Through the swirling snow which sifted past the glare of his headlights, he could discern a sign which told him he had reached the summit, that he now stood at the literal top of the world. But it was a silent world, a black world, in which the hills about him were shapeless, dim hulks, where the wind whined, where the snow swept against his face and drifted down the open space of his collar; a world of coldness, of malice, of icy venom, where everything was a threatening thing, and never a cheering aspect except the fact that the grades had been accomplished, and that from now on he could progress with the knowledge that his engine at least need labor no longer. But the dangers! Barry knew that they had only begun. The descent would be as steep as the climb he had just made. The progress must be slower, if anything, and with the compression working as a brake. But it was at least progress, and once more he started. The engine clanked less now, the air seemed a bit warmer with the down grade, and Barry, in spite of his fatigue, in spite of the disappointment of a disabled car, felt at least the joy of having conquered the thing which had sought to hold him back, the happiness of having fought against obstacles, of having beaten them, and of knowing that he now was on the down trail. The grade lessened for a few hundred feet, and the machine slowed. Houston pressed on the clutch pedal, allowing the car to coast slowly until the hill became steeper again. Then he sought once more to shift into gear,--and stopped short! Those few moments of coasting had been enough. Overheated, distended, the bearings had cooled too suddenly about the crank shaft and frozen there with a tightness that neither the grinding pull of the starter nor the heavy tug of the down grade could loosen. Once more Barry Houston felt his heart sink in the realization of a newer, a greater foreboding than ever. A frozen crank shaft meant that from now on the gears would be useless. Fourteen miles of down grade faced him. If he were to make them, it must be done with the aid of brakes alone. That was dangerous!