Rob bore his misfortune meekly, although he was almost ready to cry with grief and disappointment.  But when one of the pirates, to inflict further punishment on the boy, came towards him with a heavy strap, he resolved not to await the blow.
Turning the indicator to the word "up" he found, to his joy and relief, that it would yet obey the influence of the power of repulsion.  Seeing him rise into the air the fellow made a grab for his foot and held it firmly, while his companions ran to help him. Weight seemed to make no difference in the machine; it lifted the pirate as well as Rob; it lifted another who clung to the first man's leg, and another who clung to him.  The other two also caught hold, hoping their united strength would pull him down, and the next minute Rob was soaring through the air with the entire string of five buccaneers dangling from his left leg.
At first the villains were too astounded to speak, but as they realized that they were being carried through the air and away from their ship they broke into loud shouts of dismay, and finally the one who grasped Rob's leg lost his hold and the five plunged downward and splashed into the sea.
Finding the machine disposed to work accurately, Rob left the buccaneers to swim to the ship in the best way they could, while he dropped down to the deck again and recovered from the cabin his box of tablets and the electric tube.  The fellows were just scrambling on board when he again escaped, shooting into the air with considerable speed.
Indeed, the instrument now worked better than at any time since he had reached the cannibal island, and the boy was greatly delighted.