"That's just what they would do if it wasn't for the fire," was the reply of his friend; "but it does seem to me that they must get tired after awhile."

"I can't detect any signs of it yet. Let me try something."

Catching a brand from the fire, Rob whirled it about his head until it was fanned into a roaring blaze, when he hurled it right among the howling horde.

The scampering that followed was laughable. In a second or two not a wolf was visible, and only the smoking torch lay on the ground where it had fallen just outside the entrance.

It was expected they would soon return, and some of them did sneak back within a short distance, but the smoldering brand was a terror to them so long as it held any life, and they waited until it was utterly extinguished before venturing closer.

Meanwhile, Docak showed such disquiet and concern over something else that Jack Cosgrove, well knowing it must be serious, determined to force him to an explanation, for he had racked his brain in vain to think what grisly dread was looming in front of them.

CHAPTER XXV
THE COMING SHADOW

Docak, the Esquimau, had no wish to affect any mystery as to the cause of his misgiving. He had not mentioned it of his own accord, because he was debating in his mind which of two courses to adopt: to remain longer in the cavern or to set out at once for his home on the coast. It may be said that except for the appearance of the wolves he would have insisted that the start should be made without delay, and pushed with the utmost vigor until their destination was reached.

But this was not to be thought of under the circumstances. To venture outside the cavern was to invite an instant attack by the brutes who were in that state that they possessed a daring foreign to their nature.

Docak explained that an alarming change of weather was at hand. He knew the signs so well that there was no mistake on his part. As he had promised, it was not in the nature of a thaw or rising temperature, but may be explained by that expressive word with which the reader is familiar—blizzard.