man lines. I can't understand it at all. He
certainly was a strange man."

"But he did us the greatest service one man can do for another,"
remarked Roger. "He saved our lives, fellows! Don't forget that!"

"No," agreed Jimmy in a low voice. "Whatever happens we must never
forget that."

They trudged on in silence a little longer, and then Franz broke out
with:

"And speaking of wondering, Jimmy, what do you suppose has become of
Sergeant Maxwell?"

"And your money, Blazes," added Bob.

"Our money," corrected his chum. "Haven't I told you that the five
thousand francs is the joint property of the five Brothers."

"All right--have it your own way--anything if or a quiet life!" said
Bob, quickly. "I was just wondering, that's all."

"I have been wondering, too," admitted Jimmy. "The disappearance of
Maxwell and the cash is almost as much of a mystery as is Captain
Frank Dickerson."

Twice that day, as they tramped along, seeking in vain for the
American lines, they saw small parties of German soldiers. And on
both occasions the Khaki Boys were fortunate enough to sight the enemy
first, so they could conceal themselves in patches of woods.

They were now in a country where there were larger tracts of forest,
and after coming out of one of these thickets Bob remarked.

"Fellows, do you know what I think?"

"Do you, really?" chafed Roger.

"Do I really what?" asked Bob, a bit disconcerted.

"Think!" exclaimed his chum. "I thought you'd given that up."

"This war is enough to make a chap give it up," Bob agreed. "But
seriously, fellows, I think we're lost--that we've been going around
in a circle, and we aren't any nearer our lines than when we were at
the red mill. Not so near, in fact, for there we knew that some of the
doughboys were not more than a mile away. But here--"

"Bob, I shouldn't be surprised but what you are right!" exclaimed
Jimmy. "It does seem funny that, with all our traveling, we haven't
come to the American lines. They can't be so far away as all this. I
guess we must have traveled in a circle. Pity we haven't a compass."

"Can't you steer by the sun?" asked Franz. "We started south, and if
we keep the rising sun on our left and the setting sun on our right,
we're bound to go south."

"The trouble was yesterday that we didn't see the sun after we started
hiking," declared Jimmy. "It's all right now--we're surely going
south. But how long we can keep it up there's no telling."

"We