"It's no use tiring ourselves out for nothing," Charley said, after they had tried several of the posts without any success. "There must be an opening somewhere, and we have only to follow up the posts to find it." This they did, and, rounding the first corner of the stockade, came upon an opening in the wall, where had evidently once hung a strong gate. Pushing through the opening, they stood inside of the stockade, and, pausing, gazed around with a feeling of awe. The little enclosure was perhaps a half acre in extent. In the middle of it stood a small fort, cunningly constructed of big blocks of coquina rock. Around the little fort were grouped what had once been dwellings, but of which nothing now remained but their upright live-oak posts. A hole, in one side of the fort, which likely in some past age had been closed by a massive door, showed the enclosure to the fortress. Passing through the hole, the boys found themselves in a dim room, some forty feet square. The only light was the few rays that filtered through the loopholes, and the two lads had to pause to accustom their eyes to the dim twilight. "My, but look here!" cried Charley, as his vision cleared. Walter backed nervously toward the door, as he, too, began to perceive the grewsome objects grouped around them. Directly in front of them stood a gigantic, man-like form. Gaping holes, where the eyes should have been, stared upon them, and one long arm pointed directly at them. "Whew, that gave me a shock at first!" exclaimed Charley, with a nervous laugh of relief. "One does not expect to stumble upon dead men in armor in the wilds of Florida. Look! there's another and another and another," he continued, pointing to the other motionless figures sprawled in all sorts of attitudes about the room. At the foot of a cunningly constructed stone stairway, the suits of armor lay so close together that the boys could hardly pick their way between them. "The defenders evidently made a brave stand here at the foot of the stairway," Charley observed. "Let's go up and see what's in the upper chamber." With but little relish for further investigation, Walter followed his chum as he climbed up the stone stairs. The scene in the upper chamber was but a repetition of that below, only the floor was more thickly strewn with the suits of mail. Charley lifted the rust-encrusted visor of one, but let it drop hastily as his eyes encountered the grinning skeleton within.