For some moments Burgoyne was completely dumbfounded. He could form no satisfactory reason for the Old Man's emphatic decision, unless Captain Blair was labouring under a delusion owing to a hitherto unsuspected mental trouble.

It seemed incredible that Alwyn's carefully-thought-out plans and careful preparations (although the latter were only in the initial stages) should have been drastically turned down, especially as they had met with the approval and gained the co-operation of every other surviving officer of the Donibristle.

Burgoyne uttered no word of protest. It was not for him to reason why—at least audibly. His sense of duty—impressed upon him from his early days of Osborne—had taught him to receive and carry out orders unquestioningly. So he held his peace and waited.

"I suppose you'd like my reasons for the decision, Mr. Burgoyne?" asked the Old Man.

"I would, sir, if you have no objection."

"Not in the least," rejoined the skipper. "The chief one is that there is no immediate necessity for you to take this step. As things go we have nothing much to complain about." ("Exactly what Miss Vivian said," thought the Third Officer.) "It is reasonable to assume that Porfirio cannot carry on for long, and release will come possibly long before you could reach the Marshall Islands. It's a tremendous voyage for an open boat, and the results gained, if any, would not justify the risk. Then, again, there's the question of reprisals. The pirates would miss the boat and draw perfectly logical conclusions. They would revenge themselves on those who would be still in their power, even to the extent of committing cold-blooded murder. No doubt you think I'm a bit in a blue funk, but I have the advantage of years, and that has taught me to look ahead and not wait till I see a rock under my bows. However, I don't want to moralize. I hope you see my point?"

"Yes, sir," replied Alwyn.

"However," continued the Old Man briskly, "there's no reason why you shouldn't carry on with your preparations. If occasion should arise for someone to leave the island in a hurry, it is as well to be ready for the emergency. But, until occasion does arise, it is folly to precipitate matters, and deliberately seek the path of a typhoon when we are bowling along before a steady breeze. By the by, what has that wash-out Miles been doing?"

"He was placed in Mr. Branscombe's party working on board the Donibristle, sir."

"H'm. I'll tell Branscombe to keep a pretty sharp eye on him. Captain Davis informs me that Miles seems rather fond of that ruffian Strogoff."

"Is that so?" remarked Alwyn. "I was under the impression that Strogoff was sent on board the Malfilio."

"He was aboard the old Donibristle yesterday, at any rate," declared the skipper. "Miles knows about Miss Vivian, and, although I cannot say definitely, I think he's the sort of man who wouldn't hesitate to give the show away if he could make his own case good."

The seriousness of Captain Blair's words took Burgoyne aback. The Third Officer remembered that little incident of the chocolate. It was but a straw that showed the direction of the wind. Miles had proved himself to be a man of no moral fibre. To what depths would he descend to obtain consideration from the villainous Strogoff?

"That is why you wanted the boat held in readiness, sir," he asked. "To remove Miss Vivian from the island in the event of discovery?"

"You've hit it, Mr. Burgoyne. The sooner the preparations are completed the better; but, of course, there may be no necessity for them. I quite agree with you that Minalto is the right man for the job, with you in charge of the boat."

"And Colonel Vivian."

"He won't be going," declared the skipper. "I pointed out to him the almost unsurmountable disadvantages of having a cripple in the boat. His health, too, isn't at all good. He quite saw the force of my contention."

"We are speaking, sir, as if the lifeboat were already in our possession."

"Aye," rejoined the Old Man. "It's a rough proposition, Mr. Burgoyne, but from what you've told me the task is not beyond your ingenuity."

That night Burgoyne carefully revised the altered situation. The perplexing factor in the case was the uncertainty of the time when the boat might be required. He could not completely grasp the meaning of Captain Blair's decision to refrain from action until Miss Vivian was in immediate danger. It was obvious that the boat must be seized, taken to the western side of the harbour, and provisioned all within a few hours, and be out of sight before dawn. There wasn't the faintest hope of being able to conceal the boat for several days prior to the dash for freedom. The mere fact that the lifeboat had been removed from the beach would be sufficient to put the pirates on the qui vive.

And, again, although a fair amount of provisions had been set aside to victual the boat, nothing had yet been done to hide them in the cave. Neither had any of the people in the secret been able to obtain a receptacle of any description to carry water, and fresh water was indispensable for the voyage.

Nor had the cave been explored. Branscombe had collected enough rope to make a three-inch hawser of two hundred and fifty feet in length, more than sufficient to reach from the top of the cliff to the beach, but the actual descent had not yet been attempted.

Clearly a stupendous task confronted Burgoyne. Much had been accomplished, but more remained to be done in secrecy and with dispatch.

On the following morning Burgoyne rejoined his working-party. Fernando, the half-caste who had succeeded Black Strogoff as overseer-in-chief to the prisoners, nodded and made some remark. The words being Spanish, Alwyn failed to understand them, but evidently they were of a complimentary nature.

Before the working-party arrived upon the scene of operations, one of the men who had done a good deal of voyaging on the South American coast explained that Se?or Fernando was delighted that Perez —Burgoyne's late opponent—had been vanquished. There was no love lost between Fernando and the late leading gun-layer of the Malfilio.

The work of unloading the Donibristle's cargo had been completed, but most of her stores were taken on board the Kittiwake. It was obviously the intention of the pirates to keep the latter vessel in a seaworthy condition, since she had not been stripped as in the case of the other prizes. In addition, a wireless operator, a German with a knowledge of four or five languages, was constantly on duty on board the Kittiwake. He merely "caught" and reported radios from vessels within range of the apparatus, making no attempt to transmit, l............