The Department of Health, in examining the sanitary or hygienic condition of a school building, would not devote all its attention to the top story to overcome unhygienic conditions; it would probably direct its attention to the trap and vent of the sewer of the building to see that there was no retention and filling up of the pipe to befoul the atmosphere of the structure. Why then so much attention to the head or top story of the human temple, and so little to the trap and vent of its sewer? Are modesty and ignorance to defeat the progress of hygienic measures dealing with the stomach and bowels of our school children? How long will those abdominal incubators of poisonous microbes and gases be allowed to infect not only a school building but all its occupants as well? The absorption into the system of serous, fibrinous or albuminous mucus exudations from the invasion of chronic inflammation through all the layers of the tissues of the anus (Figure 1), rectum, and sigmoid flexure, as well as through the adjoining fatty tissue in the pelvic space around the organs (Figure 5), under the skin and between the muscles of the buttocks, goes on continuously, creating an extensive inflammable area and source of exudation of broken-down tissues. (See Chapter III.) It is a grave pathological condition and the source of mucus auto-intoxication, and its symptoms ought to be differentiated from those of fecal auto-intoxication. This mucus exudate has an intensely irritating effect on the nervous system, especially when an acute intestinal mucus storm has developed, torturing its victims and unfitting them mentally to attend to the ordinary duties of the day. Very often this is accompanied by more or less pain or muscular soreness. These annoying symptoms occur very early in the history of Proctitis and Sigmoiditis, and clinical experience has demonstrated to me and to my students the necessity for infants and children being examined in order to determine whether inflammation exists in the anus and rectum, and thus early cut short the progress of the disease and its numerous and familiar symptoms, which I may here enumerate, to wit: indigestion, flatulency, coated tongue, foul breath, bad taste in the mouth, capricious appetite, nausea, intestinal colic, cramps and pains, diarrhea, headache or band of pain encircling the head with sense of constriction, neuralgia, pain about the heart, cold hands and feet, malnutrition, anemia, emaciation, dry skin, seborrhea sicca, carbonic acid toxemia, sallow complexion, liver spots, jaundice, acute bilious attacks, drowsy states, mental torpor, bad temper, night terrors, irritability, melancholia, vertigo, dizziness, loss of memory, insomnia, drawn face, tired feeling, unrestful sleep, easily fatigued, subject to colds, catarrhal affections of the ears, eyes, nose, throat, etc., decay of teeth, dry cough, loss of hair, impaired vision, sterility, impotency, mucus and membranous cords and casts from the