“There, then, we are agreed.  Now, Mr. Reed, I will tell you why I have taken the liberty of sending for you.  From what Luke said, I judged that you were a sharp, shrewd man of the world, and might help me in this matter, which I confess puzzles me.  You know the particulars, and therefore, without preamble, I am going to ask you whether you have any theory as regards this robbery.  The box hasn’t walked off without help.  Now, who took it from the bank?”

“If I should tell you my suspicion you might laugh at me.”

“I will promise not to do that.”

“Then I believe that Prince Duncan, president of the Groveton Bank, could tell you, if he chose, what has become of the box.”

“Extraordinary!” ejaculated John Armstrong.

“I supposed you would be surprised—­probably indignant, if you are a friend of Duncan—­but, nevertheless, I adhere to my statement.”

“You mistake the meaning of my exclamation.  I spoke of it as extraordinary, because the same suspicion has entered my mind, though, I admit, without a special reason.”

“I have a reason.”

“May I inquire what it is?”

“I knew Prince Duncan when he was a young man, though he does not know me now.  In fact, I may as well admit that I was then known by another name.  He wronged me deeply at that time, being guilty of a crime which he successfully laid upon my shoulders.  No one in Groveton—­no one of his recent associates—­knows the real nature of the man as well as I do.”

“You prefer not to go into particulars?”

“Not at present.”

“At all events you can give me your advice.  To suspect amounts to little.  We must bring home the crime to him.  It is here that I need your advice.”

“I understand that the box contained government bonds.”

“Yes.”

“What were the denominations?”

“One ten thousand dollar bond, one five, and ten of one thousand each.”

“It seems to me they ought to be traced.  I suppose, of course, they were coupon, not registered.”

“You are right.  Had they been registered, I should have been at no trouble, nor would the thief have reaped any advantage.”

“If coupon, they are, of course, numbered.  Won’t that serve as a clue, supposing an attempt is made to dispose of them?”

“You touch the weak point of my position.  They are numbered, and I had a list of the numbers, but that list has disappeared.  It is either lost or mislaid.  Of course, I can’t identify them.”

“That is awkward.  Wouldn’t the banker of whom you bought them be able to give you the numbers?”

“Yes, but I don’t know where they were bought.  I had at the time in my employ a clerk and book-keeper, a steady-going and methodical man of fifty-odd, who made the purchase, and no doubt has a list of the numbers of the bonds.”

“Then where is your difficulty?” asked Roland Reed, in surprise.  “Go to the clerk and put the question.  What can be simpler?”