In the two preceding editions I employed the title "Chronic Constipation" instead of the more comprehensive and scientific term "Chronic Intestinal Stasis." I did so for the reason that the delay in the large bowel is (lie primary or causal factor of the condition, and because the title Chronic Constipation at that time called for less explanation than that which I have now rendered familiar to the profession. The chapters by Dr. Jordan, Dr. Nathan Mutch, and Dr. James Mackenzie will serve to make the subject clearer from the radiological, bacteriological, chemical, and clinical aspects.