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Blundell's Gravitator from The Lancet, June 13, 1829

This illustration accompanied James Blundell's article, "Observations on Transfusion of Blood" in The Lancet. It demonstrated how the "Gravitator" device should be positioned to deliver the donor's blood to the patient.

Courtesy National Library of Medicine

Funnel-like instrument connects left arm of woman lying in bed to right arm of man standing nearby.