courts of Ravenna and Constantinople, for the recovery of that valuable province; and the ports of Sicily were already filled with the military and naval forces of Theodosius. But the subtle Genseric, who spread his negotiations round the world, prevented their designs, by exciting the king of the Huns to invade the Eastern empire; and a trifling incident soon became the motive, or pretence, of a destructive war. Under the faith of the treaty of Margus, a free market was held on the Northern side of the Danube, which was protected by a Roman fortress surnamed Constantia. A troop of Barbarians violated the commercial security; killed, or dispersed, the unsuspecting traders; and levelled the fortress with the ground. The Huns justified this outrage as an act of reprisal; alleged, that the bishop of Margus had entered their territories, to discover and steal a secret treasure of their kings; and sternly demanded the guilty prelate, the sacrilegious spoil, and the fugitive subjects, who had escaped from the justice of Attila. The refusal of the Byzantine court was the signal of war; and the Mæsians at first applauded the generous firmness of their sovereign. But they were soon intimidated by the destruction of Viminiacum and the adjacent towns; and the people was persuaded to adopt the convenient maxim, that a private citizen, however innocent or respectable, may be justly sacrificed to the safety of his country. The bishop of Margus, who did not possess the spirit of a martyr, resolved to prevent the designs which he suspected. He boldly treated with the princes of the Huns: secured, by solemn oaths, his pardon and reward; posted a numerous detachment of Barbarians, in silent ambush, on the banks of the Danube; and, at the appointed hour, opened, with his own hand, the gates of his episcopal city. This advantage, which had been obtained by treachery, served as a prelude to more honorable and decisive victories. The Illyrian frontier was covered by a line of castles and fortresses; and though the greatest part of them consisted only of a single tower, with a small garrison, they were commonly sufficient to repel, or to intercept, the inroads of an enemy, who was ignorant of the art, and impatient of the delay, of a regular siege. But these slight obstacles were instantly swept away by the inundation of the Huns. They destroyed, with fire and sword, the populous cities of Sirmium and Singidunum, of Ratiaria and Marcianopolis, of Naissus and Sardica; where every circumstance of the discipline of the people, and the construction of the buildings, had been gradually adapted to the sole purpose of defence. The whole breadth of Europe, as it extends above five hundred miles from the Euxine to the Hadriatic, was at once invaded, and occupied, and desolated, by the myriads of Barbarians whom Attila led into the field. The public danger and distress could not, however, provoke Theodosius to interrupt his amusements and devotion, or to appear in person at the head of the Roman legions. But the troops, which had been sent against Genseric, were hastily recalled from Sicily; the garrisons, on the side of Persia, were exhausted; and a military force was collected in Europe, formidable by their arms and numbers, if the generals had understood the science of command, and the soldiers the duty of obedience. The armies of the Eastern empire were vanquished in three successive engagements; and the progress of Attila may be traced by the fields of battle. The two former, on the banks of the Utus, and under the walls of Marcianopolis, were fought in the extensive plains between the Danube and Mount Hæmus. As the Romans were pressed by a victorious enemy, they gradually, and unskilfully, retired towards the Chersonesus of Thrace; and that narrow peninsula, the last extremity of the land, was marked by their third, and irreparable, defeat. By the destruction of this army, Attila acquired the indisputable possession of the field. From the Hellespont to Thermopylæ, and the suburbs of Constantinople, he ravaged, without resistance, and without mercy, the provinces of Thrace and Macedonia. Heraclea and Hadrianople might, perhaps, escape this dreadful irruption of the Huns; but the words, the most expressive of total extirpation and erasure, are applied to the calamities which they inflicted on seventy cities of the Eastern empire. Theodosius, his court, and the unwarlike people, were protected by the walls of Constantinople; but those walls had been shaken by a recent earthquake, and the fall of fifty-eight towers had opened a large and tremendous breach. The damage indeed was speedily repaired; but this accident was aggravated by a superstitious fear, that Heaven itself had delivered the Imperial city to the shepherds of Scythia, who were strangers to the laws, the language, and the religion, of the Romans.

In all their invasions of the civilized empires of the South, the Scythian shepherds have been uniformly actuated by a savage and destructive spirit. The laws of war, that restrain the exercise of national rapine and murder, are founded on two principles of substantial interest: the knowledge of the permanent benefits which may be obtained by a moderate use of conquest; and a just apprehension, lest the desolation which we inflict on the enemy's country may be retaliated on our own. But these considerations of hope