Heart: Past and Present

new line, and a line that is of great interest. The section dealing with the 'past of the heart is all too brief but is none the less interesting. As the author says, the memories of our great men in the past deserve to be kept green, and this the author has attempted to do by tracing the history of the evolution of cardiology from the period preceding Corvisart to the epoch-making researches of Sir James MacKenzie. To those who have the time and desire to make themselves acquainted with the gradual evolution of our knowledge regarding the heart this first section will be a great pleasure to read. Although brief, it touches on most of the great discoveries and advances made in cardiology up to the beginning of the present century, and discusses the parts played by physiology and pathology in the advance of knowledge. The second part of the book gives a lucid account of the present state of our knowledge as based on MacKenzie's work, It is divided into short, readable chapters, and deals, in its three sections, with most of the modern