This is one of those practical books that give practical advice and make practical suggestions on a very practical subject to the great majority of physicians of today—to those who use automobiles. It is, in a way, an encyclopedia on automobiles and automobile parts, and on the inner combustion engine. A complete index makes ready reference to any subject concerning the automobile, whether propelled by gasoline, vapor, steam or electricity. Detailed information on the Ford and the Packard car is given at the end of the book, in the form of addenda. In the body of the book, however, the special features of different cars are discussed.