"Wait!" called a man in a large motor boat. "I'll see if I can't get near enough to save you." He started to steer his craft toward Dick, but the latter cried out: "No! Keep away. The gasolene is spreading! I'll jump!" He was standing on the gunwale of the boat now, that part alone being above water. The motor had stopped, and the boat was floating amid a small sea of flame. In just the little patch where Dick stood there was, for the present, at least, no fire. Dick crouched for a spring. He saw a place where the surrounding ring of flame was the thinnest, and he aimed for that. He was going to try to jump across the belt of fire. Suddenly he straightened up. Then, with a spring, which lost much of its power because of the uncertain footing the tilting gunwale gave him, he launched himself upward and outward. Arching his hands over his head to cleave the water, and hoping in his heart that he would clear the ring of flames, Dick felt himself moving through the air. Then, with a sudden change in the little breeze that was blowing, the flames shifted so that they were wider in extent at the place for which he aimed. Those in the outer fringe of motor boats caught their breaths as they saw what had happened. Dick was headed for the center of a leaping mass of fire. An instant later he had struck the water, covered with the blazing gasolene, and had disappeared beneath the surface. "Now to save him, if we can!" cried Captain Bailey, of the large motor boat _Cypress_, as he urged his craft forward. Those in it, as they approached the outer ring of fire, looked at the luridly illuminated waters, anxious to catch the first glimpse of Dick. A dark body came to the surface. Two hands shot out, and Dick made an attempt to swim. But he ceased almost as soon as he made the first strokes, and sank back, his head going beneath the waves. Then sounded a splash from the stern of the boat. "What was that?" cried Captain Bailey. "Chandler Norton leaped after him!" was the answer. And it was Bricktop who, in swimming to shore, had been picked up by the _Cypress_, and who had leaped after Dick when he saw him sink back. Bricktop had removed most of his heavy clothing and shoes, and was more prepared than any of the others to attempt a rescue. It seemed a very long time that both he and Dick were lost to view, but it was only a few seconds ere Bricktop arose to the surface, one arm about the unconscious form of the millionaire's son. "Help me get him aboard!" Bricktop gasped. "I'm afraid something has happened to him!" Willing hands were extended to raise the silent form. Then, when the brave rescuer had been pulled over the stern, all speed was made to shore, which the other two boys had reached some time since in boats that picked them up. Fortunately there was, in the gathering of merrymakers, a physician, who at once hurried to Dick's side. He carefully examined the youth.