This book is in line with the French custom of monographic treatment of highly restricted subjects. One would hardly think that there was enough to say about the roentgenology of the gallbladder to fill a whole volume, and still one finds here surprisingly little superfluous matter. The subject is taken up from every possible angle. Especially valuable are the numerous excellent reproductions of roentgenograms and diagrams. The book should prove a storehouse of information not only for roentgenologists but also for physicians in general. There is a thorough bibliography, with good representation of the American literature.