It is well to bear in mind the fact that one or two suspicious signs are not evidence of the disease. It is likewise well to remember that the habit may be found where least looked for, and where one would have a right to expect perfect purity. Prejudice must be allowed no voice upon either side. A writer has said that every young person under puberty ought to be suspected of the disease. We can hardly indorse this remark, in full, but it would be at least wise for every guardian of children to criticize most carefully their habits and to quickly detect the first indications of sinful practices. Parents must not think that _their_ children, at least, are too good to engage in such sinful abuses. It is most probable that their children are very like those of their neighbors; and any amount of natural goodness is not a protection against this insidious vice when it presents itself as a harmless pleasure to the unwarned and ignorant child. Suspicious Signs.--The following symptoms, occurring in the mental and physical character and habits of a child or young person, may well give rise to grave suspicions of evil, and should cause parents or guardians to be on the alert to root it out if possible:-- 1. _General debility_, coming upon a previously healthy child, marked by emaciation, weakness, an unnatural paleness, colorless lips and gums, and the general symptoms of exhaustion, when it cannot be traced to any other legitimate cause, as internal disease, worms, grief, overwork, poor air or poor food, and when it is not speedily removed by change of air or appropriate remedial measures, may safely be attributed to solitary vice, no matter how far above natural suspicion the individual may be. Mistakes will be rare indeed when such a judgment is pronounced under the circumstances named. 2. _Early symptoms of consumption_--or what are supposed to be such--as cough, and decrease in flesh, with short breathing and soreness of the lungs--or muscles of the chest--are not infrequently, solely the result of this vice. That such is the case may be considered pretty surely determined if physical examination of the lungs reveals no organic disease of those organs. But it should be remembered that solitary vice is one of the most frequent causes of early consumption. Several cases which strikingly prove this have fallen under our own observation.