“If I could use the wireless——” began Jack.

“We could probably get a weather reading from some other ship,” interrupted the captain, starting off, “but as it is, we might as well not have it on board at all. The thing’s got me stumped.”

He carried himself off on his long, thin legs but paused to speak to Mr. Jukes. The ship-owner, although Jack could not hear what was said, appeared to be agitated somewhat by the captain’s words, for he began puffing rapidly at his after-dinner cigar, sending out smoke like the exhaust of a locomotive funnel, a sure sign, as Jack had observed, that he was disturbed.

“I’ll make all snug, sir,” the boy heard the captain say, as he turned away, “and then we will be prepared for whatever happens.”

“Very well, Sparhawk,” answered Mr. Jukes, in a somewhat louder voice than he had used hitherto, “and be sure to see to it that the deck load of coal is secured safely. They tell me the bunkers are running low.”

As has been stated, the Sea Gypsy’s decks were piled high fore and aft with coal, kept in place by wooden bulkheads, which did not add to the appearance of the ship and encumbered progress from bow to stern. Only amidships, where the cabins were situated, was the deck clear. As the captain ascended the bridge he turned and gave an order to a petty officer and presently the crew could be seen at work lashing big tarpaulins down over the coal which was so important to keep the Sea Gypsy moving on her mysterious mission.

The news that the coal supply was running low in the bunkers was a surprise to Jack. He made for Billy Raynor’s cabin where the young chief engineer of the yacht was writing up his “log.”

“Yes, it’s right,” he rejoined to Jack’s question, “the loss of that deck load would be a serious matter. We’re a good many hundred miles from land and will have to tap the supply before long.”

“Billy, what on earth do you suppose is the object of this voyage?” demanded Jack abruptly.

“Blessed if I know, but I’m well satisfied with my promotion and job,” declared Raynor. “Cruising these wonderful seas in a yacht that’s a beauty, even if her decks are all littered up like a cattle boat’s, just about suits me.”