A man being weighed on a set of scales, and a man with his head in a glass container; showing Lavoisier's experiments with… https://www.rawpixel.com/image/13976759/image-cartoon-person-artFree Image from public domain licenseLeft wing of a Memorial Triptych, formerly called the Gertz Memorial Triptych, with nine male Donor Portraits with Saint… https://www.rawpixel.com/image/13794915/image-face-frame-personFree Image from public domain licenseA man being weighed on a set of scales, and a man with his head in a glass container; showing Lavoisier's experiments with… https://www.rawpixel.com/image/13990249/image-cartoon-person-crossFree Image from public domain license