Despite the universal interest that has attended the subject of gastrointestinal hemorrhage, there is probably no abdominal disease that is treated in more divergent fashions in different hospitals. Nor is there necessarily any complete agreement among the personnel of any given institution, since these cases fortunately are rare enough that few persons have a wide experience with them. Yet, especially in a teaching hospital with everchanging personnel, it is necessary to evaluate the variious forms of therapy and to establish, if possible, certain criteria and generalizations that can serve as guides in individual cases. It is obvious that these criteria must have undergone revision in the past few years with the advent of such factors as massive blood transfusions, chemotherapy, improved surgical and anesthetic technics and adequate dietary treatment. It is also clear that any conclusions reached in this discussion are not applicable to every case of bleeding ulcer throughout