"Hope the door's open!" gasped Porky, as he ran fleetly on up the uneven, winding passage.
In the office above there had been an anxious period. Two members of a staff, even though they are only boys, cannot disappear as though the earth had swallowed them without a suspicion of foul play. When General Pershing received the report, he at once sent couriers and scouts to every station where the boys might have gone. On being questioned, the sentries one and all declared that the two boys had not been seen outside of the building. This resulted in a combing out of every cranny that could possibly hold a boy alive or dead.
The hours dragged on. There was a continual passing to and fro for hours until at last there seemed to be absolutely nothing more to do until morning. The tired staff threw themselves into the office chairs, while the General, at the typewriter, commenced a letter. Out of respect to him, there was a complete silence in the room.
On and on clicked the typewriter while the waiting men dozed or smoked or thought of home.
"What's that?" said one of them suddenly, listening intently.
The General stopped writing and looked at the speaker.
"What's what?" questioned a captain, frowning.
"That tapping," said the first speaker. "Sounds like code."
"You have been asleep," said the captain, grinning.
"I hear it," said the General.