It is quite generally believed that a baby should cry to exercise its lungs. A healthy, comfortable baby will do little or no crying, and it is not necessary. It is not difficult to give the little ones some exercise to fill their lungs. Babies can hang on to a finger or a thin rod tenaciously. Elevate the infant that does not cry thus a few times above the bed and let it hang for a few seconds each time. This throws the chest forward and exercises the lungs. What is more, this small amount of gymnastic work is thoroughly enjoyed. It helps to build strength and good temper. The crying helps to make the baby ill-tempered and fretful. A little crying now and then is all right, but much indicates discomfort, disease or a spoiled child. It would surprise most mothers how good babies are when they have a chance to be good. After reading this, some are sure to ask how many ounces to feed the baby. I don't know. No one else knows. Different babies have different requirements. The key is given above. If the babies become ill it is nearly always due to overfeeding and poor food, so the proper thing to do is to reduce the food intake. A healthy baby is a source of unending joy, while a sick one saps the mother's vitality. It is too bad that the art of efficient child culture is so little known. CHILDHOOD. Children may roughly be divided into two types, the robust and the more delicate or nervous ones. The robust children can stand almost all kinds of abuse with no apparent harm resulting, but the immunity is only apparent. The growing child naturally throws off disease influences easily and quickly, but if the handicap is too great the child loses out in the race. The nervous type can not be abused with impunity, for the bodies of these delicately balanced children are easily disturbed. They must have more intelligent care than is usually bestowed upon the robust type. If the care is not forthcoming they become weak in body, with an unstable nervous system, or perish early. Some parents complain because other people's children can do what their own can not and they wonder why. No time should be wasted in making such comparisons, for no two children are exactly alike, as no two leaves and not even two such apparently similar objects as grains of wheat are exactly alike. Therefore the care necessary varies somewhat, though it is basically the same. If the nervous type is given proper care, good health will be the result. These children do not tolerate as much exposure or as much food as do the robust children. The important thing is to learn what they require and then see that there is no excess, and in this way allow the child to grow physically strong and mentally efficient.