A code word in his patter advertised to his confederates exactly whereabouts upon your person the treasure was carried. Really the business gave splendid returns. It was Marr, though, who had seized upon it when it merely was a catchpenny carnival device and made of it a real money earner. Moreover, the pickpockets took the real peril. Even in the infrequent event of the detection of them there was no evidence to justify the suspicion that the proprietors of the weighing machine were accessories to the pocket looting. Vince Marr was like that--always playing safe for himself, always thinking a jump ahead of his crowd and a jump and a half ahead of the police. He was never the one to get into a rut and stay there. Long before the old-time grafting circuses grew scarce and scarcer, and before the street-fairing concessions progressed out of their primitive beginnings into orderly and recognized organizations, he had quitted both fields for higher and more lucrative ramifications of his craft. Ask any old-time con man who ostensibly has reformed. If he tells you the truth--which is doubtful--he will tell you it was Chappy Marr who really evolved the fake foot-racing game, who patched up the leaks in the wireless wire-tapping game, who standardized at least two popular forms of the send game, who improved marvelously upon three differing versions of the pay-off game. All the time he was perfecting himself in his profession, fitting himself for the practice of it in its highermost departments. He learned to tone down his wardrobe. He polished his manners until they had a gloss on them. He labored assiduously to correct his grammar, and so well succeeded at the task that except when he was among associates and relapsed into the argot of the breed, he used language fit for a college professor--fit for some college professors anyway. At thirty he was a glib, spry person with a fancy for gay housings. At forty-five, when he reached the top of his swing, he had the looks, the vocabulary and the presence of an educated and a traveled person.