Again Walter shook his head.
“This I have noticed,” Louis went on. “I have never seen the mirage in winter except at dawn or sunset. In summer I have seen it in the middle of the day when it was very hot and still. But why it comes, winter or summer, I do not know.”
Neil’s arrival stirred the others to action. The dogs were harnessed and good-byes said to Louis’ mother and sisters and rather sulky younger brother. Raoul wanted to go too, but one of the boys was needed at home.
Fresh and full of spirits, the dogs set off at such a pace that the boys had all they could do to keep up. When they left the trail and took to the untracked snow, speed slackened considerably. Louis now went ahead of the team, though track breaking was hardly necessary. Underneath an inch or more of dry, loose stuff, almost like sand, the snow was well packed and held up the dogs and sled. The line of hills had vanished, but the mirage did not entirely disappear and the landscape resume its natural appearance until the sun had been up nearly two hours.
The day was cold, much colder than the lads realized at first, for, when the start was made and for some time thereafter, there was not a breath of wind. All three wore fur caps and mittens, woolen capotes, and thick knit stockings under their moccasins. Walter had possessed none of these things when he came to Pembina, but Mrs. Brabant had made him a capote from a Hudson Bay blanket and a cap and mittens from a rather well worn bearskin. She had knit warm, new stockings for both boys from yarn bought at the trading post. A prickling feeling in his nose was Walter’s first warning that his flesh was freezing. Stooping for a handful of snow, he rubbed the prickly spot to restore circulation, and pulled the hood of his capote farther around his face.
Their course at first lay to the north of the Pembina River, over flat prairie without an elevation high enough to be called a hill. On that January morning, the whole plain was a stretch of dazzling white. In the distance it appeared level, but it was actually made up of rolling snow waves. It was, Walter thought, like a great lake or sea, the waves of which had suddenly frozen while in motion and turned to snow instead of ice.
XIX
BLIZZARD
As the sun rose higher the wind began to blow. The loose surface snow was set in motion, crawling and creeping up the frozen waves. The wind gained in strength, and everywhere the plain seemed to be moving. The glitter was less trying to the eyes now, for the sun had grown hazy. Louis glanced up at the sky, shouted to his dogs, sent his long whip flying through the air and flicked the leader with the lash.
“A storm comes,” he called to his companions. “We must make haste and reach the river where it bends to the north.”
With the increase of speed, Walter, less experienced in this sort of travel than his comrades, found keeping up difficult. Neither with nor without snowshoes was he the equal of the swift, tireless Louis. Neil too was his superior on snowshoes, though on bare ground Walter could outrun the Scotch boy. In spite of all his efforts he fell behind. Seeing his difficulty, Louis suggested that he ride for a while, standing on the rear of the sled. Glad though he was of a few minutes’ rest, Walter did not ride long. The northwest wind soon chilled him through, and he was forced to run to warm himself.