Southward from his grave marched three grim and silent men. To the best of Bradley's reckoning they were some twenty-five miles north of Fort Dinosaur, and that they might reach the fort on the following day, they plodded on until darkness overtook them. With comparative safety fifteen miles away, they made camp at last; but there was no singing now and no joking. In the bottom of his heart each prayed that they might come safely through just this night, for they knew that during the morrow they would make the final stretch, yet the nerves of each were taut with strained anticipation of what gruesome thing might flap down upon them from the black sky, marking another for its own. Who would be the next? As was their custom, they took turns at guard, each man doing two hours and then arousing the next. Brady had gone on from eight to ten, followed by Sinclair from ten to twelve, then Bradley had been awakened. Brady would stand the last guard from two to four, as they had determined to start the moment that it became light enough to insure comparative safety upon the trail. The snapping of a twig aroused Brady out of a dead sleep, and as he opened his eyes, he saw that it was broad daylight and that at twenty paces from him stood a huge lion. As the man sprang to his feet, his rifle ready in his hand, Sinclair awoke and took in the scene in a single swift glance. The fire was out and Bradley was nowhere in sight. For a long moment the lion and the men eyed one another. The latter had no mind to fire if the beast minded its own affairs--they were only too glad to let it go its way if it would; but the lion was of a different mind. Suddenly the long tail snapped stiffly erect, and as though it had been attached to two trigger fingers the two rifles spoke in unison, for both men knew this signal only too well--the immediate forerunner of a deadly charge. As the brute's head had been raised, his spine had not been visible; and so they did what they had learned by long experience was best to do. Each covered a front leg, and as the tail snapped aloft, fired. With a hideous roar the mighty flesh-eater lurched forward to the ground with both front legs broken. It was an easy accomplishment in the instant before the beast charged--after, it would have been well-nigh an impossible feat. Brady stepped close in and finished him with a shot in the base of the brain lest his terrific roarings should attract his mate or others of their kind.