In March, 1955, the Henry Ford Hospital sponsored a Symposium on Cardiovascular Surgery which was attended by 478 doctors from thirty-five states and twenty-two foreign countries. Many prominent physicians working in this field attended, presented papers, or entered into discussion of the various topics covered. Dr. Conrad Lam has done us the great service of getting all of the remarks of this symposium into a volume which makes very exciting reading, indeed. The subject matter includes cardiac catheterization, the electrocardiogram in congenital vascular disease, angiocardiography, the diagnosis and treatment of pulmonic stenosis, adjustments between systemic and pulmonary circulation, evaluation of transposition operations, mitral valve disease, aortic valve disease, septal defects, cardiac arrest, hypothermia, and diseases of the aorta. Besides the manuscripts of formal papers presented at the symposium, this volume contains spirited discussion on the several methods of approach to certain problems on which doctors are not in agreement. Beautifully