The cover closed overhead. A tiny green light winked on. Within the boat, lurid in the green glow, the four brutemen moved about with swift activity; the soft voice of Talon was directing them; his great head was raised on his hands as he followed their movements. They bolted the metal over, adjusted other mechanisms which now came into use at the stern. A lessening of the flow of gas from beneath the hull; the water filled the chamber there. The rear power tube now pointed downward, to dip the bow. Other tubes, one on each side below the water line, pointed upward, with powerfully ejected streams of gas. The bow of the boat dipped; it sank beneath the surface. Jim had no idea then of the mechanisms, but he knew the boat was under water. One of the great heads was busily adjusting a mechanism to purify the air they were breathing. Another was seated at what seemed a mirror; gazing ahead through the water, steering the boat with his fingers on a row of buttons which governed the controls. Another hour. Jim and Ren whispered occasionally. The boat was speeding uninterruptedly beneath the surface. At last Jim called, “Talon?” “Yes. What is it?” the head of Talon answered him. “Come here. You can talk better now, can’t you?” Talon evidently was amused at the imperative tone. “Yes. I can talk better now.” He came hitching forward; his great face was broken by a grotesque grin. “What is it?” “Who are you?” Jim demanded. “What do you want of us? Where are you taking us?” Talon was willing to talk. He sat, his fingers toying with the metal ornament, his head resting against the side of the boat for support. He and his fellows were of a race which he called the Intellect. They came from a distant world in the sky, a dark planet, satellite of one of the remote suns up there. Five thousand or more of them, adventurous Intelligences like himself, had built a great ship and come to this foreign world. They had landed in mountains, a wild, desolate country. Their ship had been destroyed, irreparably broken in landing. They could not get back. There were, he explained, in this distant world two distinct races of beings, those like himself, for countless ages bred to develop the intellect so that their bodies shriveled and dwindled from disuse, all their physical powers nearly gone. And another, quite opposite race, bred for physical strength and power, the brutemen, of slight mental capacity but powerful of body. He gestured. “You see four of them? They do our bidding unquestioned. They supply the body for us; we are the mind.” “You ride on their shoulders,” said Jim. Talon’s eyes gleamed. “We more than ride on them.” He showed Jim where from beneath his head a ropelike sinew depended. “This we fasten upon a nerve-center of their backs. Their little brain is dulled, unconscious then of existence. Our brains take command.