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" on! Wait a minute!" exclaimed Tom, as he caught hold of his chum. Where are you going?"

"Out to give warning to a policeman or to some army officer about that spy!" exclaimed Jack. "We know him to be such, and now, with Bessie's word that he was with Potzfeldt, it's enough to cause his arrest."

"Yes, maybe it is," agreed Tom, who was a bit more cautious than his impetuous chum. "But if we do that we may spoil the plans of Major de Trouville. Better let matters take their course. Jack. That spy may not know we are here, and again, he may. But if he doesn't, rushing out now would be sure to give the secret away. As it is, there is a chance we may keep it."

Jack, caught midway in his impetuous rush from the room, stood reflectively. What Tom had said to him appeared to make an impression. Then Bessie added her words of advice.

"Yes, Jack," she said, "I think it would be rather rash to go out now and confront that Rh