The single foot continued its attack, striking the tree regularly about fifty feet above the ground. At that height the foot was about the same diameter as the tree, and the weight behind it was formidable. Yet such action seemed pointless, because damage to the tree would not affect the man behind it. Or was he underestimating Quink again? The pounding ceased, and he poked his head cautiously around once more. Was the thing retreating? Somehow he did not expect it to give up easily; it had demonstrated too much savvy and determination for that. It was a remarkable animal, not only for its size. Three legs stood in a tripod, while two came up simultaneously. Tinnerman's brow wrinkled; it did not seem possible for it to maintain its balance that way. But it was acting with assurance; it had something in mind. The two feet rose, together, one held just above the other. In awe, Tinnerman watched the lofty body topple forward, unable to stand upright in such a position. Suddenly the two feet thrust forward with staggering power; the entire body rocked backward as they smashed into the tree. And this time the timber felt it. A gunshot explosion rent the air as the fibers of the trunk split and severed, wood splaying; and the large roots broke the ground like sea monsters as the entire tree hinged on its roots. Now Tinnerman could see how the clearing had been formed. The parent opened a hole in the forest, so that the baby could feed on the little saplings. As the vegetation grew, so did the child, until tall enough to reach the foliage of full sized trees. A few more blows would fell this one. Tinnerman waited for the next impact, then fled, hidden from view, he hoped, by the tilting trunk. The creature continued its attack, unaware that the real quarry had gone. * * * * * Tinnerman picked up the trail, human prints this time. Abel should have escaped during the distraction, and would be heading for the ship. The mighty forest was quiet now, except for a slight rustle ahead. That would be Abel. Tinnerman moved without noise instinctively, disinclined to interrupt the medication of the great trees' eternal beauty. And knew that he was a fool, for the forest hardly cared, and the quinquepedalian, with all its decibels, would not worry about the distant patter of Human feet. "Don," he called, not loudly. Abel turned at once, a smile on his face. "Tinny! I'm glad you got away." He too was careful of his volume; probably the monster could not hear, but it was pointless to ask for trouble. "You seemed to know what you were doing. But I was afraid you had not made it. I would have waited for you if--"