In anemia there is either a decrease in the number of red blood corpuscles or an insufficient amount of blood. When there are too few red blood corpuscles, “oxygen carriers,” the necessary quantity of oxygen is not furnished the tissues and the system becomes clogged with waste. The patient easily tires and is disinclined to exercise, thus the decreased number of red corpuscles are not kept in forceful circulation and the carbon dioxid is not freely thrown off by the lungs; this further aggravates the condition. Since the blood is made from the foods assimilated, the point is to supply food which builds blood tissue. Exercise and deep breathing will encourage the elimination of waste and promote a forceful circulation which insures nourishment to the tissues. As stated, it is the food assimilated, not always the amount eaten, that counts. In this condition it is of vital importance that one keep up a good circulation; the stomach, intestines, liver, and spleen must be strengthened through exercise and deep breathing of pure air, for the red blood corpuscles are oxygen carriers, and the insufficient supply must do double duty or the waste of the system will not be oxidized and eliminated, and the blood-forming organs will further fail in their task. Exercise must be graded to the case, being gentle at first so as not to overtire the easily fatigued muscular system. It should be intelligently directed to the joints and to the vital organs, particularly to the liver and intestines, that they may be kept in normal activity. The exercises must be followed with plenty of rest, and accompanied by deep breathing. The habit of full breathing is one of the most effective agencies in correction of anemia, because the red blood corpuscles must carry their full quota of oxygen or the system is clogged with waste. Oxygen also rejuvenates these corpuscles. Unless the blood furnished to the tissues is of good quality and contains sufficient oxygen, the nutrition of the body suffers, the activity of the various organs is hindered, and the health becomes impaired. Functional derangements, particularly in the digestive tract follow, and faulty digestion and difficult absorption further impoverish the blood. The work, therefore, in the correction of anemia, lies in foods which build blood and in daily exercise and deep breathing of fresh air, accompanied by rest. The windows at night should admit a good circulation of air through the sleeping room, and as much time as possible should be spent in the open air. Anemia occurs many times in growing girls, due to an improperly balanced diet, caused by a capricious appetite and by the habit of satisfying this appetite with sweets, pickles, etc.