Those clouds over there on the horizon look as if they meant trouble." "Oh, let's keep it on a little while longer pleaded Tubby; cutting through the water like this, without any expenditure of gasoline or power, is the real luxurious way of ocean traveling.

It beats the Mauretania.

Just think if liners could hitch a whole team of things like whatever has got hold of us to their bows! Why, the Atlantic would be crossed in four days." For some time longer the boat shot along over the waves, towed by its invisible force.

The boys, with the exception of Tubby, began to get anxious.

The shores of the mainland were dim in the distance behind them, and Topsail Island itself only showed as a dark blue dot.
Suddenly the motion ceased.
"He's free of the line!" shouted Hiram, inwardly much relieved to think they had got rid of what to him was an alarming situation.
"No, he's not," replied Tubby, bending over the line.