The ant continued to dance, and the ant bear continued to crawl up the side of the pit, when suddenly the edge of the crater crumbled beneath the ant, and in an instant he, too, was catapulted down into the arena. A shower of gravel smote the bear, and he could no more resist the tropism which it excited in his make-up than a sunflower can resist turning its face to the sun. With a swift somersault he seized the surprised Formian between his jaws, and then backed slowly down into the depths of the sand at the bottom of the pit. Cabot watched the placid ant bear and the frantically but futilely struggling ant man until both had disappeared beneath the surface; then he heaved a sigh of relief, and looked for a way to escape before his jailer should digest the Formian and stir abroad again in search of further prey. But he could see nothing which held out any hope. Then his scientific mind came to his rescue, and he strove to recall all that he had learned of the diminutive ant bears of the earth during his childhood. He reviewed each item of their habits, until he recollected the furrows which they dig to lure their prey into their pits. He remembered seeing similar furrows in the plain where he now was. One such might furnish a way out. So he studied the edges of the crater until he located a slight dent at one side. Lowering himself from his perch, he cautiously made his way along the side of the pit until he came directly below the dent. There he started digging frantically, and soon had the satisfaction of seeing that the sliding sand was forming a gully in front of and above him. Step by step he crawled up this gully, still digging, ever digging, until he had nearly gained the top, when he heard a click behind him. Stopping digging, he glanced around, and there was the ant bear emerging from its lair, intent on eating him for its dessert. With one last supreme effort, Cabot scrambled over the edge into the furrow, and started running along it with the beast in hot pursuit. The furrow got shallower and shallower. Cabot could now see above the level of the plain as he ran on. It was like running in a dream. The shifting sands gave way with every step, so that progress seemed almost impossible, while the nightmare creature behind him gained, steadily gained. And then Cabot reached the end of the furrow and raced out upon the open plain. To his surprise the bear stopped abruptly. Evidently there were rules-of-the-game which governed even the crude mental processes of this beast, and one of these rules was: “No fair catching one of the other side when out of your territory.” But Myles did not wait to see whether this rule held. He sped on to the edge of the plain and to the shelter of the surrounding woods. There he regained his toga and revolver, and then continued into the depths of the forest.