nervous system, lead him to form the secret sin and will misdirect that energy so that he will fail to be a perfect boy, when puberty dawns. After puberty dawns, impure thinking and all impure states of the mind will so stimulate the sexual glands that they will secrete more semen than the body can absorb. What cannot be absorbed will in some way be wasted from the body. It is in this way that boys become imperfect men. Nothing that a boy can do is more important than for him to keep his mind pure. Two things will help him; a Christian life and a strong will. One is a gift; the other must be cultivated. =Ways of using up this energy.=--It is very important for a boy or young man to know how to use this energy. We know that if this energy is wasted, it leaves the body weak, makes the mind stupid and hurts us morally. We have learned that when this energy is retained, our physical strength is increased, our minds are more alert and our moral natures develop better. This shows that this energy can be directed to these parts of our being. How is this to be done? Let a boy who is conscious of sexual desire, tempted to practice the secret sin, take a brisk walk for three or four miles and his passion is gone. What became of it? He directed the energy to his muscles and expressed it in labor. Here is another boy with passion, he too is tempted to waste this energy. He has a hard lesson in mathematics. Let him will to take his mind off sex and force it to solve those problems. In an hour or two passion is gone. What became of it? This time he directed it to his brain and it increased his mental power. Here is another boy. His body is healthy and strong, his mind is bright, but he is cold, unkind, unsympathetic and indifferent to the claims of the needy. He has passion and is tempted to waste his energy. What should he do? Let him spend an hour loving the unlovely, boosting the discouraged, speaking kind words and doing noble deeds and his passion will be gone. What became of it? He built his energy into his sentiments, feelings and moral nature.