This well-written book deserves high praise. The first chapter deals with the physiology of bones. Most of the book deals with specific bone changes. Each chapter is practically a monograph and ends with an excellent list of references. The author raises the question as to whether the gravure process for the reproduction of roentgenograms is worth the extra work it has entailed. Those reproduced here, some of the finest ever published, would appear to indicate that they are. The only criticism might be that it would be easier to follow the text if the roentgenographic reproductions were placed in the chapter where they are discussed rather than at the back of the book, but this might have added too greatly to the cost. This book is recommended as a reference work to all who are interested in bone diseases.