* * *
The doctor's eyes gleamed and his fingers reached out to press a bell.
A servant appeared almost at once.
"Bring me a dog," snapped the old man. The servant disappeared.
"Young man," said Dr. White, "I am going to show you how I know I can do it. I have done it before, now I am going to do it for you. I have sent dogs and cats back to the fourth dimension and returned them safely to this room. I can do the same with men."
The servant reappeared, carrying in his arms a small dog. The doctor stepped to the control board of his strange machine.
"All right, George," he said.
The servant had evidently worked with the old man enough to know what was expected of him. He stepped close to the floor disk and waited. The dog whined softly, sensing that all was not exactly right.
The old scientist slowly shoved the lever toward the right, and as he did so a faint hum filled the room, rising to a stupendous roar as he advanced the lever. From both floor disk and upper disk leaped strange cones of blue light, which met midway to form an hour-glass shape of brilliance.
The light did not waver or sparkle. It did not glow. It seemed hard and brittle, like straight bars of force. The newspaperman, gazing with awe upon it, felt that terrific force was there. What had the old man said? Warp a third-dimensional being into another dimension! That would take force!