This book contains the proceedings of the International Symposium on Cardiovascular surgery held at Henry Ford Hospital, Detroit, Michigan, March, 1955. As such, it includes papers by 60 world-known participants in the fields of cardiovascular physiology, diagnosis and surgical technique. In addition there are contributions from 17 discussants. Approximately a fifth of the volume is devoted to newer diagnostic techniques and clinicalanatomic correlations as related to adjustments between systemic and pulmonary circulations. The remaining portions of the book are devoted to historical aspects and present the status of surgery for various malformations of the heart.