In his preface the author states that he has attempted to present the subject of electrocardiography in a practical and concise manner, and he has achieved this objective admirably. He emphasizes the fact that the electrocardiogram is merely a record of the electrical potential of the heart and that the variations from the normal may have a variety of causes. He not only points out the variations due to pathologic conditions but describes the changes which may be due to various constitutional and toxic states.
He divides his book into twenty-five chapters, each dealing with a particular phase of electrocardiography. His discussion of the theory in the first chapter is adequate and clear. Other chapters deal with the various arrhythmias, the patterns of electrocardiographic variations due to coronary disease and the other variations indicative of myocardial involvement or physiologic change. The illustrations are well chosen and show the classic patterns