Two snakes holding a book; surmounted by a crowned eagle. Engraving, 1702. https://www.rawpixel.com/image/13954479/two-snakes-holding-book-surmounted-crowned-eagle-engraving-1702Free Image from public domain licenseMiscellanea curiosa, sive, Ephemeridum medico-physicarum Germanicarum Academiae Naturae Curiosarum. https://www.rawpixel.com/image/13967338/image-hand-person-medicineFree Image from public domain licenseHygieia, Telesphorus and Aesculapius watch the presentation of exotic plants to a woman representing Knowledge , under the… https://www.rawpixel.com/image/14009144/image-cartoon-face-plantsFree Image from public domain licenseSamuel Grass. Line engraving by J. Tscherning after P. Sauerland. https://www.rawpixel.com/image/14014796/samuel-grass-line-engraving-tscherning-after-sauerlandFree Image from public domain licenseA palatial building representing the Academia Caesareo-Leopoldina Naturae Curiosorum, surmounted by a coat of arms; two… https://www.rawpixel.com/image/13975345/image-person-church-artFree Image from public domain license