There is a constant internal secretion from the testicles of a man just as from the ovaries of a woman, and it has the same beneficial effect on the whole being. It makes a boy what we call manly or virile. The value of the internal secretions of the sex organs in both boys and girls is so great that for that reason, if for no other, the whole sex machinery must be kept in perfect health.

Boys have a certain discomfort to bear which is difficult for them just as menstruation is difficult for girls. But by knowing the meaning of things and by taking care of themselves, they need not be seriously troubled by it. Every once in a while as they are growing up, but before they are old enough to really fall in love and marry and have children, boys feel a sort of stirring of the sex organs—sometimes so much so that it makes them quite uneasy and anxious for relief. The thing to do is to keep as calm as possible and keep very busy and very healthy. Then the discomfort will not be too great, and nature will usually bring relief by letting the accumulated semen pass off during sleep. This is called a seminal emission, and is perfectly harmless. Sometimes a vivid sexual dream comes with it, but that too will do no harm, unless a boy lets his mind dwell on it till the excitement grows unnatural. This emission may happen every two weeks or so, but it is not a regular thing. Boys are sometimes alarmed and fear their sex machinery is out of order, but it is a perfectly natural thing, and only means that the organs are relieving themselves of the extra secretions that are not needed till the time comes for the real sex relation.

Boys and girls sometimes get the habit of handling their sex organs so as to get them excited. This is called masturbation or self-abuse. It is also called auto-erotism. Such handling can be made to result in a climax something like that of the natural sex act. For generations this habit has been considered wrong and dangerous, but recently many of the best scientists have concluded that the chief harm has come from the worry caused by doing it, when one believed it to be wrong. This worry has often been so great that real illness, both of the mind and body has resulted. There is no occasion for worry unless the habit is carried to excess. But remember that until you are mature, the sex secretions are specially needed within your body, and if you use them wastefully before you are grown, you are depriving your body of what it needs. So do not stimulate your sex organs into action intentionally. And do not yield to the impulse to handle the sex organs in order to relieve the pressure which may occasionally feel overwhelming, unless you find that nature does not bring you relief during sleep.

Remember always that your whole sex machinery is more easily put out of order than any other part of your body, and it must be treated with great care and respect all along. It is not fair to ourselves or to each other to do a single thing that will make us either weak or unnatural. Remember that your sex organs have a very powerful, even if invisible, effect upon your whole being, and up to the time that you are really old enough to love some one to whom you want to actually belong, you must let your sex machinery grow strong and ready for its good, happy work when the right time comes. The sex organs during your youth do not need frequent exercise in the same sense that your muscles do. They are active all the time with their internal secretions which strengthen both you and them.

Don't ever let any one drag you into nasty talk or thought about sex. It is not a nasty subject. It should mean everything that is highest and best and happiest in human life, but it can be easily perverted and ruined and made the cause of horrible suffering of both mind and body.

There are two very terrible sexual