With all man's interest in the heart and its pathology from time immemorial, it has only been within the past 30 years that much scientific progress has been made in the study of this organ. Dr. Taussig has made an excellent presentation summarizing the knowledge recently acquired about congenital lesions of the heart.
The embryology of the heart is recalled in order to better explain the phenomena which arise. We are reminded that until the development of the electrocardiogram, angiography, aortography, and cardiac catheterization we were unable to be certain of the type of congenital defects in infants. Physical findings alone could not differentiate the variations. Now that we have such good diagnostic procedures, our accuracy, and hence our ability to correct, has been greatly enhanced. There is a useful chapter on the medical care of these patients, many of whom were doomed prior to our development of these special