His face clouded. "That's the trouble. Up on the ice I was working on that problem, and had managed secretly to rig up a contrivance that would have done the trick. But we can't go back for it. That way is blocked." He mused, half to himself. "If only we could lay our hands on a solar disintegrating machine, the difficulty would be solved." At the name, Abud's face, that had been a study in blank incomprehension, lit up. "Solar disintegrating machine?" he inquired. "Why there's one stationed not more than a few hundred yards away from here. This area, 2-RX, was my sector, you know." "Of course, of course," shouted Keston, "I'd quite forgotten. The very thing. You're not half bad, Abud, if you'd only stop trying to rely on brute strength instead of brains," he concluded. Abud said nothing, but I noticed a quick flash of hatred that passed in an instant, leaving a blank countenance. I thought to myself, "You'll bear watching, my fine fellow. I don't trust you at all." * * * * * Keston was speaking. "We'll have to wait until nightfall. The master machine won't expect us down at the base, so I'm positive the search-rays won't be focussed along the ground. We'll sneak to the machine, smash its visor and radio units, so it won't give the alarm, and haul it back. Then I'll show you what's next to be done." Night came at last, leaden footed, though we were burning with impatience. Very softly we crawled out of the cave, three shadows. Fortunately there was no moon. The great Glacier loomed ominously above us, dimly white. High overhead hovered the green signal lights of the machine planes, their search rays focussed in blinding glares on the rim of the upper ice. It did not take us long to find the dark bulk of the disintegrator. It was a squat cylinder, for all the world like a huge boiler. At one end there up-ended a periscope arrangement which broadened out to a funnel. In the funnel was a very powerful lens, cut to special measurements. The light of the sun, or any light, for that matter, was concentrated through the lens onto a series of photo-electric cells, composed of an alloy of selenium and the far more delicate element, illinium. A high tension current was there created, of such powerful intensity that it disintegrated the atoms of every element except osmium and indium into their constituent electrons. Consequently the interior as well as the long slit nozzle orifice at the other end, were made of these resistant metals. Through a special process the tremendously powerful current was forced through the wide-angled nozzle in a spreading thin plate ray that sheared through earth and rock and metals as if they were butter. Such was the machine we were after. * * * * *