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In 1888 Theodore Vail set on foot a second series of experiments, to see if a cable could be made that was better suited as a highway for the delicate electric currents of the telephone. A young engineer named John A. Barrett, who had already made his mark as an expert, by finding a way to twist and transpose the wires, was set apart to tackle this problem.
"They know that she floats by virtue of an instrument that I have; they know that she will not float if brought in contact with the earth or if connected with it by means of some electrical conductor. They propose to establish an electrical connexion between her and the ground by throwing those wires over her with mortars, just as the life-saving men throw a life-line to a ship in distress."
In the course of this great raid Sheridan had drawn off the Confederate cavalry; fought four successful actions; released hundreds of Union prisoners and taken as many himself; cut rails and wires to such an extent that Lee could only communicate with Richmond by messenger; destroyed enormous quantities of the most vitally needed enemy stores, especially food and medical supplies; and, by penetrating the outer defenses of Richmond, raised Federal prestige to a higher plane at a most important juncture.
The damp came up from the flags in the sitting-room through the cocoanut matting and the thick carpet that covered it, which it defaced in great patches. Close to the fire the wires of the piano rusted, and had to be rubbed and rubbed every day, or half the notes went dumb. The paper, a rare luxury in those parts, began to drop from the walls.
A few paces still intervene between us and our foe, and we give vent to a shout of terror. "It is heard, and the locomotive answers it by a whistle, then slackens its pace, and after seeming to hesitate an instant backs quickly and only just in time to give us a free passage, whilst the driver, waving his cap, salutes us with "'Look out for the wires!
Then death-like stillness reigned in front once more, but several cannon thundered in the rear and a few isolated shots rang out from the wooded valleys on the left. The front ranks had reached the wire barricades. Suddenly a sharp cry of pain broke the silence and red flames shot forth from the ground, lighting up the posts and the network of wires.
Thus a simple battery may be used either as a sender or receiver of current. Two batteries adjusted to the same center line become connected in series just as if they were connected by ultron wires. In actual practice, however, two types of batteries are used; both the foco batteries and broadcast batteries.
The bracing supports which hold the outer ends of the planes are composed of wires, which offer but little resistance, comparatively, in flight. ITS ADVANTAGES. Then the vertical height of the machine is much less than in the biplane.
He stood the machine upright and lowered the rest so that it could stand unaided; and he tore away the remnant of mud-guard which Uncle Sam had sacrificed in his role of combination engine and paddle-wheel. "You've got the wires all tangled up in your spokes," Tom said; "you look like a a wreck. What do you want with those old sticks of shingles? How are you off for gas you you old tramp?"
From the adjoining room came the slow monotonous clicking of the telegraph wires, as messages passed to other stations, and only the switch watchman was visible, sitting on an inverted tub, and playing snatches from "Mascotte" and "Olivette" upon a harmonicon.
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