At New Scotland Yard, London, a little boy was brought in and two sets of his finger prints taken and filed away in separate steel deposit vaults. The boy was an orphan and an heir to a very large fortune in Africa. His finger prints were taken as a protection, so that if anything happened to him, or he disappeared, or he had to prove his identity to claim his estate, or provided he died and proof of the identity of the body was required, such proof could be shown with absolute certainty. An interesting case nearer home is that of a recent arrest in Chicago of a man that the authorities were convinced was a professional criminal, and from his accent and other indications they believed him to be an English professional crook. His Bertillon measurements and finger prints were taken at the Bureau of Identification by Captain M. P. Evans, superintendent of the bureau, and a copy of the photograph and finger prints given to Mr. William A. Pinkerton, of the Pinkerton National Detective Agency. Mr. Pinkerton, who is a personal friend of Frank C. Froest, superintendent of the Criminal Investigation Department of New Scotland Yard, London, mailed the finger prints to him without any other memorandum, data or the picture, simply making the test on the finger prints. He received a reply from Inspector Frank C. Froest, giving the name of the criminal, and a long record of some fourteen arrests and the picture, so as to authenticate the identification, and also a statement from Superintendent Froest that the identification was made inside of three minutes from a collection of over 70,000 records. The identification was absolutely correct. The prisoner, on being shown the letter, admitted his guilt. If a clerk handles papers or letters on his employer's desk, it is a very easy matter of detection. By means of a little syringe filled with a powder blown on the paper, the finger prints are reproduced with startling clearness. BROKEN GLASS PROVES GUILT. Some pieces of broken glass had been taken to Scotland Yard, four days previous to the Ward, Lock & Co. burglary. These fragments of glass had been picked up at the London City Mission, where a burglar had broken through a window and carried off a clock and other articles. No one could be connected with the crime after a most thorough detective hunt. The one remaining source was a bit of glass on which finger prints had been noticed. These were photographed and compared with the finger prints of all the recent records. Surprisingly enough, they corresponded exactly with those of the young clerk who had been found stealing books from the publishers' warehouse. Instead of being a clerk, he was a very adept young burglar. On this new evidence the prisoner was sentenced to twelve months at hard labor.