"I need every bit of it," answered d.i.c.k. "But where are you fellows bound for, and what are you doing with these birds?" he continued, glancing at the motley group of prisoners.
"We"re taking them into Coblenz to let our people give them the once over and the third degree," explained Frank. "They"ve been trying to stir up trouble in the American zone. Cunning little bunch, isn"t it?"
"I"m glad you"ve got your claws on them," d.i.c.k remarked, looking at the group with cold disfavor. "There"s a whole lot more like them that ought to be rounded up. I tell you our people have been too easy with this breed of cattle and they"re going to be sorry for it. We"re so afraid of being harsh that we go to the other extreme. We stand up so straight that we fall over backward. The Germans don"t understand anything but force, and unless we exert it they think we"re afraid to."
"Think we"re too easy?" asked Bart. "You bet we are!" replied d.i.c.k. "We ought to treat them as the French do at Mayence and the British at Cologne. They know the people they"re dealing with, and while they"re just, they"re stern. Anyone who tries to put anything over on them finds that he"s monkeying with a buzz saw.
Unless we wake up from our easy good-nature, we"ll find ourselves with a lot of trouble on our hands."
"You seem to be rather worked up about it," remarked Billy.
"Not a bit more than I ought to be," returned d.i.c.k earnestly. "I have chances of seeing things that you fellows don"t. I"m flying all over the occupied zone, and I tell you that the Spartacides are trying to stir up trouble everywhere. In almost every other town you can see the red flag flying. There"s stormy weather coming, and we"ve got to be prepared for gales."
"That just fits in with what Colonel Pavet of the French Army was telling me to-day," said Frank. "He"s just back from Berlin, and he"s sure there"s trouble afoot."
"Well," said d.i.c.k, "I hope that we"re both false prophets, but I"m afraid we"re not. I"ll have to get on now, fellows."
"What did you come down for?" asked Tom. "Engine trouble?"
"No, it wasn"t that," replied d.i.c.k. "The old girl is working fine.
I just saw an American bunch marching along here and dropped down to say "howdy." I"m off now. See you soon in Coblenz."
With a wave of his hand, he walked over, climbed into his machine, and started skyward.
The boys watched him soaring until his machine was only a dot in the steel blue of the winter sky, and then, as their brief rest period had ended, started on the march to Coblenz.
"One great boy, that d.i.c.k," remarked Frank, when the aviator was finally lost to sight.
"You bet he is," agreed Billy emphatically. "He"s one of the greatest aces that ever climbed into a plane."
"I suppose he must be feeling rather lonely now that he isn"t bringing down his daily Hun," suggested Tom.
"He"s all wool and a yard wide," affirmed Bart. "I"ll never forget that if it hadn"t been for him I might never have got back to you fellows."
"Do you remember the time he swooped down with his machine guns popping and carried us off when we were being taken to a German prison camp?" asked Frank. "I tell you it took nerve for a fellow to charge a whole detachment."
"Oh, he"s got nerve enough for a whole regiment," declared Billy.
"He"d be a mighty handy fellow to have at your back in any kind of sc.r.a.p, and don"t you forget it."
In a short time they reached the town without further adventure and delivered their prisoners into the hands of the authorities.
They were off duty then and had no further a.s.signment for the rest of the afternoon and evening. The early winter dusk was settling down, but it was yet a full hour before it would be entirely dark.
"What are you going to do with yourself, Bart?" asked Frank. "I know of course what Tom and Billy are going to do. They"re going to make tracks for the house where their deities reside."
"Good guess," admitted Billy. "You bet we are."
"I haven"t anything special on hand," replied Bart in answer to Frank"s question.
"Come along with me then," said his chum.
"Anywhere you say, what"s the game?"
"I"m going straight for the alley where they nearly got our number the other night. That thing"s on my mind all the time. It haunts me even in my sleep. I"m going to get to the bottom of that mystery or know the reason why."
"All right. I"m with you."
By the time they had reached the alley it was almost entirely dark. Choosing a moment when the street was empty, they slipped into the alley and made their way toward the further end.
They felt the walls on either side as they went along for indications of a door or opening of any kind. They did the same with the blank wall that closed the alley at the other end.
Nothing rewarded their search. The wall at the farther end was far too high to scale. It seemed impossible for anything except with wings to vanish from the alley as completely as had their a.s.sailants on that memorable night when they had so nearly lost their lives.
"It beats me," said Bart at length. "We saw them go in and we followed them up and they weren"t there. Sounds like black magic, doesn"t it?"
"It surely does," agreed Frank, in great perplexity. "They didn"t go through the back, they couldn"t go through the sides, they couldn"t go into the air, but they did go somewhere."
"Down into the ground," suggested Bart jokingly. "That seems the only place left."
Frank started.
"There"s many a true word spoken in jest," he said. "Perhaps you"ve hit it, Bart. That"s one place we haven"t examined."
"Small chance to examine that just now," said Bart. "You can see it"s all covered with a glare of ice. There isn"t a bit of ground showing."
They walked over the ice-covered surface with scarcely a hope under present conditions of making any discoveries, even if there were any to make. They had to depend entirely upon the sense of touch, for it was by this time pitch dark and Frank did not care to flash his light for fear they might be observed by pa.s.sers-by.
They had come perhaps to within twenty feet of the rear wall, when Frank gave a sudden exclamation.
CHAPTER XI
MARSHAL FOCH AND GENERAL PERSHING
"What is it, Frank?" asked Bart Raymond in a low voice.
"My foot sank in," explained Frank. "It"s softer here for some reason than in the rest of the alley. Just wait a minute till I can feel around here and see what I can make of it."
He felt about cautiously with his feet and found that the ice had softened for a s.p.a.ce of about four feet and that the s.p.a.ce was almost perfectly square.
"There"s some reason why this spot should be different from the rest," he said, after having verified his discovery. "It"s all open to the weather, like every other part of the alley, and there"s only one explanation. There"s heat coming up from beneath.
That means that there must be an open s.p.a.ce beneath this spot. I wish I dared use my flashlight."
"Wait a minute," said Bart. "I"ll slip out to the mouth of the alley and see if the coast is clear. If it is, I"ll give a low whistle and then you flash your light and see what it shows you."
He left his companion, and a moment after Frank heard the signal agreed upon.
Instantly he flashed his light on the rectangular s.p.a.ce that had caught his attention.