The Boy Allies at Liege Part 19

Chester opened the door of their room and peered out.

"Coast clear," he announced.

Softly the two boys stole from the room and crept along the hall. They tip-toed down the stairs, opened the door, and went out with scarcely a sound. Outside they stopped. In front of the workshop they could see the two guards in conversation.

"We must get to the rear of the shop without being seen," whispered Hal. "When one guard makes his rounds, we must grab him and prevent him from making an outcry. We can then dispose of the other. You wait here a minute, while I go back and get a piece of clothes-line, so we can tie them up."

He returned almost immediately with two pieces of rope.

"Careful, now," whispered Hal, as, keeping in the shadow of the house, they made a short detour.

Out of sight of the guards, they made a silent dash for the rear of the workshop, where they stood, silently awaiting the approach of the guard.

"I hate to do this," whispered Hal, as he heard the footsteps of the guard; "but it has to be done."

As the guard rounded the corner of the shop, Hal struck out. Swift and true was the blow; and struck upon the point of the chin, the man crumpled up without a sound.

The boys bound and gagged him quickly, using their handkerchiefs to stuff into his mouth. Then silently they ran to the opposite side of the shop and waited the approach of the second guard.

A moment later his footsteps were heard approaching. As he turned the corner, Hal again struck out swift and true, and the second man went to the ground. The boys bound and gagged him, and then hastened to the front of the shop.

As Hal had predicted, the doors were removed with little difficulty, and silently the lads rolled the huge machine into the open. Hal's experience with automobiles had taught him something of engines, so he had little trouble starting this one. Finding everything in working order, Hal climbed into the driver's seat, and Chester, not without a tremor, took his place beside him.

Hal's afternoon experience and his natural apt.i.tude for mechanics now stood him in good stead. Reaching out he threw over a lever and the machine moved forward. There was a whirring sound as the plane skimmed over the ground. As the machine began to rise, Hal pressed another lever, and they shot into the air rapidly.

So swiftly did they go up that their breath was almost taken away.

"Great Scott!" gasped Chester. "This is more than I bargained for!"

With the lights of the village like pin points below him, Hal, who had not for a moment lost his presence of mind, checked the rise of the machine, and headed toward the southwest, gauging his direction by a compa.s.s before him, the moonlight luckily permitting him to see.

As the machine settled down to its flight, Chester regained his composure.

"This is more like it," he said. "For a moment I was afraid it was all up with us."

"I was scared for a minute myself," replied Hal. "But you must remember this is not my first trip aloft."

"I guess it's all right after you get used to it," was the answer, "but the way I feel right now, if I ever get my foot on terra firma again I am going to stay there."

Hal laughed.

"Oh, you will be all right directly," he said. "For my part, I like it."

"How fast do you suppose we are going?"

"About fifty miles an hour."

"Great Scott! That's going some!"

The machine was skimming at great speed through the air, flying low, as Hal did not wish to lose sight of the ground entirely.

"This is high enough for me," he explained. "I might want to go down suddenly, and I want to see where I am going. Of course, if it is necessary, we will go higher."

"I guess we might as well fall ten miles as to fall from here," remarked Chester. "If anything went wrong it would be good night for us."

For a time they flew along in silence.

Suddenly there was the sound of a shot from below, and a bullet whizzed by the flying aeroplane.

Hal sent the machine higher into the air with a jump, and Chester let out an exclamation as he was almost thrown from his seat.

"That was too close for comfort!" cried Hal.

"Well, the next time you decide to shoot up like that, let me know first!" exclaimed Chester. "You almost lost me that time!"

"Hang on tight!" shouted Hal. "You never can tell what will happen with me running this thing, so don't take any chances."

"I'll hang on tight in the future, never fear," was the reply. "What do you suppose that shot was?"

"Some sentry, I suppose. I guess he knew no machine was supposed to be flying around here. That's probably why he took a shot at us. We were flying too low, anyhow. We will stay up here, where we can't be so easily seen or heard."

For some time the boys sailed along without a word, and then, just as Chester opened his mouth to ask Hal where he supposed they were, there was the sound of rus.h.i.+ng wings, and, turning in his seat, Chester beheld a huge shape rus.h.i.+ng after them.

"Speed up, Hal!" cried Chester. "We are pursued!"

Without stopping to ask questions, Hal threw the speed lever over, and the machine leaped forward like some live thing.

At the same moment there came the crack of a rifle, and, as Hal dropped one arm from the steering wheel the aeroplane rocked crazily and dived toward the ground.

The bullet had grazed Hal's left shoulder.

With a desperate effort, the lad righted the machine with his one good arm, and it shot upward again.

"What's the matter?" gasped Chester. "Are you hurt?"

"Hit in the shoulder," replied Hal briefly. "I suppose whoever fired aimed at the machine. I just happened to be in the way, that's all."

"But you can't drive with one arm! Hadn't we better--"

"Can't!" exclaimed Hal. "I've got to!"

At that moment both boys were almost blinded by the glare of a dazzling light directly ahead!

CHAPTER XI.

OVER THE FRONTIER.