TOM SWIFT AND HIS SUBMARINE BOAT or Under the Ocean for Sunken Treasure by VICTOR APPLETON CONTENTS I News of a Treasure Wreck II Finishing the Submarine III Mr. Berg Is Astonished IV Tom Is Imprisoned V Mr. Berg Is Suspicious VI Turning the Tables VII Mr. Damon Will Go VIII Another Treasure Expedition IX Captain Weston's Advent X Trial of the Submarine XI On the Ocean Bed XII For a Breath of Air XIII Off for the Treasure XIV In the Diving Suits XV At the Tropical Island XVI "We'll Race You For It!" XVII The Race XVIII The Electric Gun XIX Captured XX Doomed to Death XXI The Escape XXII At the Wreck XXIII Attacked by Sharks XXIV Ramming the Wreck XXV Home with the Gold TOM SWIFT AND HIS SUBMARINE BOAT Chapter One News of a Treasure Wreck There was a rushing, whizzing, throbbing noise in the air. A great body, like that of some immense bird, sailed along, casting a grotesque shadow on the ground below. An elderly man, who was seated on the porch of a large house, started to his feet in alarm. "Gracious goodness! What was that, Mrs. Baggert?" he called to a motherly-looking woman who stood in the doorway. "What happened?" "Nothing much, Mr. Swift," was the calm reply "I think that was Tom and Mr. Sharp in their airship, that's all. I didn't see it, but the noise sounded like that of the Red Cloud." "Of course! To be sure!" exclaimed Mr. Barton Swift, the well-known inventor, as he started down the path in order to get a good view of the air, unobstructed by the trees. "Yes, there they are," he added. "That's the airship, but I didn't expect them back so soon. They must have made good time from Shopton. I wonder if anything can be the matter that they hurried so?" He gazed aloft toward where a queerly-shaped machine was circling about nearly five hundred feet in the air, for the craft, after swooping down close to the house, had ascended and was now hovering just above the line of breakers that marked the New Jersey seacoast, where Mr. Swift had taken up a temporary residence. "Don't begin worrying, Mr. Swift," advised Mrs. Baggert, the housekeeper. "You've got too much to do, if you get that new boat done, to worry." "That's so. I must not worry. But I wish Tom and Mr. Sharp would land, for I want to talk to them." As if the occupants of the airship had heard the words of the aged inventor, they headed their craft toward earth. The combined aeroplane and dirigible balloon, a most wonderful traveler of the air, swung around, and then, with the deflection rudders slanted downward, came on with a rush. When near the landing place, just at the side of the house, the motor was stopped, and the gas, with a hissing noise, rushed into the red aluminum container. This immediately made the ship more buoyant and it landed almost as gently as a feather.