Blood pressure

Hales went from studying the flow of sap in plants to the flow of blood in animals, measuring rates of flow in different parts of the circulatory system. He wrote Hemostaticks in 1733.
 Stephen Hales England 1733 Blood pressure

Hales went from studying the flow of sap in plants to the flow of blood in animals, measuring rates of flow in different parts of the circulatory system. He wrote Hemostaticks in 1733.