“He knows the route better than I do, so I won’t try to disturb him,” reflected the boy as he followed up his advantage, with high hopes of discovering the secret which was so important to himself and friend.  “I won’t crowd him too hard, either, for I may scare him off the track and fail.”

The wolf was evidently a prey to curiosity—­the same propensity which has caused the death of many bipeds and quadrupeds.  The action of the torch puzzled him, no doubt.  He had seen fire before, and probably had been burnt—­so he knew enough to give it a wide berth; but it is doubtful whether he ever saw a flaring torch held over the head of a boy and solemnly bearing down upon him.

Fred’s absorbing interest in the whole affair made him wholly unmindful of the distance he was traveling.  He had already advanced several hundred yards, and had no idea that he was so far away from his slumbering friend.  The fact was that the singular cave was only one among a thousand similar ones found among the wilds of the West and Southwest.  Its breadth was not great, but the distance which it ran back into the mountains was amazing.

The wolf was leading the lad a long distance from the camp, and, what was more important (and which fact, unfortunately, Fred had failed to notice), the route was anything but a direct one.  It could not have been more sinuous or winding.  The course of the cavern, in reality, was as winding as that of the ravine in which he had effected his escape from the Apaches, and from which it seemed he had irrevocably strayed.  Had he attempted to make his return, he would have found it impossible to rejoin Mickey O’Rooney, unless the two should call and signal to each other.

However, the attention of the lad was taken up so entirely with the task he had laid hold of, and which seemed in such a fair way of accomplishment, that he took no note of his danger.  The wolf was leading him forward as the ignis fatuus lures the wearied traveler through swamps and thickets to renewed disappointment.

“He has some way of reaching the outer world which the Indians haven’t been able to find.  Of course not; for, if they knew, they would have been in here long ago.  They wouldn’t stay fooling around that opening, where they’re likely to get a shot from Mickey when they ain’t expecting it.  Now, if the wolf will only behave himself, all will come out all right.”

Fearful of being caught with an extinguished torch, the lad kept up the practice of swinging it rapidly round his head every few minutes.  When he ceased each performance, the flame was so bright that he was able to penetrate the darkness much further upon every hand.

On one or two of these occasions he caught a glimpse of the creature as it bounded away into the darkness.  In shape and action it was so much like the mountain wolves which had besieged him some nights before that all doubts were removed.  He knew it was one of those terrible animals beyond question.