He hurriedly glanced down at the ground at his feet, and promptly found what seemed to be the reason for his partial freedom from the paralysis. In setting his body down the last time Zehru had moved Blake slightly. His right foot now rested upon a corner of the discarded topcoat lying half-buried there in the blue-gray dust. The heavily rubberized cloth apparently acted as an insulating sheet that prevented the effective grounding of the paralyzing force that streamed down through Blake's body from the overhead disk. Consequently all portions of his body between the coat and the disk were free from the paralysis. For a moment Blake wondered at Zehru's carelessness. Then he realized that the insulating qualities of rubber would naturally be unknown to a Xollarian. Noting that Zehru was busy at the moment with his work upon Mapes, Blake quickly grasped at the faint chance the presence of the rubberized cloth offered him. Working with infinite slowness and caution, he edged his right foot over an inch at a time, dragging the rest of his body with it. Luck was with him. Zehru continued, absorbed in his work upon Mapes. The Xollarian's telepathic powers apparently functioned only with the aid of the red ray, for he remained oblivious of Blake's actions. One final cautious dragging movement, and Blake's entire body was upon the cloth, with every muscle again vibrantly alive. * * * * * Blake stood there motionless, faking paralysis, while his brain raced in an effort to figure the best use to make of his present advantage. He was still trapped, not daring to reach even a hand beyond the protection of the cloth underfoot. The first essential of any effort at escape would have to be a lunge of sufficient power to take him safely beyond the area of the disk's influence. Blake's first thought was to hurl himself through the barrier wall upon Zehru, trusting to sheer surprise to overwhelm the Xollarian, but he quickly dismissed that plan. It left too many elements in Zehru's favor. There was a tube-like weapon thrust in a belt around Zehru's middle and there were probably a dozen other different weapons lying handy to his reach among the apparatus on the platform. The deadly purple mists beyond the wall would alone in all probability overcome Blake before he could batter Zehru down. By far the best plan was to stage the battle inside the enclosure where Blake would be in his own native element. If he could yank Zehru inside the wall he would have him away from contact with his mechanical weapons and battling in an atmosphere inherently poisonous to him. Under those circumstances, Blake felt that he might have an even chance in a hand-to-hand combat with the powerful but slow-footed Xollarian. Once Zehru was eliminated, escape back to Earth should be a simple matter. The silver gate, with its automatic mechanism needing only the closing of a lever, was ready and waiting there in the enclosure behind them.