In studying this subject, there seems to be a pathologic parallel between the stomach and certain portions of the colon. For instance, food is detained in the stomach for a few hours by the action of the pylorus. There is, then, no depot till the cecum is reached. Fecal matter is somewhat detained here by gravity. It is next detained above the so-called sphincter Oberne and held in the sigmoid flexure and descending colon for some time. The final depot is the rectum. Overwork, nervous strain,

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... discretion as to diet and hours for meals, disturb and change the secretions of the stomach, producing indigestion and, finally, gastric or duodenal ulcers. By irregular habits as regards the bowels, nervous strain, etc., an habitual and atonic con-