At the scattered farmhouses along the way, lights could be seen in the windows. Here and there, he passed farmers already at work in the fields. He blew his horn and yelled at these and pointed behind him. They cast one startled glance up the valley and then rushed to their houses.

He did not dare to look behind him, but he could hear a sullen roar that momentarily grew louder. He knew that the monster had broken its bonds and was abroad seeking for prey. He let out the last ounce of power that he possessed as he raced on to the sleeping town. He had ridden fast before, but never as he was riding now.

As he neared the town, he pulled wide open the siren that he only used on extraordinary occasions. It wailed out in a wild, weird shriek that spoke of panic, danger, death. There was no mistaking the meaning of that call.

Now he was in the outskirts, and frightened faces appeared at the windows while half-dressed men ran out of the doors. He waved his hand, and shouted at the top of his lungs:

“The dam has broken. Run for your lives!”

The roar had now swelled into thunder. The flood was coming with fearful velocity. No more need of his siren. That hideous growl of the tumbling waters carried its own warning.

The path on which Bert had been riding wound along the side of the hill to the east of the town. Corresponding slopes lay on the other side. The dwellers on the sides of the hills were comparatively safe. It was unlikely that the water would reach them, or, at any rate, they could climb still higher up and escape, even if their houses were washed away. But there was no hope for the buildings in the valley itself. They were right in the path of the onrushing flood and would be swept away like so many houses of cards. Nothing could resist that pitiless torrent now less than a mile away.

Bert leaped from his wheel and dragged it into a thicket at the side of the path. He cast a swift look up the valley. A great foaming wall of yellow water, forty feet high, bearing on its crest gigantic tree trunks and the debris of houses it had picked up in its path, was bearing down on the town with the swiftness of an avalanche.

The houses were emptying now and the streets were full of frantic people, fleeing for their lives. Bert heard the hoarse shouts of the men, the screams of the women, the wailing of little children roused suddenly from sleep. From every door they poured forth, making desperate efforts to reach the higher ground. The air resounded with the shrieks of those driven almost mad by sudden terror.