Charles François De Cisternay Du Fay (1698-1739) [Wikipedia] Two Kinds of Electrical Fluids: Glass (Vitreous) Electricity and Resin (Resinous) Electricity
1733	Charles François De Cisternay Du Fay A letter from Mons. Du Fay, F. R. S. and of the Royal Academy of Sciences at Paris, to His Grace Charles Duke of Richmond and Lenox, Concerning Electricity, Translated from the French by T. S. M D. Philosophical Transactions of the Royal Society of London, Volume 38, pp. 258-266 (1733). [DOI] [JSTOR]