ch time, before the shell was started this way Berger
stood with his right hand resting above his head on the parapet.
Each time he stepped down and into the traverse. Each time,
after the shell burst, he stepped back into this trench. I may
be wrong to feel any suspicions, but is it possible-----"

"Wait!" interposed Captain Ribaut quickly, and stepped into the
traverse at the left. He came back with two French soldiers.
These started down the trench, pouncing upon Private Berger.
With them was Captain Ribaut.

"Oh, you scoundrel, Berger!" suddenly hissed the French captain.
He hurled the fellow to the ground, then held up a slim object,
some six inches in length.

"See!" he muttered to the others. "It is a tiny electric light,
supplied by a very small special battery. The scoundrel, Berger,
had it concealed up his right sleeve. Twice he rested his right
hand on the parapet. He flashed the lamp thrice each time, for
Captain Prescott saw it. Then the scoundrel stepped into the
traverse, where he would be safe from the shell he had invoked
from the enemy. We have known that there was a spy or a traitor
in this regiment, but we were unable to identify him. Gentlemen,
step into the traverses on either side and I will test my belief."

After the others had filed into the traverses Captain Ribaut rested
his right hand on the parapet, causing the little pencil of electric
light to glow three times in quick succession. Then he sprang
back into the nearer traverse.

Bang! A shell landed in the vacated length of trench, tearing
up the duck-boards and gouging the walls of the trench.

"Go for your corporal and tell him to send two men to take this
spy to the rear," Ribaut ordered one of the soldiers who stood
guarding Berger. "Captain Prescott, this regiment owes you a
debt that it will never be able to repay. Berger, your hours
of life will be short, but the story of your infamy will be
everlasting!"

"And, Corporal," ordered Lieutenant De Verne, after Berger had
been started rearward under guard, "see to it that only the most
necessary sentries are posted along here for tonight. Keep the
rest of your men in shelters, for the Huns may feel disposed to
continue shelling this part of the line."

"Come, my American comrades," urged Captain Ribaut, "there is
much more to be seen at other points along this line."

Until within an hour of daylight the French captain and lieutenant
and their American pupils