too, it was colder at the elevation at which they flew than down on the ground.
Another day found them in a still wilder and more desolate part of Alaska. There were scarcely any signs of habitation now, and the snow and ice semed so thick that even a long summer of sunshine could hardly have melted it. The hours of daylight, too, were growing less and less the farther north they went.
"Do you think you can pilot us right to the Snow Mountains, Abe asked Tom on the third day after the accident to Andy's airship. "Let's get out the map, and have another look at it. We must be getting near the place now. We'll look at the map."
The young inventor went to his stateroom where he kept the important document in a small desk, and the others heard him rumaging around. He muttered impatiently, and Ned heard his chum say: "I thought sure I put it in here." Then ensued a further search, and presently Tom came out, his face wearing rather a puzzled and worried look, and he asked: "Say, Abe, I didn't give that map back to you; did I?"
"Nope," answered the miner, "I ain't seen it since just before th' hail storm. We was lookin' at it then."
"That's when I remember it," went on Tom,
