“Are we to accompany you, sir?” asked Jack hesitatingly.

For a fraction of a second the millionaire seemed plunged in thought. Then he arrived at one of his characteristic quick decisions.

“Why not?” he asked, half to himself it seemed. “Later I shall have something to say to all of you. You have wondered at the object of this cruise, no doubt?”

Captain Sparhawk nodded gravely.

“I have guessed you had some great end to serve in it, Mr. Jukes,” he said.

“An end which has now been reached, I fear,” said the millionaire solemnly. “But come, let us proceed with our examination.”

CHAPTER VI.—A MYSTERY OF THE SEAS.

At first glance Jack saw that the main cabin of the Centurion was fitted up with a luxuriousness not common to mere trading schooners. A silver hanging lamp of elaborate design, silk curtains at the stern ports, book-cases filled with handsomely bound volumes and the thick carpets on the floor, clearly indicated that whoever had occupied it had been above the class of the rough and ready South Sea trader.

In one corner stood a desk as handsome in its appointments as the rest of the furniture. But it had been roughly dealt with. The front had been smashed in, drawers pulled out and papers and documents scattered about all over the cabin floor. The door to a sleeping cabin leading off the main apartment was open. Within was the same disorder. Even mattresses had been ripped open in a hunt for something, the nature of which the boys could not guess.