Lavoisier. Apparatus for controlling oxygen under pressure. 18th C https://www.rawpixel.com/image/13981400/lavoisier-apparatus-for-controlling-oxygen-under-pressure-18thFree Image from public domain licenseBalance hydrostatic from Six Weeks Vacation by Paul Poire (1880). Original from the British Library. Digitally enhanced by… https://www.rawpixel.com/image/572601/scientific-apparatus-vintage-drawingFree Image from public domain license