Tom Swift and his Submarine Boat

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.......