Image: Watt apparatus 2
Description: Scientific paper with diagrams.
Title: Watt apparatus 2
Credit: "Considerations on the medicinal use and on the production of factitious airs; Part I, by Thomas Beddoes, M.D., Part II, by James Watt, engineer; 2nd ed., Bristol, Bulgin & Rosser, for J. Johnson (London), 1795"
Author: Thomas Beddoes and James Watt
Permission: Out of copyright, so none required
Usage Terms: Public domain
License: Public domain
Attribution Required?: No