Physico-mechanical experiments on various subjects : containing an account of several surprizing phaenomena touching light and electricity, producible on the attrition of bodies, With many other remarkable appearances, not before observ'd : Together with the explanations of all the machines, (the figures of which are curiously engrav'd on copper) and other apparatus us'd in making the experiments : To which is added, a supplement, containing several new experiments not in the former editions / by F. Hauksbee, F.R.S.