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Early References to the Circulation of the Blood
Dr. N. Mariscal recently lectured before the Academia Nacional de Medicina of Madrid on the history of medical discoveries, with especial reference to the share of the Spanish medical profession in the discovery of the circulation of the blood. The speaker made the following statements: In "De Trinitatis erroribus," the first book of Michael Servetus (Miguel Servede), which was published in Basel in 1531, there appears a description of the circulation. "Christianismi restitutio," written by the same author and published in 1553, is a compilation of his previous books. There is a popular belief that the books of Servetus were destroyed, only two copies of "Christianismi restitutio" being saved, one of which is in Vienna and the other, partly burned, in Paris. These are not the facts, however, since the Biblioteca Nacional of Madrid obtained from a Quaker several copies of his
MADRID. JAMA. 1931;97(24):1814-1815. doi:10.1001/jama.1931.02730240064027