. It was completely under the control of the operator, and could be stopped in any position along its course. After being checked in the