“What will Uncle Dacre say?”

It was Jack who voiced Tom’s gloomy thoughts. With his younger brother’s words a sudden resolution came into Tom’s mind. Undoubtedly he, as the one in charge of the camp, was responsible for the loss of the black fox. It would never be seen alive again, of that he was sure.

But its skin? That was valuable. If he could only recover that, it would at least be partial restoration for what he, perhaps unjustly, felt was a neglect of his duty.

He came out of his reverie. Swiftly he set about examining the remainder of the cages. They had not been tampered with. No doubt the thief knew that he was not likely to have time to rob more than one cage undisturbed after the noise of his gun had aroused those who were undoubtedly on watch. With this in mind he had taken the most valuable of the lot.

Tom’s eyes fell on the tracks of the dog-sled on the hardly frozen snow. They lay there in the yellow lantern light as clean cut and conspicuous almost as parallel lines of a railroad.

The boy knew that the sled must be packed heavily, probably with all the paraphernalia of a traveling trapper. The question of how the man had come to find out about the valuable collection of foxes on the bank of the Porcupine River, Tom, of course, could not guess. But one thing he did know—that the thief had left behind him a valuable trail which it would be as easy to follow as the red line on a map indicating a transcontinental railroad.

And that track Tom meant to follow before it grew cold. They had no dog sleds, but they knew that the man with his heavy load could not make very fast time. Before daylight, long before the first glimmerings of the brief winter’s day of the north, the boys’ arrangements had been completed.

Snow-shoes were looked over and thongs inspected, tea and provisions packed into provision bags secured with “tump-lines,” and everything put into readiness for the long trail that Tom and Jack (for his younger brother was to be his companion) were to strike. As the boys had been in the habit of going thus equipped over the long trap-line, and had become adepts on snow-shoes, these preparations did not take long.

Sandy was almost in tears when it was decided that he was to be left behind. But it was necessary for someone to be there to feed and guard the foxes, and to be on hand to meet Mr. Dacre and his partner on their return from the settlements and explain matters to them. Tom was not certain just when their elders would get back, but he entertained a vague hope that it might be possible to overtake the thief and secure the black fox pelt before that time.

As the two lads glided off in the dim gray light, moving swiftly along the thief’s trail on their snow-shoes, Sandy stood and watched them till they were almost out of ear-shot.