Page:Experimentsnotes00boyl.pdf/572

18 horter Dimenions. But the Conjecture it elf was much more eaie to be made than the Experiment requiite to examine it. For we found it no eaie matter to upend an Electric, great and vigorous enough, in uch a manner, that it might, whilt upended, be excited, and be o nicely poied, that o faint a force as that wherewith it attracts light bodies should be able to procure a Local Motion to the whole Body it elf. But after ome fruitles attempts with other Electricks, I had recoure to the very vigorous piece of polih'd Amber, formerly mention'd, and when we had with the help of a little Wax upended it by a ilken thread, we chafed very well one of the blunt edges of it upon a kind of large Pin-cuhion cover'd with a coure and black woollen tuff, and then brought the Electric, as oon as we could, to ettle notwithtanding its hanging freely at the bottom of the tring. This coure of rubbing on the edge of the Amber we pitch'd upon