Then to make a change, a long rapid would appear, and the only way to negotiate it was to lift the canoes shoulder-high, all the party together under the one canoe, and climb up that rapid with the ice water perhaps up to the waist, and a cruel, drenching spray whipping into their faces. In the meantime, if the mosquito veils were thrown back—and few things are more uncomfortable than a wet mosquito veil flopping about the face, why, then those torturing pests got in a full day's work; the while that a hot Alaskan summer sun blazed above them and blistered face, arms, and neck, exposed alternately to vivid sun and icy spray.

On July 5th, the spruce, which had thinned out rapidly during the couple of days preceding, came to a sudden end, the northern limit of timber having been reached. Nothing seemed to impress on Roger so clearly the fact that he was now in the Arctic Circle as the thought that he was in a climate so rigorous and gale-swept in winter that no tree could grow. A few stunted willow bushes, here and there, still remained, when sheltered on the bank of the river, but trees, as such, worthy of the name, there were none of any sort whatever.

"I never realized," said Roger, "that there was no timber of any kind in the far north. What do the Eskimos burn for fuel?"

"Have you ever seen pictures of stoves or fireplaces in the Eskimo snow hut?" was the answer. "They depend on the heat of their own bodies in a hut without any ventilation, on the flame of blubber lamps, and occasionally, on a little driftwood which may have come down into the Arctic Ocean from some immense stream like the Mackenzie, which, flowing thousands of miles, has passed in its upper reaches through a timbered country."

But by the time that the boy had reached this northern limit of spruce he had lost all idea of time. The days and nights seemed one perpetual nightmare. When asleep he dreamed that he was wading, or tracking, or poling, and when awake he felt as though he were working in his sleep. It seemed to him that he had spent years and years on an icy river, and that fate had tied him to it for ever and ever. By the time that two full weeks of it had passed by, the boy no longer had any thought of reaching the summit, that this toil could stop was a thought incredible, and though his muscles, stiffened and well-trained, continued to do their full man's share of the work, the mental strain was intense.

Rivers and Gersup were considerably troubled over the fact that the boy's strength showed no signs of giving way, and they would almost rather have seen him break down physically than continue his work doggedly, yet like a machine. It became hard, toward the end of the trip, to make him answer a question, and it would have to be repeated several times before the boy could grasp it. Orders regarding the work he seemed to understand at once, but other matters fell on deafened ears.

The older men tried to sting him into life in many ways. They attacked his pride, they endeavored to insult him, they reasoned with him, but there was no response, the heavy and sunken eyes regained no luster, the hard-set jaw never relaxed, and the channels of speech seemed frozen. This went on as the river shallowed until, when the John had become so small that further work by water was impossible, Rivers gave word for a portage.

But the chief was far too wise a leader not to be prudent as well as urgent, and he knew that there were times when a rest would be wise for most of the party, and imperative for Roger. He had not dared to give anything to the boy, because of the need of travel the next day, but now that a short rest was in sight, he mixed up from the little medicine chest a sleeping draught of triple strength, and made the boy take it down. Through the entire night and the whole of the next day Roger slept unmoving, and when evening came, Rivers and Gersup discussed whether they should wake him.

"Let him sleep, if he wants to," put in Magee, who had heard the talk; "sure he can't be gettin' into any harm while he's asleep, an' if it's rest he wants, I think it's better not to wake him."

"But, Magee," said the chief, "sometimes a man gets into one of those sleeps and nothing will rouse him after."