In a period when authors of texts on electrocardiography apparently have vied with each other in their emphasis on novelty and technical advances within the field, this monograph may seem restrained to the point of dulness. One whose contact with electrocardiography was interrupted two decades ago would feel quite at home as he read the earlier sections of the book pertaining to disorders of the heart beat. Only as he reached the discussion of the form of the electrocardiogram would he realize that empiricism had given way to logic. But even here the technical advances represented in the central terminal method and the exploration of multiple precordial points are described only to an extent demanded in order that clarity may prevail in subsequent discussion of aberrations in form of the ventricular complexes.
This restraint is but a mark of maturity in attitude toward the subject of electrocardiography. Dr. Rosenbaum was