In tracking canoes to save time of portage, great skill is needed in these swirling currents.

Harry, without waiting for any conversation with the other members of the party, busied himself in getting together dinner, knowing that the fellows, who had toted heavy packs over the carry, would be sufficiently hungry and tired. The meal being over, the whole party, including Harry and Roger, started back for the camp, and the boy was surprised to find how short and easy it seemed after the difficulty he had experienced the day before in forcing his way through the bush, where a trail had not been cut. They reached the camp at the upper end of the canyon, where the cook had been left, late in the afternoon and made all ready for the start the following morning.

The next day the entire remainder of the supplies and equipment of the camp were made up into packs and the party started over the portage to where the boats had been left lower down on the river. Roger, being accommodated with a pack weighing about ninety pounds, felt as though he were back in the Minnesota swamps, with the tump strap over his forehead. His familiarity with packing, and his ability to take the trip without feeling any physical inconvenience, was a source of gratification, as Roger's pride was keen not to be thought in any sense a less able member of the party than the oldest and most seasoned hand. The journey down to the lower end of the canyon did not seem so long, and, as on the previous day, the party reached the lower camp about noon. In the afternoon Gersup and Bulson, taking Roger with them, took advantage of the half day to make a survey before descending into the beaches of the lower Cantwell River.

As it was expected that the going would be easy for a while lower in the stream, Rivers readily acceded to Roger's petition that he should take his rifle along. There had been such a lot of caribou about, that the boy felt he ought at least to get one.

"We haven't space for the head as a trophy, of course, you know," he said, "and I don't approve of shooting for sport, but caribou is good eating, and it is always wise to conserve supplies."

"I've never had a chance at any big game, before, Mr. Rivers," joyfully said the boy.

"All right, then," said the chief, smiling, "I guess you won't reduce the visible supply of caribou in Alaska enough to hurt."

Immediately after dinner the three started, and Roger's luck was with him, for as they rounded the corner of a mountain slope, Gersup halted, and pointed with his finger to four specks about three miles away. Raising his field glasses, he said:

"There you are, Doughty; there are your caribou. You've worked pretty hard and ought to have some fun out of it. We can get along all right, and you go after them. You can't very well get lost, but don't try to track them after dark."

Roger nodded, and skirting the slope until he was hidden from the animals' view, he started on a run for a couple of miles, until he thought it would be necessary to exert more prudence. A long and weary progress through the rough country, with the endeavor not so much as to crack a twig or rustle a leaf, brought the lad at last to the little valley where he had seen the caribou, and there the shelter stopped, except for sundry large boulders, which did not afford a complete cover. Roger had worked round, of course, so that he was coming up wind. He had come within about half a mile of them, when he found cover absolutely gone, so lying prone on his face, and just wriggling forward by movements of his knees a foot or so at a time, he spent at least an hour advancing a quarter of a mile on the objects of his quest.