"Some one has been listening!" exclaimed the lieutenant, rushing towards the front door, followed by the inspector and Fred, while I proceeded to the relief of Steel Spring, who made more noise than all the rest of us.

"There he goes—follow him!" shouted Murden, as a form was seen to run towards the river, although the night was too dark to distinguish who it was; and after running a few yards, the pursuers returned completely baffled, and bewildered at the turn affairs had taken.

"What is to be done now?" asked Mr. Brown, with a bewildered air.

"Vy, I shall have to get a new pair of pants, I s'pose," answered Steel Spring, who imagined that the conversation was addressed to him.

"Silence, you fool; we are in no humor for jesting," returned Mr. Brown, angrily.

"I don't think it any joke to have a big dog tear ye, and spile new clothes," Steel Spring muttered, although not loud enough for Mr. Brown to hear.

"Some person has overheard our plans, and the miners will be forewarned," Murden said. "Who would have supposed that an eavesdropper was concealed within hearing?"

"But what is to be done?" reiterated Mr. Brown.

"There is where I need advice myself," the lieutenant answered looking first upon Fred and then upon myself, as though desirous of our opinions.