The driver leaned forward, one hand on the buzzer of his coil, and gave a screw a turn. Already the car was losing speed. The fellow behind was coming on like a red-headed whirlwind. For a moment the missing seemed to cease, and the speed surged back to the hum of the whirring gears.

"Bang! Bang!" went the sharp report, as before, and Garrison groaned. He was looking out, all but hopeless of escape, rapidly reflecting on the charges that would lie against not only himself, but his chauffeur, when he saw the red fellow plunge through the dust on a crazy, gyrating course that made his heart stand still.

They had blown out a tire!

Like a drunken comet, suddenly robbed of all its own crazy laws, the red demon see-sawed the highway. The man at the wheel, shutting off his power, crowding on his brakes, and clinging to his wheel with the skill and coolness of a master, had all he could do to keep the machine anywhere near the proper highway.

Unaware of what had occurred at the rear the driver in charge of Garrison's car had once more adjusted the buzzer, and now with such splendid results that his motor seemed madder than before to run itself to shreds.

Like a vanishing blot on the landscape, the red car behind, when it came to a halt, was deserted by its rival in the race. Two minutes later, with the city ahead fast looming like a barrier before them, Garrison leaned to the tube.

"Slow down!" he called. "Our friend has quit—a blow-out. Get down to lawful speed."

Even then they ran fully half a mile before the excited creature of wheels and fire could be tamed to calmer behavior.

CHAPTER XIX

FRIGHT AND A DISAPPEARANCE