A travelling showman in the Netherlands showing animalcules to children. Oil painting by a Dutch painter, ca. 1840. https://www.rawpixel.com/image/13980093/image-dog-cartoon-faceFree Image from public domain licenseInterior of a Dutch house with an operator attending to a man's teeth. Oil painting by Hendrik van der Burgh. https://www.rawpixel.com/image/13978991/image-dog-frame-plantFree Image from public domain licenseSalome with the Head of John the Baptist by Cornelis Engebrechtsz https://www.rawpixel.com/image/14264001/salome-with-the-head-john-the-baptist-cornelis-engebrechtszFree Image from public domain licenseA travelling showman in the Netherlands showing animalcules to children. Oil painting by a Dutch painter, ca. 1840. https://www.rawpixel.com/image/13959685/image-dog-person-artFree Image from public domain licenseA travelling showman in the Netherlands showing animalcules to children. Oil painting by a Dutch painter, ca. 1840. https://www.rawpixel.com/image/13969885/image-dog-person-artFree Image from public domain license