“Thank you, colonel,” said the lad, gratefully, “I shall do so.”

He at once called together Nat, Ben Cooper, Scarlett and his brother George.

“See to your arms,” he said, quietly. And as they examined the priming of rifle and pistol, he continued: “We are going to cross the lake in the most direct route. Let no one speak unless compelled to; and even then, not above a whisper.”

All five left the circle of light and advanced across the ice. They had pulled heavy moccasins over their boots upon approaching the lake in the first place, in order to secure their footing upon the smooth surface; these now deadened their footfalls as they carefully made their way along.

Almost two-thirds of the distance had been traversed when Ezra suddenly paused. His outstretched hands brought the others to a halt also.

“Hark!” said Ezra, softly.

All stood motionless for a time. At length Nat Brewster whispered:

“I fancied that I heard something, but I could not make out what it was.”

Here Nat felt Ezra’s hand close over his arm in a powerful grip. At once he became silent and all stood bending forward, listening once more.

From some distance across the ice came a faint, rasping noise. Now and then a quicker and heavier sound reached them. It was as though blows were being struck.