"Had we better tell Mr. Post?" asked Nat.
"Wait until morning," suggested Jack. "Keep the money safe though."
"Right you are," came from Nat, and then the three boys quieted down and went to bed, though it was some time before they fell asleep, so full of excitement were they.
They awoke early, and, without dressing kept watch on the berth where Mr. Post was sleeping. They thought he would soon awaken to see if his money had increased as he had foolishly taken the fakir's word that it would. It was hardly daylight before the boys saw a hand emerge from the miner's berth and grope under his bed.
"Where is it?" they heard Mr. Post mutter.
Then, as his fingers closed on the box which Professor Punjab had put in place of the one the miner had originally left, they could hear him exclaim:
"Here's where I double my money!"
About three seconds later there arose such a yell from Mr. Post's berth that the porter came running from his quarters in alarm.
"Who's bin done committed murder?" the darky demanded.
"Murder!" exclaimed Mr. Post. "I'll murder some one, that's what I will! Look out! I'm a bad man when I'm mad, and I'm mad clear through now!"