"An anatomical disquisition on the motion of the heart & blood in animals by Harvey" by William Harvey is a medical treatise first published in 1628. This landmark work established the groundbreaking concept that blood circulates throughout the body in a closed system. Harvey combined observations, experiments, and measurements to demonstrate how the heart pumps blood to the lungs and body, challenging centuries of medical understanding. His work introduced a revolutionary mechanistic view of the heart as a pump rather than a mystical organ. (This is an automatically generated summary.)