A defective physical education is one of the primary causes of unhappiness in the marriage relation. A girl cannot be a useful or a happy wife, and she cannot make her husband and her children happy, or even comfortable, unless she be a healthy woman. In Great Britain, a girl in delicate health never expects to be married, and her friends never desire it for her. American girls are proverbially delicate in organization, and frail in health, and their mothers were delicate before them, and their children will be still more delicate after them, unless there is a great reform in physical cultivation. Such a reform is happily beginning in the North. It is yet unthought of here, and in the West and South. Daily exercise by walking, skipping rope, calisthenics, horseback riding, which bring all the limbs and muscles into play; daily bathing in cold water on first rising in the morning; fresh air, simple, plain food, the disuse of coffee and tea, comfortable clothing, the disuse of tight ligatures, corsets, tight-waisted dresses, tight shoes, &c., are the best features of this excellent system of physical training. I believe that a young person with a good constitution to commence with, faithfully following these means for the preservation of health, with the blessing of God, will not fade or break until she is fifty, nor die until she is an hundred years old. I believe that youth, health, beauty, strength, and life can be greatly prolonged beyond their present average, and that we were all intended to live twice or three times as long as with our sad mal-treatment we do live. American children (with the exception of a very few, whose parents know and practise better) grow up drinking hot tea and coffee, eating hot meats and rich gravies and pastries, never bathing, taking little exercise, confined in crowded school-rooms or close house-rooms, and become narrow-shouldered, hollow-cheeked, pale, sickly, nervous, and fretful; they marry early companions as pale, sickly, nervous, and fretful as themselves, and have children _twice_ as pale, sickly, nervous, and fretful as their parents, and discord and other domestic miseries are such inevitable results that we _must_ pity, and can scarcely blame the victims. They cry out in their agony for separation, divorce, for reform in social laws, when the truth is, no reform would cure their evils without a reform in their personal habits; such a reform as would give health, consequently good humor, and lastly, happiness.