Abraham De Moivre, a French mathematician, born at Vitry, Champagne, May 26, 1667, died in London, Nov. 27, 1754. Upon the revocation of the edict of Nantes he took refuge in England, and devoted himself to teaching mathematics. He soon became connected with Halley and Newton, was admitted into the royal society in 1697, was elected a member of the academy of sciences of Berlin in 1730, and of the academy of sciences of Paris in 1754. He was one of the committee appointed to decide on the rival claims of Leibnitz and Newton to the invention of the differential calculus. He made many discoveries and improvements in the theory of series and of probabilities, but is best known by the celebrated trigonometrical theorem which bears his name. He survived most of his early associates, and his subsistence latterly depended upon his solutions of problems relative to games of chance, which he was accustomed to give in a coffee house. Besides memoirs in the " Philosophical Transactions," he published "The Doctrine of Chances" (1718), "Annuities on Lives" (1724), and Miscellanea Analytica, de Serielus et Quadraturis (1730).