We crossed the avenue; plunged into the shadows of the park. To the east the leaden sky over the house-tops was brightening with the coming dawn. We crouched in the shrubbery by the edge of a path. Trees were over us; a lake near by; a winding park roadway off there with lights along it; the shadowy building of the Museum at the edge of the park was in the distance. Lea had marked well this landscape! It was familiar to her, as it was to Alan and me, who had been here so often, and had seen the vision of it on the screen last night. This open spread of lawn here, with the lake near it, this path bordering it. My mind swung back. A forest glade was here, three hundred years ago. Three thousand years ago, what? A virgin forest? And three hundred thousand years ago? Primitive man, hiding here--as we of 1945 now were crouching? This same Space; the spread of this lawn in Central Park--what would it be in another hundred years? Or a thousand? This little Space, from the Beginning to the End so crowded with events and only Time to hold them separate! * * * * * Lea was in advance of us. I whispered to Alan. "That tower we saw here--coming again?" "Of course! Don't you think so? She's waiting for it--expects it." This empty lawn--no! Not empty! The tower materialized all in an instant. It stood gray and silent. We were on our feet--Alan and Nanette off to one side. The tower doorway opened. The young man stood there with the light behind him. Stood gazing-- No vision this! Reality! Empty space, two moments ago. Then a phantom, a moment ago. But a real tower, now! Solid. As real, as existent--now--as these rocks, these trees! Suddenly, even nearer at hand, another shape materialized. The Turber vehicle! It came from nothing into visibility. It settled like a giant airship upon the lawn. Its door opened. Figures sprang out. There was a moment when we were all too surprised to move. Lea gave a cry. The young man from the tower rushed toward us. From the Turber aero three men came running. They were no more than twenty feet away. "Ed! Run!" I became aware that Alan had turned to run with Nanette. She stumbled, fell, and before he could pick her up they were caught. I leaped for them. It was Turber; and his Indian; and a huge, half-naked man in an animal skin. He swung a stone ax. Alan was fighting; he fired his revolver, but missed. The ax struck him; he went down, but he was not badly hurt, for from one knee he fired again. The giant with the ax swayed and dropped to the grass. I leaped for Turber. Another man came running from the aero. Turber was holding Nanette; he flung his coat over her to stifle her screams. I did not dare fire. I launched into them. From behind something struck me. I dropped; but I recall that I was still struggling--gripping Turber's legs, but he kicked me off. Then some one leaped on me; struck me again. I fell insensible.