But recollecting that he had already promised to masticate more than he wished for, Drake checked himself in time.

"Mr. Cardyke," he exclaimed, as the midshipman passed on his way to the pavilion. "Not a word to the others, mind. A message has just come from the commander-in-chief ordering us to put to sea with the utmost promptitude on particular service."

"Anything startling, sir?"

"Only that news has been received that the Impregnable has been seized on the high seas. How, when, or where we have to find out. Our instructions are to investigate, and take action if necessary."

"I hope, sir, there will be plenty of 'if necessary' about it."

"So do I," agreed Drake, grimly. "We've the chance of a lifetime—and I mean to make the most of it."

CHAPTER III

THE DESTROYER'S QUEST

Within a quarter of an hour of the termination of the match Fielding and Cardyke were on board the destroyer, Drake having gone post-haste to the commander-in-chief to receive definite instructions as to the course of action.