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As it melts at about 120 degrees F., and boils at about 600 degrees F., it can be greatly superheated, and used when smoking, so as to penetrate deeply into wood or porous material. It is perfect for strengthening skulls; most rotten examples slopped with paraffin, and finally soused for a few seconds so as entirely to cover the bone in and out, will travel safely, if not crushed.
Into this he thrust the blade of his stone knife, and as it became superheated he would withdraw it, touching a spot near the thin edge with a drop of moisture. Beneath the wetted area a little flake of the glassy material would crack and scale away. Thus, very slowly, the ape-man commenced the tedious operation of putting a thin edge upon his primitive hunting-knife.
A hopper dropped metallic balls down into a bored-out barrel, where they were sucked into the blast of superheated steam from the storage cylinder. At a touch of the trigger a monstrous cloud of steam poured out. It was six feet from the gun muzzle before it condensed enough to be visible. Then a huge white cloud developed; but the metal pellets went on with deadly force.
The wind was bringing its element of peril to add to the conflagration's own; it caught the white heat from the blazing mass of buildings and started it sweeping southward in a devastating wave of superheated fluid air. As the man on the Common had said, this was a fire but rather was it Fire, the essence of the god, the very burning breath of Loki.
A blast as of superheated air smote upon them one moment, while in the next they were whirled through an icy atmosphere, then tossed dizzily to and fro, as their too-frail vehicle spun upward as though on a journey to the far-away stars.
Winthrop looked at the Doctor so steadily, and for so long a time, that the eyes of the young man sought the floor and the ceiling; and his sneer changed to an expression of discomfort. "I am not," said Winthrop. "I am the District Attorney of New York." His tones were cold, precise; they fell upon the superheated brain of Dr. Rainey like drops from an icicle.
The steam becomes superheated in traversing the regenerators, B', and in this state enters the bottom of the generator through the flue, E'. In passing into the incandescent fuel that fills the generator, the steam is decomposed, and there forms carbonic oxide, while hydrogen is liberated. The mixture of these two gases with the hydrocarburets furnished by the fuel constitutes water gas.
The mass of superheated air, generated by the varnishes and other material in the extension, was forcing the flame out from the window in the shape of a great fan. The ladder was beginning to blaze. Bert paused and looked down to the ground. The distance was not too great for him to jump, had he been alone, but, with the child, it might mean that both would be seriously injured.
A radio call from Tom brought a sleek, strange-looking craft zooming up to join them. It was the Sea Hound, latest and largest model of Tom's amazing diving seacopter. It had an enclosed central rotor, powered by atomic turbines, with reversible-pitch blades for air lift or undersea diving. Superheated steam jets provided forward propulsion in either element.
Nearly the whole day had been consumed for the trip, during which time he had sat in the stuffy, superheated car, whose foul air reeked of cheap tobacco and drying garments, and listened to the guffaws of the train-crew as they regaled each other with vile stories and long accounts of revolting personal experiences among the dives of cities.
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