In this ground-breaking book, a bright new light is shed on the subject of the foetal circulation of the blood from all directions. Fifty years ago, the author found a heart which gave up its secrets to him. From his observations on that one little heart, he has assembled for us, the complete anatomy of the foetal heart and circulation, divinely made, according to him. The changes at birth, when the foetus transforms into a baby, are given in great detail. He shows the similarity between our foetal anatomy, and that of the chick embryo, and believes that future research on the chick will confirm all his ideas on human foetal anatomy and the birth changes.