1To Benjamin Franklin from John Canton, 31 October 1760 (Franklin Papers)
ALS : The Royal Society Having procur’d some thin Glass Balls of about an Inch and a half in Diameter, with Stems, or Tubes of eight or nine Inches in length, I electrified them, some positively on the inside, and others negatively, after the manner of charging the Leyden Bottle, and sealed them hermetically. Soon after, I applied the naked Balls to my Electrometer, and could not discover the...