case he encountered another of the enemy.

At length he came to the end of the passageway, and pushed his
prisoner out. Even as he did so a bullet whistled by his head and he
heard the crack of a German rifle. Hal lost no time in getting back
into his hiding place.

But now he discovered that even this was not far enough, for a bullet
came whizzing into the cave after him. It hit the side of the wall and
went skimming over his head.

With all possible haste the lad retreated around the little bend, and
throwing himself upon his face held his revolver ready to fire at the
first sign of an advancing foe.

He lay perfectly still, not making the slightest noise, and after some
moments heard the sound of voices.

"I tell you I must have hit him. I never miss at that distance," said
one. "And, besides, if he were in there we could hear him."

"I wouldn't be too sure," came a second voice. "He's liable to be
there waiting for you."

"Well, I am going in after him anyhow," said the first speaker.

A moment later Hal heard the German approaching. He half arose to his
knee and trained his revolver at the darkness ahead of him.

Then there came the sound of the German rounding the bend, and taking
careful aim at the distance above the ground he believed the man's
head would be, Hal pressed the trigger.

There was a terrific roar that echoed and reechoed through the
passageway, a howl of pain and then silence. For a moment Hal waited,
for he did not wish to be caught napping. Then he slowly made his way
forward. Presently he came in contact with a man's body. It was the
enemy.

Propping himself up behind the dead man, Hal felt more comfortable.

"It will be daylight soon," he said to himself, "and they can't get in
here without me seeing them And one man here is as good as a hundred."

Raising his voice, Hal shouted:

"Are you all right, Chester?"

"All right," came back the answer. "One man tried to get in here, but
I got him," for all the time that Hal had been engaged Chester had
been having troubles of his own.

After Hal had left him, Chester, seeking to ascertain the exact
position of the Germans at his end of the cave, and, if possible,
their number, had ventured too close to the opening.

A German, walking past at that moment, struck a match to light a
cigarette, and Chester's form was clearly outlined in the glare of it.
With a hoarse guttural exclamation the German dropped his match and
cigarette an