The structure had not been built for such a weight, and, just as the machine reached the other side, the bridge went down with a crash.
"Look out!" yelled Dick, and the warning came none too soon, for both he and Tom were almost on the bridge.

They turned their horses just in time, came to a sudden halt in some bushes, and stared blankly at each other.
"Gone!" cried Tom, hollowly.

"Oh, what luck!" "Quick, your pistol, Tom!" cried Dick, suddenly.
"But the girls----" began the other.
"Don't shoot at the car, shoot at the tires," explained Dick.

And then he whipped out his own weapon, got into range, and began to blaze away.
Each of the boys fired three shots.

One hit the back lamp of the automobile, smashing the red glass, and another hit the differential case and glanced off.