"Signs of Self-Abuse.- The net which this vice weaves around its victims is so strong, and its meshes are so elaborately interwoven with all his thoughts his habits, and his very being, when it has been long indulged that it is important to be able to detect it when first acquired, as it may then be much more easily overcome than at any subsequent period. It is often no easy matter to do this, as the victim will resort to all manner of cunning devices to hide his vice, and will not scruple to falsify concerning it, when questioned. To be able to accomplish this successfully, requires a careful study, first of the signs by which those who indulge in the practice may be known, and, secondly, off the habits of the individuals."