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Updated: May 27, 2025
The telegraph wires which were borrowed to demonstrate the utility of the telephone proved far from perfect for the work at hand. Many of the wires were rusted and the insulation was poor. The stations along the line were likely to cut in their relays when the test was in progress, and Bell's instruments were not arranged to overcome this retardation.
There on the floor of the office lay a charred, shapeless, unrecognisable mass. What was that gruesome odour in the room? Burned human flesh? I recoiled from what had once been the form of a woman. McCormick uttered a cry, and as I turned my eyes away, I saw him holding a wire with the insulation burned off. He had picked it up from the wreckage of the floor.
"Take two swallows, no more," he said, holding the open canteen to her mouth. "Just summer change, that's all. It happens to us every year on Anvhar only not that violently, of course. In the winter our bodies store a layer of fat under the skin for insulation, and sweating almost ceases completely. There are a lot of internal changes too. When the weather warms up the process is reversed.
Firestopping all exterior walls and interior partitions not only cuts down fire risk but adds greatly to insulation from both heat and cold. Fires that originate in the cellar frequently travel upward in the dead-air spaces behind lath plaster. For houses already built, the best means is to pack the walls with pulverized asbestos.
Even since the insulation of Britain a great many new plants and animals have been added to our population, both by human design and in several other casual fashions. The fallow deer is said to have been introduced by the Romans, and domesticated ever since in the successive parks of Celt and Saxon, Dane and Norman.
The insulation was burned off the wires, the wires were fused together, and the storage-battery looked as if it had been burned out. A flicker of the eyelid and Norton seemed to regain some degree of consciousness. He was living over again the ages that had passed during the seconds of his terrible fall. "Will they never stop? Oh, those sparks, those sparks! I can't disconnect it.
And these places we call the upper region, account the air between the high places and the low, as a middle region. We use these towers, according to their several heights and situations, for insulation, refrigeration, conservation, and for the view of divers meteors as winds, rain, snow, hail; and some of the fiery meteors also.
There was a sound of falling shale on the slope, following the disturbance of a quick foot. Vesta was coming. Unseen and unheard through the insulation of his thoughts, she had approached within ten rods of him before he saw her, the moonlight on her fair face, glorious in her uncovered hair.
For purposes of insulation the wires were neatly covered with cotton-yarn and then saturated in a bath of hot gum-shellac, but this treatment proved defective in insulating properties, for when ten miles of line had been completed the wires were found to be wholly useless for electric conduction.
Holes had to be dug, poles cut, barked, hauled, and set up, and the wires strung. While his men set the poles, Charley himself, with a helper, strung the wires. At this job he needed no instruction. His experiences with the wireless were now of great value to him, for he understood about insulation, grounding, short circuits, and the like as well as any skilled lineman.
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