"Sell it to Mr. Stanwood for ten dollars." "You are lucky to get a customer, Jack." "I know it. I'd turn the boat over to you only--well--we need the money now, you know," and Jack's eyes dropped. "Thank you, Jack, but I wouldn't have much time to use it. I must put in the most of my time at work." "I suppose that is true. At the same time I'd rather you had the boat than anybody I know of." The boys were coming around a bend of the river when they heard a peculiar noise in the distance. "What do you make that out to be?" asked Jack, as the noise continued. "I think I know," answered our hero. "It is the new tugboat from the bay. I saw it once, several weeks ago. It makes a very odd sound, for the engine is not like the ordinary ones." The noise kept coming closer and presently the tugboat came into view. It was stuck in the mud and those on board were doing what they could to get the craft afloat again. "They seem to be having a hard time of it," remarked Jack, as he stopped rowing to watch the proceedings. "The mud is very sticky here, if you'll remember," answered Randy. "Don't you remember how we were stuck here last year?" "Yes, and how I lost an oar overboard and nearly went overboard myself," continued Jack, with a short laugh. "Heigh-ho! Randy, I'll be sorry in a way to lose it all." "We must write to each other." "Of course." The tug was puffing and snorting viciously to get out of the mud. On board were four people who were evidently passengers, including a lady with a little girl. Suddenly there came something which sounded like an explosion. This was followed by a cloud of steam that seemed to completely envelop the tugboat. "Something is wrong!" shouted Randy. "Oh, mamma, I don't like this!" screamed the little girl, as she ran to the stern of the tug. "We'll be burned up!" She had scarcely spoken when there came another explosion and the cloud of steam increased. The four passengers crowded to the stern in a body, and a moment later the two men leaped overboard and called on the lady and her child to do likewise. "I cannot swim!" shrieked the lady. "You must jump!" answered somebody. "The tug may blow up!" The little girl heard this and with a scream she ran from her mother straight for the bow of the tug. The next moment she lost her balance and went overboard. "She's over!" cried Randy, and his heart leaped into his throat. "Save my child! Save Helen!" shrieked the lady and rushed after her offspring. Soon she was in the water also. The situation was certainly a thrilling one. The two men in the water were fifty feet away and those left on the tug were in no position to render assistance. The child had disappeared completely, while the mother was thrashing around wildly, in water just up to her neck. "Quick, Jack, turn the boat around!" ejaculated Randy. "We must get them on board."