This is an excellent little treatise on diseases of the liver and the bile tracts. It is replete with discussions on the newer phases of physiology of the liver and their clinical application as well as with a fairly thorough description of pathologic anatomy, clinical considerations and methods of treatment. The technic of the commoner and more useful laboratory procedures, as the tests of liver function, are described in sufficient detail. Discussions of differential diagnosis, when necessary, are not lacking. Especially creditable are the sections devoted to the cirrhoses of the liver. Under the caption of diseases of the extrahepatic biliary tract the new subject of biliary dyskinesia and the causes, symptoms and treatment are described quite well. One would wish that more space were given to the acute disorders of the gallbladder and that mention of the effect of obstruction of the common duct on the pancreas were made.