The author's effort to keep this volume abreast of the advances in radiology has been successfully carried out in that the work really represents what its name implies. Extensive alterations and additions to the chapter on bone diseases have taken account of the remarkable advances in calcium metabolism and endocrine diseases as reflected in roentgenograms. Enlargements have been made in the chapters on the skull, the gastro-intestinal tract and the lungs. The chapters on the heart, the biliary tract and the renal tract have been entirely rewritten. Of necessity in a work of this size there is much condensation, but all the important radiologic advances are described. The illustrations have been increased by seventy new contributions; some of the old ones have been replaced by better and more characteristic specimens. As a record of the recent advances in radiology this book can be recommended.