William Harvey (1578-1657) English physician. Diagram from "De Motu Cordis", 1628. When tourniquet applied valves in veins B,C,D,E,F show. Vein at valve at OH fades when supply stopped at H, but distended at O,G. Circulation of the blood. E

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Keywords: 17th, century, engraving, health, medical, medicine, physics, physiology, scheme, veins