This monographic study is on venous circulation which has been the subject of previous publications by the author and his pupils. After describing a new apparatus for continuous recording of the venous pressure in man, the author applies the results of the method to the interpretation of many circulatory conditions. New conceptions are advanced. Some of these conceptions, such as those concerning a venous hypertonus (so-called active venous hypertension) are attractive, but few appear to be substantiated bv solid evidence. Bibliographic quotations are mostly limited to French and German papers of the last ten years. The style and the composition of the book are far from being clear.