The tale of undiscovered murders can never be ended, and additions are made to it continually. In this country fresh cases crop up year after year, and it would take volumes to catalogue them all. I will mention but one or two more, merely to point the moral that the police are often at fault still, even in these latter days of enlightened research, where so much makes in favour of the law. Thus the Burton Crescent murder, in December, 1878, must always be remembered against the police. An aged widow, named Samuel, lived at a house in Burton Crescent, but she kept no servant on the premises, and took in a lodger, although she was of independent means. The lodger was a musician in a theatrical orchestra, away most of the day, returning late to supper. One evening there was no supper and no Mrs. Samuel, but on making search he found her dead body in the kitchen, lying in a pool of blood. The police summoned a doctor to view the corpse, and it was found that Mrs. Samuel had been battered to death with the fragment of a hat-rail in which many pegs still remained. The pocket of her dress had been cut off, and a pair of boots was missing, but no other property. Nothing could have happened till late in the afternoon, as three workmen, against whom there was apparently no suspicion, were in the house till then, and the maid who assisted in the household duties had left Mrs. Samuel alive and well at 4 p.m. Only one arrest was made, that of a woman, one Mary Donovan, who was frequently remanded on the application of the police, but against whom no sufficient evidence was forthcoming to warrant her committal for trial. The Burton Crescent murder has remained a mystery to this day. So has that of Lieutenant Roper, R.E., who was murdered at Chatham on the 11th of February, 1881. This young officer, who was going through the course of military engineering, was found lying dead at the bottom of the staircase leading to his quarters in Brompton Barracks. He had been shot with a revolver, and the weapon, six-chambered, was picked up at a short distance from the body, one shot discharged, the remaining five barrels still loaded with ball cartridges. The only presumption was that the murderer's object was plunder, personal robbery. Mr. Roper had left the mess at an earlier hour than usual, between 8 and 9 p.m., on the plea that he had letters to write home announcing his approaching arrival on short leave of absence. A brother officer accompanied him part of the way to Brompton Barracks, but left him to attend some entertainment, Roper declining to go at once, for the reason given, but promising to join him later.