The men fell to the oars with a will, and were soon out of sight in the darkness. Nothing more was ever heard of them by the boys, but as some time ago a sailor was arrested on the Bowery trying to pawn a candlestick of solid gold marked Buena Ventura, it is reasonable to suppose the men eventually got ashore. The prisoner gave the name of Jones, but as he had red hair it is not unreasonable to assume that he was none other than Wells. As nobody claimed the candlestick and the police had received no word of such an article being stolen, it was given back to the man and he was released.

CHAPTER XXVI.

THE BOYS WIN OUT.

"Now," said Frank briskly the next morning, "as that scoundrel Constantio tried to steal a march on us we shall have to try to discover his powder and make the gas by ourselves."

"What," exclaimed Harry, "do you mean to say that you think it would be possible to do it?"

"If he can, I don't see why we can't," rejoined the other. "The first thing to do is to find his powder. Then to mix it with equal parts of water and sand in the cylinders and screw the caps on."

"Sounds easy," commented Harry.

"I guess the hardest part will be to find the powder," put in Ben. "How are we to tell whether it's hydrogen gas powder or Seidlitz powder, I'd like to know."

After a hasty breakfast a thorough rummaging of the cabin occupied by
Constantio was begun.

"Say, Frank," suddenly cried Ben, who was bending over a locker, "is this the stuff?"