This book concerns an interesting series of cases, well illustrated with roentgenograms and briefly discussed. It is questionable, however, whether the work will be of great value to the pediatrician or to the roentgenologist. One can hardly agree with the authors that ".... the subject is covered fairly completely in the series of cases reported...." The technic of roentgen-ray examination, preparation and the like is well described. There is, however, much irrelevant matter and too much detailed treatment for a book with this title. Also, too much emphasis is placed on so-called "gastroptosis." When the habitus of the individual is taken into consideration, actual ptosis or falling down or sinking down of the stomach (or colon) is rarely found. The roentgen ray is of little value in the diagnosis of chronic appendicitis.