the gasoline and sparking levers, but without avail. At last one cylinder went completely out of service.
The two boats were now on even terms and were racing along side by side toward the wooded point, which marked the finish.
"I'll beat you yet!" exclaimed Andy fiercely.
"Better hurry up!" retorted Tom.
But the young inventor was not to have it all his own way. With a freakishness equal to that with which it had ceased to explode the dead cylinder came to life again, and the Red Streak shot ahead. Once more Andy's boat had the lead of a length and the finish of the race was close at hand. The squint-eyed lad turned and shouted:
"I told you I'd beat you! Want a tow now?" It began to look as though Tom would need it, but he still had something in reserve. One of the improvements he had put in the Arrow was a new auxiliary ignition system. This he now decided to use.
With a quick motion Tom threw over the switch that put it into operation. A hotter, "fatter" spark was at once produced, and adjusting his gasoline cock so that a little more of the fluid would be drawn in, making a "richer" mixture, the owner of the Arrow saw the craft shoot for-
