Page:Experimentsnotes00boyl.pdf/573

Rh upon for more than one reaon; for if we had chafed the flat ide, the Amber could not have approached the body it had been rub'd on without making a change of place in the whole Electric, and, which is wore, without making it move (contrary to the nature of heavy bodies) omewhat upwards; whereas the Amber having, by reaon of its upenion, its parts counterpoied by one another; to make the excited edge approach to another body, that edge needed not at all acend, but onely be moved horizontally, to which way of moving the gravity of the Electric (which the tring kept from moving downwards) could be but little or no hinderance. And agreeably to this we found, that if, as oon as the upended and well rubb'd Electric was brought to ettle freely, we applied to the chafed edge, but without touching it, the lately mention'd Cuhion, which, by reaon of its rough Superficies and poroity, was fit for the Electrical Efflu-