There were tears in the eyes of both boys as they clung to their old commander.

"But what happened to you?" Lord Hastings continued. "I inquired everywhere, and could find no trace of you. I was certain that you had gone down, and I was never so surprised and overjoyed in my life as when you were lifted aboard the Sylph a few hours ago."

"The Sylph!" e.j.a.c.u.l.a.t.ed Jack.

"Yes," replied His Lordship, smiling a little, "I have christened this vessel the Sylph II, but I always speak of her as the Sylph.

But come, tell me about yourselves."

Briefly Frank related the experiences they had gone through since the Sylph had been sunk.

"Nothing you do can surprise me any more," declared Lord Hastings, when Frank had finished his narrative. "But now, as to the future, do you wish to remain aboard the Marie Theresa, or would you like to come with me?"

"Would we!" e.j.a.c.u.l.a.t.ed Jack fervently.

"I should say we would!" declared Frank decisively.

"Well," said Lord Hastings, "I have no doubt that it can be arranged. I shall speak to Captain Dreyfuss at once."

"Is Lieutenant Hetherington alive?" asked Jack suddenly.

"No," replied Lord Hastings sadly, "we three are the sole survivors of the Sylph."

"But what are you doing in these waters?" demanded Frank.

"Well," replied Lord Hastings, "it's somewhat of a secret, but I don't mind telling you. I am on the trail of the German cruiser Emden."

"The Emden!" e.j.a.c.u.l.a.t.ed both lads.

"Exactly. She has become a terrible menace to British shipping.

While she is probably more than a match for the Sylph, if I come up with her I shall stay on her trail until I can raise a cruiser big enough to tackle her. My job is to find her, and, when I do, I guarantee I shall never lose sight of her."

"Good!" cried Jack. "Now, if you can fix it up with Captain Dreyfuss, we are ready to go with you."

"Would you like to accompany me?" asked the commander of the Sylph.

The lads signified their a.s.sent. An hour later they were all seated in Captain Dreyfuss' cabin aboard the Marie Theresa.

"And where is Pierre?" demanded Captain Dreyfuss of Jack.

"Gone!" replied the lad quietly. "He died the death of a hero."

"And do you mean to tell me," demanded the captain, "that you two lads were in the machines that dived head first into the enemy?"

"It was Jack who conceived the idea and made the first attack,"

replied Frank.

Captain Dreyfuss turned to Lord Hastings.

"And these are the two lads you are asking me to give up to you, eh?" he said severely.

"Well," replied Lord Hastings, "I certainly should like to have them back again. But, of course, if you do not give your consent--"

Captain Dreyfuss interrupted him with a wave of the hand, and turned to the boys.

"And what do you say, sirs?" he demanded. "Have you not been treated well aboard my ship?"

"Yes, sir," replied Jack, "but--"

Frank's heart fell. From the captain's tone, it was apparent that he did not intend to let them go.

"And you, sir?" demanded the captain of Frank.

"We have no cause to complain," replied Frank. "But Lord Hastings--"

"Enough!" interrupted Captain Dreyfuss. "It shall be as you say." He turned to Lord Hastings.

"Take them," he said, "and I am sure you will never find two braver lads."

"Thank you, sir," said both boys.

The commander of the Marie Theresa arose to his feet, signifying that the interview was over, and extended a hand to each lad.

"Good luck," he said simply. "You may go now. I have some matters to discuss with your new commander."

The boys saluted and went on deck, where they awaited Lord Hastings.

It was several hours later before they returned aboard the Sylph.

No sooner were they aboard, however, than Lord Hastings ordered that the vessel be put under way immediately.

"I have wasted time enough here," he told the lads. "I must get on the trail of the Emden at once."

The lads were given quarters corresponding to the ones they had had on the old Sylph. The vessel was built along the same lines as the Sylph I, and had been fitted out just as luxuriously and comfortably. It was, in times of peace, well adapted for a pleasure yacht.

The Sylph II carried a goodly array of fighting material, however, and a crew of 150 men.

It was while dining that night that Lord Hastings gave the boys the surprise of their lives.

"I presume you know," he said quietly, "that as the two surviving officers of the Sylph, you now move into the vacancies left by the death of my first and second officer?"

"What!" exclaimed both lads in the greatest surprise.

"Oh, you heard me," replied Lord Hastings. "But which of you is to be which?"

"But how about your present officers?" demanded Jack.

"They will understand when I explain to them," replied Lord Hastings. "Now, which is to be my first officer?"

"Jack, sir," said Frank.