Chapter 15 A RUNAWAY MOTOR-BOAT

"What do you make of that?"

"The motor-boat must have run away from Nat!"

"Either that or Nat has fallen overboard!"

"Maybe Nat has been drowned!"

These and other remarks were made, as the boys on the highway gazed down at the craft that was speeding along in such an erratic fashion over the surface of the river. A closer look confirmed