intense white light had suddenly broken into being on the platform beneath us, a beam of blinding light that stabbed straight up toward us, bathing the cruiser in its unearthly glow. And suddenly our ship was falling! Sarto Sen sprang to the controls, wrenched around the power-lever. "That ray!" he cried. "It's attractive!—it's pulling us down!" Our ship was vibrating now to the full force of its generators, but still we were falling, plunging headlong down toward the round platform beneath. I glimpsed Sarto Sen working frantically with the controls, and heard a hoarse cry from Hal Kur. There was a blinding glare of light all around us, now, and through the window I saw the platform below rushing up toward us with appalling speed. It was nearer, now ... nearer ... nearer ... crash! 3 I think that in the minute after the crash no one in the conning-tower made a movement. The blinding ray outside had vanished at the moment of our crash, and we were now lying sprawled on the little room's floor, where the shock of the collision had thrown us. In a moment, though, I reached for a support and scrambled to my feet. As I did so there came shouts from the hull beneath us, and then a loud clang as one of the cruiser's lower doors swung open. I sprang to the window, just in time to see our six engineers pour out of the hull beneath me, emerging onto the platform on which our ship rested, and gazing about them with startled eyes. I ripped open the little door in the conning-tower's side, to shout to them to come back, and even as I did so saw one of the men run back into the cruiser as though in fear. The others were staring fixedly across the broad platform, and in that moment, before I could voice the warning on my lips, their doom struck. There was a quick sigh of wind, and from across the platform there sprang toward them a tiny ball of rose-colored fire, a ball that touched one of the men and instantly expanded into a whirlwind of raging flame. A single moment it blazed there, then vanished. And where the five men had stood was—nothing. Stunned, stupefied, my eyes traveled slowly across the surface of the great platform. Strange, huge machines stood close-grouped upon it, great shining structures utterly unfamiliar in appearance. At the center of this group of mechanisms stood the largest of them, a great tube of metal fully a hundred feet in length, which was mounted on a strong pedestal and which pointed up into the sky like a great telescope. It was none of these things,