The theory of a murder mania is true also of the more brutal classes of crime, such as the car-hook murder, or those that arise out of vulgar brawls in the dens of vice. Awakening unanimous condemnation at the time, they pass into oblivion, and the example idea of the law is frustrated. While in most of the murders which come to light the slayer is found at once or clearly traceable on account of the incidents of passion which were part of the murdered being’s lie, there is the class of murder which is the accompaniment of robbery. The failure to trace this class of criminal is a notorious and deplorable commentary on the efficiency of the police, whose sensibilities alone appear to be in no way quickened by the sudden increase of crime. The Rogers and Nathan murders are as much wrapped in mystery now as at the time of their committal, and the murder of the unfortunate Professor Panormo, a couple of nights ago, seems as if about to be sent to keep company with the other two mockeries of our system of detection of crime, as they all three shake our belief in the police as a protective or preventive force. There must be no effort spared to bring the assassins of Panormo to justice; but the ignorance; sloth and blundering of the Brooklyn police give us little hope of the result. As in the Rosenzweig case, some of the most important links in the chain of evidence have already been worked up by the press writers, and if so-called detectives will only follow the trail public vengeance may yet be satisfied.
"Recent Homicides-the Murder Mania." New York Herald 28 Jan 1872.