Above, a man studying the entrails of a cadaver as the microcosm, with the macrocosm behind; below, Hippocrates, holding the staff of Aesculapius, and Galen; bottom, instruments for anatomy and surgery. Engraving by A. Santvoort, ca. 1650.

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Above, a man studying the entrails of a cadaver as the microcosm, with the macrocosm behind; below, Hippocrates, holding the staff of Aesculapius, and Galen; bottom, instruments for anatomy and surgery. Engraving by A. Santvoort, ca. 1650. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.