ELECTRICITY, 



Electric Phenomena observed by the Ancients. Thales. Gilbert de Magnete. Otto Guerieke's 

 Electric Machine. Hawkesbee's Ex'iennis-i.-is. Stephen Grey's Discoveries on Electrics and 

 Non-Electrics. Wheeler and Grey'< dxocnments. Dufaye discovers the Resinous and Vitre- 

 ous Electricities. Invention of the Le /(=' t-iiial. Singular Effects of the first Electric Shocks. 

 Experiments of Watson and Bevis. Experiments on Conductors. Franklin's Experiments and 

 Letters. His Celebrated Theory of Positive and Negative Electricity. His Experiments ou the 

 LeycJen Phial. His Discovery of the Identity of Lightning and Electricity. Reception of his 

 Suggestions by the Royal Society. His Kite Experiment. His Right to this Discovery denied 

 by Arago. His Claim vindicated. Invention of Conductors. Death of Richmann. Beccaria's 

 Observations. Canton's Experiments. Discovery of Induction. Invention of the Condenser. 

 Works of .AJpinus. Theory of Symmer. Experiments of Coulomb. Balance of Torsion. 

 Electricity of the Atmosphere. Effects of Flame. Experiments of Volta. Lavoisier and La- 

 ( place. Analytical Work of Poissoa. 



