This work is written in a rather simple German style. Each section is furnished with an extensive bibliography. The technic is given somewhat briefly, as the work deals largely with diagnosis, as mentioned in the title. The esophagus is well taken care of along with the other parts of the gastro-intestinal tract. An interesting part of this section on the gullet is that portion dealing with diaphragmatic hernia and its differentiation from diverticulosis. The anatomy and physiology of each portion of the gastro-intestinal tract are taken up in the proper section. A number of helpful diagrams are furnished throughout the work. Whenever possible, a photograph of the operative postmortem specimen is given along with the roentgen observations. The illustrations, which are numerous, are excellent halftones, representing chiefly x-ray films. No mention is made of duodenitis. This is an excellent book.