Blake's Burden by Harold Bindloss

When Blake was awakened by Harding, the cold was almost unendurable, and it cost him a determined effort to rise from the hollow he had scraped out of the snow and lined with spruce twigs close beside the fire. He had not been warm there, and it was significant that the snow was dry, but sleep had brought him relief from discomfort and he had found getting up the greatest hardship of the trying journey. In answer to his drowsy questions, Harding said he had once or twice heard a wolf howl in the distance, but that was all, and then lay down, leaving Blake on guard. He sat with his back to a snowbank which afforded some shelter and imagined from his sensations that the temperature must be about fifty degrees below zero. The frost bit through him, stiffening his muscles until he felt that if vigorous movement were demanded of him he would be incapable of it, and dulling his brain.

He could not reason clearly, though he had things to consider, and he looked about with heavy eyes, trying to forget his physical discomfort, while his mind wandered through a maze of confused thought.