During the past year I have had the opportunity of studying the blood of many patients applying for treatment for obscure abdominal pains and I have been struck by the uniformity of the findings in the cases in which auto-intoxication from colonic stasis lay at the bottom of the trouble. This has led me to become an adherent of the school which believes that auto-intoxication from the intestinal tract is a possibility and in fact a fairly frequent occurrence. But I believe that there are also many cases of constipation in which there appears to be no intoxication, and these patients do not seem to present the same blood-picture. In them, evidently, the intestinal mucosa and the liver-filters are still efficient barriers in guarding the body-cells from the results of the fermentation and the putrefaction of the intestinal contents.
While the cause of the colonic stasis may be various—bands,