As he uttered the words, he leaned forward, pointing over Billy’s shoulder. Alec, after one quick glance, threw out the clutch and jammed on the emergency brake with such suddenness that Chester, caught unprepared, tumbled back upon the seat. Before he had recovered from this jolt, he saw Alec and Billy jump out of the auto and run swiftly through the tall grass toward a railway track close to the road. Leaping from the car he followed them at full speed.

The track at this point made a long curve preparatory to crossing a narrow trestle over an inlet of the ocean, scarcely a hundred yards distant from the spot where they had left the car. Not quite halfway across the trestle, a girl, carrying a basket, was advancing, hurrying over the ties, and behind her trotted a big shaggy dog. The three lads had sprinted forward over a sandy embankment toward the track because they heard, in the distance behind the girl, the sudden shrill whistle of a locomotive and the rumble of an approaching train.

The girl also heard it, glanced back over her shoulder, and with a shriek of terror, flung the basket aside and fled onward as fast as she could run.

As the young Scouts dashed to the rescue, the ominous rumbling grew louder and louder; the rails began to hum; then, with another warning blast of the whistle, the freight train appeared around the bend and thundered toward the long bridge.

Billy was the first to reach the end of the trestle toward which the girl was coming rapidly. Running forward, leaping from one tie to another, he realized how precarious was the footing, how easily one misstep might hurl anyone into the depths below. Between the ties underfoot he caught glimpses of the flashing green water swirling around the upright piles as the tide flowed in, and, looking up, he could see the strained, desperate expression on the girl’s white face.

“Don’t lose your nerve!” he called to her. “You’ll get across all right.” He was not so confident as he appeared to be, but he knew instinctively that she needed encouragement. “Come on, come on; but take care!” he shouted. “We’re going to flag that train.”

Alec was close at his heels. Stripping off his coat and waving it frantically, he overtook Billy just as young Worth, bounding forward, almost collided with the girl and caught her outstretched hands in his own. Some little distance behind them, Chester stood at the end of the trestle, gazing with horror-stricken eyes at his friends and wondering what was the best thing he could do at this crisis.

“Oh!” he groaned despairingly. “They’ll never stop it! They’ll all be killed!”

Without waiting to see what progress Billy and the girl were making as they turned and ran, Alec bounded forward for several yards, and stood in the middle of the track until the train was almost upon him. Then, with quick decision, he leaped to one side and flung himself down on the ground.

The train passed him amid a whirl of dust and sand and small stones, and in another minute it was out upon the bridge. Car after car thundered past, with a deafening rumble of wheels. There was a sudden shriek and a jar of the brakes being applied, but before the engine had come to a standstill it had almost crossed the trestle.