ExhibitionBoundary Crossing / 1818
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2. Diagram of Blundell’s Gravitator from The Lancet, 1829
Diagram of Blundell’s Gravitator from The Lancet, June 13, 1829
Courtesy National Library of Medicine
The “gravitator” could be used to transfer blood in a “regulated stream” from one individual to another. James Blundell, who believed that blood had the power to restore life itself, invented the device.