And later on he did take them on a trip, a thousand miles underground,--but that is another story to tell. It was about a week later that the voyagers came within sight of Key West. "Off there lies the United States," said Mr. Henderson. "Hurrah for home!" cried Mark. Three days later they landed at a small Florida town. The sight of the _Porpoise_ attracted throngs of people to the dock where she tied up. Among them was a newsboy. "Get me all the papers for the past month," said Jack. "I want to see what the news is." "Same here," put in Mark, and the papers were soon brought. "Hurrah!" exclaimed Jack, as soon as he had looked at several of the sheets. "What is it?" asked Mark, who was unfolding a paper. "Anarchists Confess," read Jack. "Two Englishmen Admit They Blew Up Hotel Where Lord Peckham Was Stopping. No Suspicion Attaches to Two Youths Who So Mysteriously Disappeared!" "Hurrah!" joined in Mark. "Those are only the head lines," went on Jack. "There's a long story, and I guess it lets us out." The two boys were completely cleared of the slightest shade of suspicion of the outrage, and there was even an interview with the English detective in which he admitted that he was wrong. A week later the _Porpoise_ tied up at her own dock, whence she was launched. "Back again," remarked the professor as he stepped ashore. "I've been to the south pole, and to the north pole. I wonder where I shall go next?" "To the big hole and underground," suggested Jack. "We shall see," said Mr. Henderson with a twinkle in his eyes. THE END The Dave Dashaway Series By ROY ROCKWOOD Author of the "Speedwell Boys Series" and the "Great Marvel Series." =12mo. Illustrated. Price per volume, 60 cents, postpaid.= =Never was there a more clever young aviator than Dave Dashaway. All up-to-date lads will surely wish to read about him.= [Illustration: DAVE DASHAWAY THE YOUNG AVIATOR] DAVE DASHAWAY THE YOUNG AVIATOR _or In the Clouds for Fame and Fortune_ This initial volume tells how the hero ran away from his miserly guardian, fell in with a successful airman, and became a young aviator of note. DAVE DASHAWAY AND HIS HYDROPLANE _or Daring Adventures Over the Great Lakes_ Showing how Dave continued his career as a birdman and had many adventures over the Great Lakes, and how he foiled the plans of some Canadian smugglers. DAVE DASHAWAY AND HIS GIANT AIRSHIP _or A Marvellous Trip Across the Atlantic_ How the giant airship was constructed and how the daring young aviator and his friends made the hazardous journey through the clouds from the new world to the old, is told in a way to hold the reader spellbound. DAVE DASHAWAY AROUND THE WORLD _or A Young Yankee Aviator Among Many Nations_