These "Transactions" are for the thirty-third annual meeting at Detroit, May 5 and 6, 1898. The papers presented at the session and included in the volume are grouped under the heads of: "Septic Diseases of the Abdomen and Pelvis," "Obstetrics and Gynecology," "General Medicine," "Surgery and Ophthalmology." Under the first heading are papers on: "Etiology," "The Blood," "Septic Infection of the Peritoneal Cavity, its Diagnosis and Treatment from a Medical Standpoint." "The Medical Treatment of Septic Peritonitis," "The Treatment of Septic Diseases of the Pelvis," "The Haughey Suture." Other papers are: "Bottini's Operation," "Nephrectomy," "May a Rapid Pulse in Appendicitis Contraindicate Operation?" "Reflections on the Treatment of Appendicitis," "The Frequency, Causes and Prevention of Post-operative Ventral Hernia," "Transillumination of the Stomach with Demonstration on the Person," "The Four Tonsils," "Practical Value of Diagnosis of Presentation in Instrumental Delivery," "Some Anomalies of the Kidneys," "Kraurasis Vulvæ," "Physical Training an Essential Factor