The other fellow's thoughts came over the wall, pounding against Bart's sub-conscious. "You consider yourself a man of great intelligence," it went on, "but your lack of imagination makes you less than mediocre. And as for your mind-power, well, you see you cannot cross my mental barrier."

"That's not entirely conclusive. There may be a catalyst here in this area which works in conjunction with your thought-processes and not mine. You're familiar with conditions here, while I only know the earth."

"You are hardly a challenge to me. However, to satisfy you that you have practically no control, let us make a test on your home ground."

"All right. You propose the test."

"Let us see ... if you can re-enter your former body while I am willing you to stay here, on the other side of that wall."

"Ahah. You're trying to trick me."

"I knew before I proposed my plan you would make exactly that excuse in order to escape my challenge. Even in excuses you lacked imagination."

"Okay, it's a deal." Bart was mad. "Start concentrating. I'll show you the power of my mind, both now and after I resume that shell." Bart was furious. He tried to leave the place by the wall. He seemed stuck. There were waves like laughter vibrating against the glass. Bart strained and saw that he had come away a little. He tried again and again. There was a little more distance gained. He tried to build the picture of the operating-room in his mind and while he was doing this a flash of Vivian exploded his mind. With that quick image, he felt himself free to drift downward.

There indeed was the hospital. Bart hurried to the operating-room, hovering near the ceiling light, watching the operating team below.

"He's gone, doctor." The anesthetist looked at Jonas. "Respiration's stopped altogether."