Scope and Contents Sequence: Pendulum heart in mock circulation; close-up of pendulum; air driven hearts; NASA control equipment; wave form of driving air pressure; demonstration of recoil due to abrupt driving air pressure; dog with heart in chest. Wires being repaired; NASA control equipment and recorders, Seidel and Molopoulous; dog coming out of anesthesia with an artificial heart; Norton reciprocating air pump; Norton hearts, right and left; Norton drive (newer model); vacuum control system, anti-suction...