DU PONT SMOKELESS POWDER, a hard-grained porous composed of nitro cellulose of medium nitration which has been formed into grains by suspending the nitro cellulose in an aqueous solution of barium and potassium nitrates to which amyl acetate is added, stirring the gelatinized material in the fluid until the grains are formed and hardening them by steam until the amyl acetate is expelled. A certain amount of vaseline is incorporated during the drying process in the dense powders and thme powders an practically proof against atmospheric moisture. The grains may be sepa rated by sifting into the various desired sizes and colored to meet any taste by the addition of a very small amount of an organic coloring matter. The Du Pont smokeless powders are offered in many kinds under four general classi fications: (1) for high power rifles; (2) for black-powder rifles. which have been adapted for smokeless powder; (3) for revolvers and automatic pistols at midrange and (4) for the same weapons at short range. See EXPLOSIVES; POWEIRR.
DUPONT, Jacques Charles, sur named De l'Eure, French statesman : b. Neu bourg, Eure, Normandy, 27 Feb. 1767; d. Rouge Pierre, Normandy, 3 March 1855. In 1789 he was an advocate at the parlement of Normandy. During the republic and the empire he filled successively judicial offices at Louviers, Rouen and Evreux. He had adopted the principles of
the Revolution and in 1798 he was a member of the Council of the Five Hundred, which was dispersed by Murat on the 18th Brumaire. In 1811 he was nominated president of the Court of Justice at Rouen and in 1813 vice-president of the Corps Legislatif. During the Hundred Days he was vice-president of the Chamber of Deputies and when the allied armies entered Paris he drew up the declaration in which the chamber asserted the necessity of maintaining the principles of government that had been es tablished at the Revolution. He was one of the commissioners chosen to negotiate with the allied sovereigns. On the restoration of the Bourbons, Dupont signalized himself as a leader of the opposition. In 1830, after the revolution of July, he was made Minister of Justice, and after the fall of Louis Philippe became a mem ber of the provisional government. In 1849 he failed to secure his
to the chamber and retired into private life and on the accession of Napoleon III, in 1852, he ceased to take part in public affairs. His consistent firmness in the cause of constitutional liberalism during the many changes of his times gained him the esteem of his countrymen, by whom he was styled '