incredible speed, bounding across the zenith like a shooting star and sinking down in the west. Hardly had it disappeared when there was an up-gush of gray light from the eastern horizon, and then the sun leapt up, red and flaming, and hurtled across the sky with even greater speed. I caught a glimpse of Angkor beneath, bathed in tropical sunlight. And a half-minute before it had been deepest night! "A deadly sickness seized me, and while I strove against it the sun raced down into the west and it was night again, with the shining moon again flashing across the sky with nightmare speed. Again it disappeared and again the sun sprang up and rocketed headlong across the zenith. And for the first time there came to my numbed brain some realization of what was happening. "This inexplicable thing that held me—this being of changing mists and vapors—was taking me on through time. It was whirling me on into the future, with some undreamed-of power of its own. "The sun was racing across the sky with comet speed, now, a streak of golden light, and day and night followed each other like the flipped leaves of a book, faster and faster. In a few minutes they had become indistinguishable, had merged into a green twilight in which I could see but dimly the ground below. And even as we thus sped on through time, with ever-increasing speed, the thing that held me began to move through space also, and I caught a glimpse of ruined Angkor sliding away from beneath me. "The thundering roar of the winds grew even louder as we moved simultaneously through time and space. I caught fragmentary glimpses of land flashing by beneath, with tremendous speed. And all the while I hung there in the grip of the thing, held by the smoky mist-spirals, swinging helplessly around and around the three circles of radiant green light at the thing's center. "With a sudden surge of desperate courage, I tried to move in the remorseless grip that prisoned me, endeavored to raise my right hand to my belt, putting all my force into the effort. Slowly my hand came up, inch by inch, struggling against the unseen grip of iron that grasped me. It came up, with infinite slowness, until it was high enough to grasp the automatic in my belt-holster. I clasped the pistol's stock and threw off the safety catch, then, with another great effort, swung up the pistol until it pointed directly at the triangle of radiant orbs, and pulled the trigger. "The report snapped out thinly above the thundering of the winds. And