"We've gone as far as we need to," he said. "They'll undoubtedly send out searching parties, but if we can avoid thinking they won't be able to find us. The tunnels are a perfect labyrinth. If you care to sleep, go to it. We'll be safer sleeping than awake, for we won't be sending out thoughts so fast."
r. Bird threw himself down on the rubber floor of the tunnel and was soon asleep. Carnes tried to follow his example, but sleep would not come to him. Frantically he tried to think of nothing. By an effort he would sit for a few minutes with his mind a conscious blank, but thoughts would throng in in spite of him. Time and again he brought himself up with a jerk and forced his mind to become a blank. The hours passed slowly. Carnes grew cramped from long immobility and rose. A sudden thought intruded itself into his mind. "I might as well throw that light away," he murmured to himself. "It will be no good now. The Selom won't hurt us if they do catch us."
He reached in his pocket for the light. He was about to hurl it from him when a moment of sanity came to him. He stared about. The impulse to hurl the light away came stronger. He strove in vain to turn it on.
"Doctor!" he cried suddenly. "Wake up! They're after us!"
With a bound, Dr. Bird was on his feet.
"The light!" he cried. "Where is it?"
"In—my—hand," murmured Carnes with stiffening lips.
Dr. Bird seized the light. A beam stabbed the darkness. Less than fifty feet from them stood two moles. As the light flashed on Carnes regained control of himself.