“How did you know when the hours were up?”
“Guessed it,” said Blunt quickly. “Are you wide awake enough now, my lad? You know where all the men are stationed?”
“Oh yes.”
“Repeat the places.”
Stan ran rapidly through the posts—east, west, north, south, back and front—and Blunt grunted his satisfaction.
“Good!” he said. “The fresh men have relieved those who watched with me, and there is a new password. Don’t forget it. As soon as you approach you’ll be challenged with ‘Who goes there?’”
“Yes; I understand,” said Stan eagerly.
“No, you don’t. What word will you give to prove that you are a friend?”
“Don’t know.”
“Of course not. Remember it, then. ‘Cartridge.’ Understand?”