“But there he can take more than one road,” declared Tom, recalling what Joe had said.

“Dat ees so. Two valley branch off dere, one to zee north, zee ozeer to zee south.”

“Then it will be like looking for a needle in a haystack,” said Jack disgustedly.

Old Joe looked up quickly.

“Maybe we find heem, maybe not,” he said; “all we can do is try. No good get sore, mon garçon. Boosh!”

Jack looked rather abashed, but said nothing, and they went on again in silence. Late in the afternoon, when near White Otter, they came upon two Indians fishing through the ice. They had a decoy, one of the oddest of its kind the boys had ever seen. It was a fish skin blown out like a bladder and anchored at the edge of the ice. They seemed to have had good luck, for a big pile of fish lay beside them.

Old Joe bought a good supply of these for the dogs, whose food was beginning to run low. Then, after the usual palaver, the Indians were asked about other passers along the trail. But they had not been there long, they said. Their camp lay to the south. Since they had been fishing they had seen no one.

The trapper paid for the fish, gave some of it at once to the dogs, and then they went on again. It was a monotonous journey, trying to the body and the spirits. A silence, tragic, gloomy and sinister hung over everything. Although the snow had ceased and the sky was clear, the going was heavy and tiring, and the uncertainty of picking up the thief’s trail again added to their depression.

But the silence did not always hang heavy, brooding and unshattered.

From time to time a cry like the scream of a banshee would split the air, startling the boys, used as they were to it. The cry was that of the hunters of the north, the gaunt, gray rangers of the wilds—the wolves.