Far away in unknown realms, beyond the eastern boundary of Russia, where the gloomy waves of the Irtish, the Tobol, the Oural and the Volga flow through vast deserts, washing the base of fir-clad mountains, and murmuring through wildernesses, the native domain of wolves and bears, there were wandering innumerable tribes, fierce, cruel and barbarous, who held the frontiers of Russia in continual terror. They were called by the general name of Petchenegues. Igor was compelled to be constantly on the alert to defend his vast frontier from the irruptions of these merciless savages. This incessant warfare led to the organization of a very efficient military power, but there was no glory to be acquired in merely driving back to their dens these wild assailants. Weary of the conflict, he at last consented to purchase a peace with them; and then, seeking the military renown which Oleg had so signally acquired, he resolved to imitate his example and make a descent upon Constantinople. The annals of those days, which seem to be credible, state that he floated down the Dnieper with ten thousand barges, and spread his sails upon the waves of the Euxine. Entering the Bosporus, he landed on both shores of that beautiful strait, and, with the most wanton barbarity, ravaged the country far and near, massacring the inhabitants, pillaging the towns and committing all the buildings to the flames. There chanced to be at Constantinople, a very energetic Roman general, who was dispatched against them with a Greek fleet and a numerous land force. The Greeks in civilization were far in advance of the Russians. The land force drove the Russians to their boats, and then the Grecian fleet bore down upon them. A new instrument of destruction had been invented, the terrible Greek fire. Attached to arrows and javelins, and in great balls glowing with intensity of flame which water would not quench, it was thrown into the boats of the Russians, enkindling conflagration and exciting terror indescribable. It seemed to the superstitious followers of Igor, that they were assailed by foes hurling the lightnings of Jove. In this fierce conflict Igor, having lost a large number of barges, and many of his men, drew off his remaining forces in disorder, and they slowly returned to their country in disgrace, emaciate and starving. Many of the Russians taken captive by the Greeks were put to death with the most horrible barbarities.