"Yes, Master."

The huge mechanism advanced upon us. "If you resist me," it murmured menacingly, "I will be obliged to kill you. I—I cannot be controlled."

It chained us now with longer chains than before. Tugh looked up from his seat at the instrument table.

"Very good," he said crisply. "You may look out of the window, you two. You may find it interesting."

We were retarding with a steady drag. I could plainly see trees out of the window—gray, spectral trees which changed their shape as I watched them. They grew with a visible flow of movement, flinging out branches. Occasionally one would melt suddenly down. A living, growing forest pressed close about us. And then it began opening, and moving away a few hundred feet. We were in the glade Tugh mentioned, which now was here. There was unoccupied space where we could stop and unoccupied space five hundred feet distant.

Tugh and Migul were luring the other cage into stopping. Tugh wanted five hundred feet of unoccupied space between the cages when they stopped. His diabolical purpose in that was soon to be disclosed.

"700 A. D.," Tugh called.

"Yes, Master. I am ready."