An hour ago, under the marvelous canopy of the blue northern sky, David Carrigan, Sergeant in His Most Excellent Majesty's Royal Northwest Mounted Police, had hummed softly to himself, and had thanked God that he was alive. He had blessed McVane, superintendent of N Division at Athabasca Landing, for detailing him to the mission on which he was bent. He was glad that he was traveling alone, and in the deep forest, and that for many weeks his adventure would carry him deeper and deeper into his beloved north.