"Where is the store you claim to be connected with?" asked the policeman. "It's at No. -- John street. Mr. Roger Bacon is the proprietor." At that moment the manager of the store entered with the diamond salesman. Both of them immediately identified the accused as the man who had visited the store an hour or more since, and the manager corroborated all that Dick had already told about the circumstances of the case. "But you have no evidence against the man," said the policeman. "I understand that he brought a diamond here to pawn. I'd like to see it," said the manager. The officer handed the five-carat stone to him. He looked it over and handed it to the salesman. "Is that the stone that you missed?" he said. "Yes, that appears to be the stone," said the clerk. "How do you recognize it?" asked the officer, who believed that all unset diamonds of a size looked as much alike as all peas of a size. The salesman explained that it was a part of his business to make himself familiar with the looks and quality of all diamonds he had charge of. "Well, this may or may not be the stone you assert is missing from your stock," said the policeman; "but as long as you can't show that this man took it, I don't see how I can run him in without a regular warrant." "I think I can throw some light on the matter," said Dick at this point. All hands looked at him. "Here's a piece of gum which I saw that man throw into the street after picking something out of it," he said, handing the gum to the manager. "It evidently held the diamond, for it bears a clear impression of a five-carat stone." "It does, indeed!" said the manager. "The lady who was in the store looking at rings when you sent me on the errand came up to that man and handed him that piece of gum. It was the singularity of their meeting that aroused my suspicions and caused me to watch and then follow them to this place, particularly after I picked the gum up and saw the impression of a diamond in it. I judged at once that the man must have hidden the stone in the gum and left it somewhere about the counter where the lady found it afterward and brought it to him." Dick's words seemed to make the matter quite clear to the manager, who was familiar with many of the tricks adopted by diamond thieves to ply their vocation without detection.