Having operated on eight-two patients for esophageal diverticulum of the pulsion type, having had a number of intrapleural esophageal diverticula of the traction type to deal with by nonoperative measures and having successfully operated on a large intrapleural supradiaphragmatic type of diverticulum, I thought it possible that a presentation of some of the knowledge obtained in these experiences would prove of interest and of value. Pulsion diverticula far outnumber all other types of esophageal diverticula, according to my experience, and occur as small (fig. 1) intermediate (fig. 2) and large (fig. 3) diverticula always located, since they are the result of a bulging of esophageal mucosa through a congenital muscular defect at this point, at the oesophagopharyngeal level. Traction diverticula (fig. 4) are most commonly situated within the pleura and at or near the level of the main pulmonary bronchi, since they are associated with inflammatory processes in the bronchial