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160 Potzfeldt had just brought out of the house, the meaning was obvious.

Of course there were pigeons in that cage, homing pigeons at that, like the one Tom had shot ! Doubtless had that one escaped its tragic fate the message it carried would have been delivered to the owner of this lonely house, in turn to be handed over to one of the messengers from German headquarters.

And now the German captain, stooping over, took possession of the cage containing at least two of the trained birds. They would be carried to some point from which, on another night, a daring Boche airman would attempt to take them far back of the French front, to hand over to the agent who was in communication with the master spy, Carl Potzfeldt.

It was all very simple. Nevertheless it was also amazing to realize how by what might be called a freak of fate the air service boys had been enabled to discover these facts. But for the accident to the motor they would not have dreamed of making a landing short of the aviation field at Bar-le-Duc. Then, had they not caught that woeful sound of loud sobbing, the idea of looking around would never have occurred to them.

The officer was now starting back to his car, which would carry him post-haste to German