On the day the robbery was to occur the band appeared as arranged, the Arcade soon filled with people, and there was prolonged cheering for Mr. Hoyne. Not one clerk left his desk, and when McCluskey tried to open the door with the key he found it would not fit. Through precautions taken by Mr. Washburn, the lock had been changed and instructions given to all clerks to remain at their desks when the band played, which prevented what would have been a very heavy loss to the government. Owing to the way the information had been obtained, and not wishing to expose the source, no arrests were made. Walter Sheridan, known under many aliases, an accomplished "sneak" thief, was a Southerner by birth and of gentlemanly, dignified appearance. In addition to being a sneak, he was also a general all-round thief, counterfeiter and forger. IMPORTANCE OF BEING ON GUARD. One night in 1873, at Chicago, while Mr. Pinkerton was on his way home, he recalls seeing Walter Sheridan, "Philly" Pearson and Charlie Hicks on a street car. He followed them to the Chicago & Alton Railroad station, where he saw them purchase tickets for Springfield, Ill. The following day the vault of the First National Bank of Springfield was robbed of $35,000 by Pearson, while Sheridan engaged the attention of the bank officials, and Hicks remained on guard outside. Later Hicks was arrested, taken to Springfield, convicted and sentenced to eight years in Joliet prison. Pearson fled to Europe. Later Sheridan was arrested at Toledo, O., for this robbery, at which time Mr. Pinkerton identified him, and $22,000 of the stolen money was recovered. Sheridan was mixed up in a great many crimes, but in the last years of his life was looked upon as being cleverer as a first class bank "sneak" than in any other line, although he has been a successful leader of bands of note counterfeiters. "Billy" Coleman, undoubtedly one of the most expert "sneaks" of modern times, who, between 1869 and 1904 was arrested thirteen times, and who spent almost half of his lifetime in prisons, is now serving in the Auburn, New York, state prison, a four and one-half-year term for the theft of $30,000 worth of jewelry from a safe in the Clark Estate building at Cooperstown. The stolen jewelry belonged to Mrs. Ambrose Clark, a daughter-in-law of Mrs. Potter, wife of Bishop Potter. LOOKED LIKE COLEMAN'S WORK.