obvious effects and Phænomena of the vehement and tumultuous motion, which is able to throw up visibly into the air great store of Corpuscles, in the form of vapours or smoak. Thus in a heated Iron the vehement agitation of the parts may be easily inferr'd from the motion and hissing noise it imparts to drops of water or spittle that fall upon it. For it makes them hiss and boil, and quickly forces their particles to quit the form of a liquor, and flye into the air in the form of steams. And lastly, Fire, which is the hottest body we know, consists of parts so vehemently agitated, that they perpetually and swiftly flye abroad in swarms, and dissipate or shatter all the combustible bodies they meet with in their way; fire making so fierce a dissolution, and great a dispersion of its own fuel, that we may see whole piles of solid wood (weighing perhaps many hundred pounds) so dissipated in very few hours into flame and smoak, that of-tentimes
