Keeping now to the shelter of the trees, he went forward another quarter of a mile. If Tudor had advanced with equal speed they should have come together at that point, and Sheldon concluded that the other was circling. The difficulty was to locate him. The rows of trees, running at right angles, enabled him to see along only one narrow avenue at a time. His enemy might be coming along the next avenue, or the next, to right or left. He might be a hundred feet away or half a mile. Sheldon plodded on, and decided that the old stereotyped duel was far simpler and easier than this protracted hide-and-seek affair. He, too, tried circling, in the hope of cutting the other's circle; but, without catching a glimpse of him, he finally emerged upon a fresh clearing where the young trees, waist-high, afforded little shelter and less hiding. Just as he emerged, stepping out a pace, a rifle cracked to his right, and though he did not hear the bullet in passing, the thud of it came to his ears when it struck a palm-trunk farther on. He sprang back into the protection of the larger trees. Twice he had exposed himself and been fired at, while he had failed to catch a single glimpse of his antagonist. A slow anger began to burn in him. It was deucedly unpleasant, he decided, this being peppered at; and nonsensical as it really was, it was none the less deadly serious. There was no avoiding the issue, no firing in the air and getting over with it as in the old-fashioned duel. This mutual man-hunt must keep up until one got the other. And if one neglected a chance to get the other, that increased the other's chance to get him. There could be no false sentiment about it. Tudor had been a cunning devil when he proposed this sort of duel, Sheldon concluded, as he began to work along cautiously in the direction of the last shot. When he arrived at the spot, Tudor was gone, and only his foot-prints remained, pointing out the course he had taken into the depths of the plantation. Once, ten minutes later, he caught a glimpse of Tudor, a hundred yards away, crossing the same avenue as himself but going in the opposite direction. His rifle half-leaped to his shoulder, but the other was gone. More in whim than in hope of result, grinning to himself as he did so, Sheldon raised his automatic pistol and in two seconds sent eight shots scattering through the trees in the direction in which Tudor had disappeared. Wishing he had a shot-gun, Sheldon dropped to the ground behind a tree, slipped a fresh clip up the hollow butt of the pistol, threw a cartridge into the chamber, shoved the safety catch into place, and reloaded the empty clip.