Jack hoped with all his heart they could get away without an upset. The ground was far from being all that might be wished; but then he had known even worse in his experience, and had never yet come a cropper. Besides, Tom would be at the helm, and that stood for a great deal. Jack hastened to get aboard.

None too soon did the pilot get his machine to going. The Huns were already howling close by, and must have turned in at the cemetery entrance as though suspecting the truth.

With a whirr and a clatter the plane was off. Guns had commenced to bark and red splashes of fire to stab the opaque mist that had now fallen on the lower ground with the deepening night. Jack felt like laughing at all these vain efforts to stop their departure.

Bumping along, Tom increased the speed, with Jack waiting in more or less suspense to ascertain what the outcome would be. Ahead of them rose the barrier of trees. If they struck that all was lost. But Tom was on the alert, and just in good time he changed his lifting lever that caused the nose of the plane to incline upward.

With a rush and a roar they cleared the treetops, though there did not seem to be a yard to spare. That danger past, Jack felt that they were better able to cope with the next peril. Down below the disappointed general continued to shout and the soldiers to shoot, but one was just as harmless as the other.

"He's coming for us, Tom! That Boche pilot!" shouted Jack. "Swing around so as to give me a chance to pepper him good and hard!"

Tom did so, and Jack speedily found an opportunity to handle his machine-gun, which he did with all his old-time vigor.

There was a feeble response from the Hun, who, however, seemed hardly to understand what it was all about, or just why he should be chasing after an unknown plane that had come from the region of Von Berthold's headquarters.

Two minutes passed, and they were no longer followed by the Hun machine. Jack never knew whether he had done any damage or not, though convinced that he had seldom made better use of his gun. It was enough for the air service boys to realize that the field was clear ahead, and with reasonable luck they ought to be able to make their goal without further mishap.

Some little time later there was a bit of a sensation created among the American aviators when a big bombing plane that had been listed as "missing and supposed to be lost" came settling down like a huge bat.