Sick children require very simple food at short intervals. Variety is not so necessary for a child as for an adult, unless the child has been allowed to form bad habits of eating. Sick children should not be indulged unnecessarily, either in regard to their food or in other ways. However, attempts made during an illness to change the habits of a badly trained child are unwise because usually unsuccessful; parents who sow the wind by neglecting to train their children when they are in good health may as well make up their minds to reap a veritable whirlwind when the children are ill. Even when children are well trained it is difficult and sometimes impossible to prevent them from forming bad habits during sickness. Yet the labor of training a child reaps perhaps at no other time a richer reward than it does when the child is ill, and his recovery might be seriously impeded by unwillingness to accept necessary food, medicine, or treatment. PHYSICAL DEFECTS are faults in the structure of the body; adenoid growths, imperfect eyes, abnormally curved spines, and defective teeth are examples. Most physical defects can be cured in childhood by treatment or by slight operations. If untreated they frequently lead to sickness or to serious impairment of the body, and if neglected until adult life their injurious consequences are generally beyond remedy, even when the defects themselves can be repaired. Some indications of common physical defects are given below; they ought to be more generally known than they are. If a child exhibits one or more of the symptoms mentioned, he ought to be given a complete physical examination by a competent physician, and treatment, if needed, should begin without delay. The idea that children will outgrow these defects without treatment is erroneous. Better, however, than waiting until symptoms appear is the modern way of giving every child a physical examination at stated intervals, a practice already common in public schools where effective health work is carried on. EYESTRAIN frequently comes from imperfections in the shape of the eye; these imperfections can almost always be corrected by glasses. When a child is suffering from eyestrain, the eyes themselves may show indications of trouble; they may be blood-shot, the lids may itch or be crusted or inflamed, or styes may appear. In other cases the symptoms of eyestrain have no apparent connection with the eyes; such symptoms are headache, nausea, vomiting, indigestion, fatigue, irritability, poor scholarship, and nervous exhaustion. If a child shows any of these symptoms, or if he rubs his eyes, frowns, squints, wrinkles his forehead, sits bent over his book, or develops round shoulders, there is sufficient reason for having his eyes examined by an oculist. Examination by an optician should not be considered sufficient.