Positive Signs.--The absolutely positive signs of solitary vice are very few. Of course the most certainly positive of all is detection in the act. Sometimes this is difficult, with such consummate cunning do the devotees of this Moloch pursue their debasing practice. If a child is noticed to seek a certain secluded spot with considerable regularity, he should be carefully followed and secretly watched, for several days in succession if need be. Many children pursue the practice at night after retiring. If the suspected one is observed to become very quickly quiet after retiring, and when looked at appears to be asleep, the bedclothes should be quickly thrown off under some pretense. If, in the case of a boy, the penis is found in a state of erection, with the hands near the genitals, he may certainly be treated as a masturbator without any error. If he is found in a state of excitement, in connection with the other evidences, with a quickened circulation as indicated by the pulse, or in a state of perspiration, his guilt is certain, even though he may pretend to be asleep; no doubt he has been addicted to the vice for a considerable time to have acquired so much cunning. If the same course is pursued with girls, under the same circumstances, the clitoris will be found congested, with the other genital organs, which will also be moist from increased secretion. Other conditions will be as nearly as possible the same as those in the boy. Stains upon the night shirt or sheets, occurring before puberty, are certain evidences of the vice in boys, as they are subject, before that time, to no discharge which will leave a stain resembling that from the seminal fluid, except the rare one from piles. In the very young, these stains do not occur; but when the habit is acquired before puberty, a discharge resembling semen takes place before the ordinary period. Of course, the stains from urine will be easily distinguished from others. The frequent occurrence of such stains after puberty is a suspicious circumstance. A discharge in some respects similar may occur in girls. Before puberty, the effect of the vice upon the genital organs is to cause an unnatural development, in both sexes, of the sensitive portions. When this is marked, it is pretty conclusive evidence of the vice. In girls, the vagina often becomes unnaturally enlarged, and leucorrhoea is often present. After puberty, the organs usually diminish in size, and become unnaturally lax and shrunken. All of these signs should be thoroughly mastered by those who have children under their care, and if not continually watching for them, which would be an unpleasant task, such should be on the alert to detect the signs at once when they appear, and then carefully seek for others until there is no longer any doubt about the case. RESULTS OF SECRET VICE.