it as that of a long resident in a penitentiary. Prison life, if taken in large doses and often enough, will give the most moral men in the world prison features; and it is no wonder that men who make a business of crime and are so much in prison possess them. Even men who are busied in the detection of crime have more or less similar facial characteristics. I have never met a detective who had been long in the service that did not have some features or habits common to the criminals he was engaged in hunting down; and I know several detectives who have been taken for criminals by criminals, simply because of their looks. In regard to other abnormalities, such as absence of hair on the face, remarkable eyesight, length of certain fingers, insensibility to pain, unusual development of the lower jaw, high cheek-bones, fixed eyes, projecting ears, and stooping shoulders, which are said to differentiate the criminal from the ordinary human being, I can only report that I have not found them to be any more noticeable in the criminal class than among normal people. In the majority of cases the criminal can grow a beard, and is glad that he can do so. Without this ability to change his looks he would be greatly handicapped in his business; and, as I know him, he usually has a beard once in two years. It has been said that his habit of tattooing is evidence of his obtuseness to pain; but it is not easy to see why. At the worst, it is not a trying ordeal; and the little suffering that it does occasion is as much felt by the criminal as by any one else. Moreover, those that I know are not so prone to be tattooed as is reported. Indeed, it is considered a mistake to have marks on the body, for they naturally aid detection. On all these questions of the senses, criminologists have relied altogether on what the criminal himself has told them. They give him something to taste or smell, or prick him with a needle, and his reply is noted down as scientific evidence. How do they know that he has not some object in view in telling them what he does? He may want to appear degenerated or queer, or is perhaps simply mischievous and says the first thing that comes into his head. Until instruments have been invented which can discover the truth quite independently of the criminal's personal testimony, nothing really positive can be known concerning whatever freaks of the senses may have been wrought in the criminal's organization.