“Was there possibly water on board to drink?”

Jim offered to investigate. He had seen through the hatchway in the dim region of the hold a cask or two. He climbed down a broken ladder to institute a search. The first cask when struck with his boot gave out a sound indicating that it was empty. But there was dimly seen another cask farther aft. Even near the open hatchway it was dark indeed, and the approaching storm made the gloom almost impenetrable.

The second cask was open, the head was out. This fact he determined by feeling about, and reaching down his hand encountered a dry, powdery ingredient. He noted now that there was a dividing partition just aft, on which his hand rested. The partition, he discovered, was hot with an unnatural heat, while the air about him was cool. What was the powdery stuff in the cask? He could not see, but a little held in his hand by sense of smell he recognized. And now a crackling sound beyond the partition wall reached his ear.

The whole picture of their awful position at once flashed upon his mind. The lugger was a veritable trap. They had been beguiled aboard with but one horrible purpose in view. There were people Captain Broome wished to annihilate. The Senor was surely one, Jim and his party the others. The substance in the cask was powder. Doubtless there was more of the same stuff about. The boat was on fire.

With one bound Jim was back to the ladder, and was quickly on deck. The deep intonation of a crash of thunder reverberated through the air, drowning for the moment his voice. Jo saw his blanched face and knew that something unusual had happened.

There was no uncertainty in Jim’s commands.

“Quick! Instantly, Senor! Your daughter and Berwick into the dinghy! Ask no questions. We have not a moment to lose!”

Even as he spoke he was drawing the dinghy alongside, Jo springing to his aid.

“Tom, put into the boat the guns and the Senorita’s handbag! Now, quick, Berwick, man the oars! Row with all your might away from this boat!”

No one had uttered a sound. Jim’s white face showed there must be motive back of his command, and instant action followed. Quickly those ordered to do so had taken their place in the boat.