=When do these emissions begin on a young man?=--This depends upon the sexual development and the habits of the youth. In some it occurs much earlier than in others. If a young man has lived a continent life, he may expect an occasional emission when he is eighteen or twenty. If he has used narcotics, entertained impure thoughts, or practiced the secret sin, he may expect them sooner. All young men who practice the secret vice would have frequent emissions if they were not disposing of their surplus energy in this way. The young man who thus voluntarily gratifies his sexual desires is losing more energy than he would be doing if he were to discontinue the habit. Among many letters received recently are letters from two young men living nearly a thousand miles apart. Their cases are very similar. Each began the secret sin when he was only six or seven years old; both were taught the vice by companions older than they; neither ever received a word of warning from a parent or teacher. One got to practicing the vice as often as seven times a day before he was thirteen. He is now eighteen and having emissions as often as four times a night. He has varicocele on both sides. The other one is now twenty-two, has practiced the secret sin as often as four times a day, and now has varicocele on the left side. Of course these are extreme cases, but they are more common than most people think. =Are there some young men who never have emissions?=--It is no doubt true that all normal young men who are living pure lives have an occasional emission. In a few young men it may occur during urination and therefore be unobserved. A young man who willfully dissipates his energy as fast as it is formed, by means of masturbation or prostitution, may not have emissions. But let him stop his bad habits and he will experience them. =Are seminal emissions injurious?=--Unnatural emissions are injurious; the natural emissions are not.