In consequence of a dispute at a ball, on the 20th of April, Mr. St. John and Count Catraffiana left Rome for the Neapolitan territory. On account of a supposed rudeness on the part of the Count towards Mr. St. John, the latter had pulled his nose publicly in the ball-room; the consequence of which proceeding was a formal challenge the next morning from the Count. The duel was first to have taken place at Rome; but the police, having got wind of it, had taken measures to prevent it. They accordingly left Rome on the 24th, and arrived on the following day at the Valla di Cicerone, near Mola di Gaita. Each of the combatants was attended by two seconds. They remained five minutes opposite to one another after the signal was given, each expecting the other to move forward. Mr. St. John then advanced a few paces, and fired with fatal precision; his ball entering the chest of his opponent. The Count, after being wounded, put his hand to his breast, walked forward nine paces, fired, and dropped down dead. The Count’s ball carried off a part of Mr. St. John’s ear, and penetrated his hat. The Count was a practised duellist, having wounded several antagonists on similar occasions. BETWEEN CAPTAIN WHITE AND COLONEL BELLAMY. November 21, 1835. A desperate duel was fought this day, at Washington, between Captain Everett White, brother of the delegate in Congress, and Colonel Bellamy, formerly president of the Legislative Council. These gentlemen were candidates for Jefferson’s county, and Captain White was returned. The duel, from the mode of conducting it, was evidently intended to have fatal results. They were stationed sixty yards apart, with four pistols, to advance and fire. Captain White advanced, and received three shots without injury, and then fired at the distance of fifteen paces. His first shot passed through Colonel Bellamy’s arm, the next through his body, and, in the act of advancing with the other two pistols, he received a mortal wound from Colonel Bellamy’s fourth pistol. BETWEEN BRIGADIER-GENERAL EVANS AND CAPTAIN DICKSON. April 8, 1836.