An astrologer wearing spectacles sits in his study reading by a globe. Line engraving by G.L. Heitel(?) after J.J. Vliet, 1634.

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An astrologer wearing spectacles sits in his study reading by a globe. Line engraving by G.L. Heitel(?) after J.J. Vliet, 1634. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.