To make intelligible the physics of the digestive and egestive processes, we must understand the apparatus. One would naturally think that were the bends or curves of the large intestine undone, it would be found to be a long, straight, smooth canal or bore like a rubber tube. But such is not the case. The outer muscular longitudinal bands are much shorter than the musculo-areolo-mucous tube, an arrangement which brings about a transverse puckering of the gut and mucous membrane, thus forming valves, folds, sacs or pouches at short intervals along the canal. These transverse folds or valves inhibit the too hasty passage of the feces along the bowels by checking and retaining the egested product in the large recesses or pools between the folds; they thus serve as so many dams in the passage of feces toward elimination. This wise provision of Nature to moderate the steady motion of the feces as they proceed toward the sigmoid flexure or receptacle, to wait there till there is a proper stimulus for expulsion, is wofully abused by man. He is quite willing to take foodstuffs three or four times a day, to fill the long row of intestinal pools between the dams with feces and gases in all stages of decomposition, not dreaming of the danger from developing bacteria and their absorption into the system. Really he is inclined to eat at all times, yet begrudges a few minutes spent in a hurried effort to perform the act of defecation once in twenty-four hours. Some of us even have our minds absorbed in reading while awaiting an "automatic action" of the bowels. What a contrast between the gusto and time spent in taking foodstuffs and the indifference and indolence regarding the action of the bowels, unless indeed severe biliousness or diarrhea reminds us strongly of our sewer of waste products. An attack of acute or chronic diarrhea is the penalty some pay for long inattention to the demands nature makes for intestinal cleanliness three times in twenty-four hours. Constipated people, semi-constipated people, irregular people and twenty-four-hour people, are not healthy. They are constantly being poisoned by the abnormal products of indigestion and putrefaction resulting from fecal stagnation, which products enter the blood and circulate through every tissue of the body.