ABSTRACTS This section of THORAX is published in collaboration with the abstracting journal, ABSTRACTS OF WORLD MEDICINE, published by the British Medical Association. In this JOURNAL some of the more important articles on subjects of interest to chest physicians and surgeons are selected,for abstract, and these are classified. No one section is necessarily represented in any one issue. Thoracic Surgery Reflux Esophagitis, Sliding Hiatal Hernia, and the Anatomy of Repair. ALLISON, P. R. (1951). Surg. Gynec. Obstet., 92, 419.