This book deals with a study of the alimentary tract in health and disease by means of special roentgenologic technic. A watery suspension of barium, much thinner than is ordinarily used, is employed in outlining the folds of the various portions of the alimentary canal, producing a relief pattern based on normal and pathologic anatomy and physiology. The technical considerations also include special attachments to the x-ray apparatus, and unusual care in fluoroscopy and plate taking. There are many beautiful illustrations of normal and pathologic conditions taken with this method. There is also a correlation between the roentgenologic observations and postmortem studies. The book is to be highly recommended to any one interested in disease of the alimentary tract, especially the roentgenologic aspect.