We sped through a period when great lush jungles covered the land. The dials read 350,000,000 B. C. The gray panorama of landscape had loomed up to envelope our spectral, humming cage, then fallen away again. The shore of the sea was constantly changing. I thought once it was over us. For a period of ten million years the blurred apparition of it seemed around us. And then it dropped once more, and a new shore line showed. 150,000,000 B. C. I knew that the dinosaurs, the birds and the archaic mammals were here now. Then, at 50,000,000 B. C., the higher mammals had been evolved. The Time, to Mary Atwood and me, was a minute--but in those myriad centuries the higher numerals had risen to the anthropoids. The apes! Erect! Slow-thinking, but canny, they came to take their place in this world among the things gigantic. But the gigantic things were no longer supreme. Nature had made an error, and was busy rectifying it. The dinosaurs--all the giant reptiles--were now sorely pressed. Brute strength, giant size and tiny brain could not win this struggle. The huge unwieldy things were being beaten. The smaller animals, birds and reptiles were more agile, more resourceful, and began to dominate. Against the giants, and against all hostility of environment, they survived. And the giants went down to defeat. Gradually, over thousands of centuries, they died out and were gone.... We entered 1,000,000 B. C. A movement of Migul, the mechanism, attracted my attention. He left us at the window and went to his controls. "What is it?" I demanded. "I am retarding us. We have been traveling very fast. One million years and a few thousand are all which remain before we must stop." I had noticed once or twice before that Migul had turned to gaze through the Time-telespectroscope. Now he said: "We are again followed!" But he would say no more than that, and he silenced me harshly when I questioned. Suddenly, Mary touched me. "That little mirror on the table--look! It holds an image!" We saw very briefly on the glowing mirror the image of a Time-cage like our own, but smaller. It was pursuing us. But why, or who might be operating it we could not then guess. * * * * * My attention went back to the Time-dials, and then to the window. The Cosmorama now was proceeding with a slowing sweep of change. It was less blurred; its melting outlines could more readily be perceived. The line of seashore swept like a gray gash across the vista. The land stretched back into the haze of distance.