At luncheon Josie appeared at the table, fresh as ever, and Mary Louise began to relate to her and to her grandfather the occurrences of the morning. When she came to tell how Sol Jerrems had declared the money counterfeit, Josie suddenly sprang up and swung her napkin around her head, shouting gleefully:  
"Glory hallelujah! I've got him. I've trapped Old Swallowtail at last."
 
They looked at her in amazement.
 
"What do you mean?" asked Mary Louise.
 
Josie sobered instantly.
 
"Forgive me," she said; "I'm ashamed of myself. Go on with the story. What became of that counterfeit bill?"
 
"Mr. Jerrems has it yet. He is keeping it to show to a commercial traveler, who is to visit his store to-morrow. If the man declares the money is good, then Ingua may buy her things."
 
"We won't bother the commercial traveler," said Josie, in a tone of relief. "I'm going straight down to the store to redeem that bill. I want it in my possession."
 
Colonel Hathaway regarded her gravely.
 
"I think our female detective, having said so much and having exhibited such remarkable elation, must now explain her discoveries to us more fully," said he.
 
"I'd rather not, just yet," protested Josie. "But what have I said in my madness, and what did my words imply?"
 
"From the little I know of this case," replied the Colonel, "I must judge that you believe Mr. Cragg to be a counterfeiter, and that his mysterious business is—to counterfeit. In this out-of-the-way place," he continued, thoughtfully, "such a venture might be carried on for a long time without detection. Yet there is one thing that to me forbids this theory."
 
"What is that, sir?"
 
"A counterfeiter must of necessity have confederates, and Mr. Cragg seems quite alone in the conduct of his mysterious business."
 
Josie smiled quite contentedly. Confederates? Last night's discoveries had proved that Old Swallowtail had two of these, at least.
 
"Please don't lisp a word of this suspicion at present," she warned her friends. "If I am right—and I have no doubt of that—we are about to uncover a far-reaching conspiracy to defraud the Government. But the slightest hint of danger would enable them to escape and I want the credit of putting this gang of desperadoes behind the bars. Really, I'd no idea, when I began the investigation, that it would lead to anything so important. I thought, at first, it might be a simple murder case; simple, because the commonest people commit murder, and to the detective the deed is more revolting than exciting. But we may dismiss the murder suspicion entirely."
 
"Oh, indeed! What about Ned Joselyn's mysterious disappearance?" asked Mary Louise.
 
"Joselyn? He disappeared for a purpose," answered Josie. "I saw him last night—monocle and all—acting as old Cragg's confederate. Ned Joselyn is one of those I hope to land in prison."
 
Her hearers seemed quite bewildered by this positive statement.
 
"Where were you last night?" inquired Mary Louise.
 
"At that five acres of stones we once visited, which is Mr. Cragg's private property. Hidden somewhere in the hillside is a cavern, and in that cavern the counterfeit money is made. I have heard the printing-press turning it out in quantity; I saw Ned Joselyn come away with a package of the manufactured bills and heard Old Swallowtail implore him to 'play square' with the proceeds. There was another of the gang present, also; a man whom I had considered quite an innocent citizen of Cragg's Crossing until I discovered him with the others. I think it was he who operated the press. It has been a very pretty plot, a cleverly conducted plot; and it has been in successful operation for years. But the gang is in the toils, just now, and little redheaded Josie O'Gorman is going to score a victory that will please her detective daddy mightily." Josie was surely elated when she ventured to boast in this manner. The others were duly impressed.
 
"You don't mean to arrest those men alone, do you, Josie?" asked the Colonel somewhat anxiously.
 
"No, indeed. I'm not yet quite ready to spring my trap," she replied. "When the time comes, I must have assistance, but I want to get all my evidence shipshape before I call on the Secret Service to make the capture. I can't afford to bungle so important a thing, you know, and this ten dollar bill, so carelessly given the storekeeper, is going to put one powerful bit of evidence in my hands. That was a bad slip on old Cragg's part, for he has been very cautious in covering his tracks, until now. But I surmise that Mary Louise's pleading for Ingua, this morning, touched his pride, and having no real money at hand he ventured to give the storekeeper a counterfeit. And old Sol, having been caught by a counterfeit once before—I wonder if Old Swallowtail gave him that one, too?—became suspicious of the newness of the bill and so played directly into our hands. So now, if you'll excuse me, I'll run to town without further delay. I won't rest easy until that bill is in my possession."
 
"I'll go with you," said Mary Louise eagerly.
 
Half an hour later the two girls entered the store and found the proprietor alone. Mary Louise made a slight purchase, as an excuse, and then Josie laid ten silver dollars on the counter and said carelessly:
 
"Will you give me a ten dollar bill for this silver, Mr. Jerrems? I want to send it away in a letter."
 
"Sure; I'd ruther hev the change than the bill," he answered, taking out his wallet. "But I wouldn't send so much money in a letter, if I was you. Better buy a post-office order.&............