The Foetal Circulation is the culmination of many years of interest on the part of the author in the foetal circulation. Information is presented in three parts, all generously illustrated with drawings and diagrams made by the author. The first part describes the events which led up to his discovery of a foetal heart in the mortuary, a discovery that inspired years of work and research. The second takes the reader around the plan of the circulation and analyses its sections. The last discusses various aspects of this subject, including the foetal heart sounds. The changes at birth are...