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I figured how to use it. Under artificial pressure, I have tried out my Miner and its equipment. "Those tubes sticking from the bottom contain something you are familiar with: non-burning and non-explosive helium gas. I have discovered a way, by their use, to create power that will melt away rock or iron--literally dissolve it into nothing! Not in an hour, or minutes. In seconds, Johns! "The pressure of the earth acts as my generator. The pressure action on the filaments of platinum, and several compositions I have no time to explain now, causes heat. Call it friction of compressed air, if you wish. As neon gases carry an electric spark, so does this helium carry the power generated by earth pressure. The pressure below earth acts on the delicate coils and points of my generator. This bit of power is carried into the helium tubes, and by a system of vacuum power, is increased millions of times. Thus, the tiny spark of a cigar lighter would electrocute a hundred men!" "I--you mean somewhat like a violet ray is increased in the lightning tubes?" Johns strove to grasp the foundation of the thing. "Yes, the foundation of it all--with the earth's pressure the power motive," Asher nodded. "So, after my Miner is on the bottom of our well, I can burn--or dissolve--a room as large as this laboratory in a few minutes. The whole thing is no mystery after you learn it--not nearly so much as radium, or radio, was. Merely creating a spark of electricity and fanning it through a vacuum and a conductor of massed gases." "But"--Johns had unconsciously dropped his voice to a whisper--"what of these strange creatures? How would you deal with them? Damn it, Asher, I think I'm beginning to believe this nutty idea of yours. Any man who can generate power with the pressure of air as it is packed by earth must know what he is talking about!" "I have but one protection against anything down there that tries to harm me," Asher said simply. "That is this--see?" * * * * * What he held up looked like an old-fashioned six shooter. It was fitted with a platinum-sealed box in the place where a cylinder would have been. The barrel looked like some queer, blue glass. "Do you see that test tube?" Asher pointed to a glass tube on a table a few feet away. "Now watch." He pressed a tiny ratchet under his thumb. A snapping, buzzing noise filled the laboratory. Johns gave an exclamation of wonder and awe.
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