"By Jove!" exclaimed Puller, suddenly coming to a halt. "There's the frontier."
Before they were aware of the fact they had arrived within a few feet of the seemingly interminable barbed wire fence that separated occupied Belgium from coveted Holland. As far as could be seen the barrier was unguarded.
"How about it?" inquired Barcroft. "Shall we make a dash and risk it?"
"Steady," cautioned the flight-lieutenant. "Suppose, as is more than likely, there's a high tension wire running along that contraption? We don't want to be pipped on the post, you know."
"I'll test it," declared Billy promptly.
"How?" asked his companions in one breath
"By this," replied the sub indicating the wristlet compass. "You hang on here. I won't be long."
"Be careful, then," said the A.P.
"Trust me for th
