The liver has been a popular subject for books in the past few years, and there are several excellent ones already in the field. The appearance of the first volume of a two-part monograph "to present in comprehensive form the entire field of present knowledge on the liver under normal and pathological conditions" is, therefore, received with some hesitation. The present volume consists of 11 essays in depth. Hans Elias writing on the anatomy of the liver and A. M. Rappaport writing on the acinar units and the pathophysiology of the liver perform the task splendidly. Each subject discussed encompasses massive amounts of literature, and those authors who discuss their own work as the persistent thread guiding them through the recent advances in the literature succeed better in giving clarity and understanding than those undertaking a review. Thus A. Fischer, discussing liver circulation, the editor discussing electron microscopy, and A.