The Periodic And Irregular Variations In The Venous Blood-Flow is a book written by Burton-Opitz and Russell in 1904. The book explores the periodic and irregular variations in the flow of venous blood in the human body. The authors delve into the physiology of the venous system, examining the factors that contribute to changes in blood flow, such as respiration and muscular activity. They also discuss the tools and methods used to measure venous...