speeding away from them the rapidly increasing distance may have disconcerted the Germans. At any rate they failed to bag their game.
The boys were now mounting upwards again, filled with joy over their recent escape. Jack felt sure that Tom had the precious paper; for he well knew the other would never have returned so quickly had not success rewarded his search.
They were soon heading directly for their distant base. Tom could not give his aerial steed the rein, and get all the speed possible out of the cumbersome two-seater. There was no longer any necessity for "loafing on the job," to allow a tardy moon to come in sight, as had been the case before. Home, and at top speed, was the slogan now.
But, alas! it was not long before Tom realized that something was wrong with the plane. He found it increasingly difficult to manage the engine, and the machine began to give erratic jumps that alarmed Jack.
Had it been possible to make himself heard above the clatter of the motor and the propeller, Jack would have been much inclined to shout out, and ask his more experienced comrade what had happened.
Still he could give a shrewd guess. One of the bullets fired by the Teuton soldiers must
