At the other end of the enclosure, near the foot of the tower building, the great lizard eyed him unblinkingly, its tremendous jaws gaping to reveal a cavernous mouth that was hideously lined with bright orange colored membrane. Then, squatting lower with every step it took, like a mountainous cat about to spring on its prey, it began to stalk on its tree-like legs toward the tiny creature that had leaped into its yard with it. Brand whirled this way and that, mechanically seeking a way out. There was none. The walls of the great enclosure were not like the wall of the tower. Here were no rough hewn stones, with protruding ridges of mortar set between. These walls were as smooth as glass, and just as smooth was the curved wall of the dome building behind him. The monstrous beast stalked nearer, almost on its belly now. As it advanced, the great tail stirred up a cloud of reddish dust, and left behind it a round deep depression in a surface already crisscrossed with a multitude of similar depressions. A bellowing hiss came from its gaping mouth, and it increased its pace to a thunderous, waddling rush. CHAPTER IX _Into the Enclosure_ In the torture chamber Dex wavered slowly back to consciousness to get the growing impression that he was being immersed in a bath of liquid fire. Burning, intolerable pain assailed him with increasing intensity as his senses clarified. At last he groaned and opened his eyes, for the moment not knowing where he was nor how he had come to be there. He saw strange torture instruments and tall monstrosities with pumpkin-shaped heads surrounding him closely in a semicircle, and staring at him out of great, dull eyes. Remembrance came back with a rush, and he gathered his muscles to spring at the hateful figures. But he could not move. At waist and throat, at wrists and ankles, were hoops of metal. He closed his eyes again while the burning waves of invisible fire shot through him recurrently from head to foot. Dully he wondered that he was still alive. His last recollection had been of the Rogan leader pointing his shock-tube full at him, his shapeless countenance working with murderous fury. However, alive he was; and most unenviably so! His hands, circumscribed to a few inches of movement by the bonds on his wrists, felt the smooth substance at his back. And with a thrill of horror he realized his position: he was crucified against the metal slab on which the slave had writhed in agony a short half hour ago. Again he strained and tugged, vainly, to get free. Off to one side, pressed back against a huge glass experimental tank, he saw the beautiful Greca, her eyes wide with horror; and caught her frantic pleading message to her "Great White One." * * * * *