ing the strap that held him in. By this time other German planes were swooping toward the place, and a squad of cavalry was also galloping toward it.
"I'll beat you, though!" cried Tom fiercely.
He throttled down his engine, intending to give it just enough gas to keep it going, for he would have no one to start it for him if the motor stalled. He calculated that he could taxi the craft across the ground slowly enough for Jack to jump on and then he could get away, saving both of them.
Jack understood the plan at once. He waved his hand to Tom to show that he would be ready, and Tom felt a joy in his heart as he realized that his chum was uninjured.
Down to the ground went Tom, and he guided his machine toward Jack, standing beside his own damaged craft, waiting. Suddenly there was a sharp report, and Tom saw Jack's machine burst into flames.
"He fired into the gasolene tank!" thought Tom. "That's the boy! He isn't going to let the Huns get his machine and the maps and instruments. Good!"
Jack leaped back from the blaze that suddenly enveloped his aeroplane and then ran toward Tom's machine. As he leaped upon the engine hood, which he could do with little more risk
