This is a textbook for cardiologists setting forth the roentgen evidence elicited in examination of the heart and blood vessels. Numerous models have been photographed to illustrate the various points brought out in the roentgenograms. The illustrations are exceptionally clear, and the halftone reproductions of both photographs and roentgenograms are beautifully made. The brief text is distributed, page by page, throughout the work, facing the illustrations. This is an excellent book and should be valuable for any physician utilizing roentgen aid in cardiovascular diseases.