As Bart slipped downward, the black buildings on the summit were blotted out by driving clouds. Little by little he swerved westward, turning his back to the dawn, hearing only the hoarse murmur of the rising gale and the rattle of his board. Guide-books say that the three and one-third miles from summit to base may be covered by slide-board in twenty minutes. Actually, the record is two minutes and forty-seven seconds. This can be appreciated when one remembers that there is a drop of four thousand feet, and that the average grade approximates one in four. Bart had made the trip some hundreds of times in his fourteen years on the road. Every morning that summer he had gone down before daybreak, in order that the little paper printed on the peak might have early distribution among the various hotels. Faster and faster sped the board. The top of the rack was abundantly lubricated with oil from the cogs of the engine, and the grade was growing steeper. On the left a dim shaft flitted by, memorial of a life lost by exposure on the mountain years before. Bart put a little more pressure on his brakes. The stout birch handles, somewhat smaller than baseball bats and about as long as the board itself, were connected forward with the brake-rod running across the front in a hollow wooden bar, and with an iron plate under each flange of the rail. To retard his course, the rider simply pulled up on the handles, which were directly under his arms, thus lifting the plates against the flanges and pressing the board down harder on the top of the rack. The track curved northwest for the next fifteen hundred feet to the Gulf Tank, a water cistern on the left. The grade varied from one in four to one in eight. The wind, keen, strong, and shot with hurrying snowflakes, stung even Bart’s seasoned face. He had worked on the mountain long enough to know what was coming out of that inky bank ahead. Gulf Tank swept past, a square gray shadow, and the track gradually swung west. And now he caught it in good earnest. The moan of the blast had risen to a furious howling. Bullets of sleet pelted his cheeks. Right before him rose a black wall, the edge of the real storm. It looked almost as if it were solid. Catching his breath, he ducked his head, and bolted straight into the heart of the tempest. In a second it enveloped him, rain, snow, sleet and hail. His board whizzed faster over the wet, slippery rail. The grade increased, and he knew he had reached Long Trestle. Beyond lay Jacob’s Ladder, the steepest place on the line, pitched considerably over one in three. He must not go too fast there. It was more than a mile and a half still to the bottom. If the board once got away from him— Bart stiffened himself against the fierce blast, gripped the brake-handles hard, and pulled up on them. A stream of sparks trailed out on each side, as the plates bit at the flanges.