The next opens in the passes of the Alps, whither, by various routes, of seven or eight hundred miles in extent, these men had threaded their way in manifold disguises, through the very midst of the emperor's camps. According to this man's gigantic enterprise, in which the means were as audacious as the purpose, the conspirators were to rendezvous, and first to recognize each other, at the gates of Rome. From the Danube to the Tiber did this band of robbers severally pursue their perilous routes through all the difficulties of the road and the jealousies of the military stations, sustained by the mere thirst of vengeance--vengeance against that mighty foe whom they knew only by his proclamations against themselves. Everything continued to prosper; the conspirators met under the walls of Rome; the final details were arranged; and those also would have prospered but for a trifling accident. The season was one of general carnival at Rome; and, by the help of those disguises which the license of this festival time allowed, the murderers were to have penetrated as maskers to the emperor's retirement, when a casual word or two awoke the suspicions of a sentinel. One of the conspirators was arrested; under the terror and uncertainty of the moment, he made much ampler discoveries than were expected of him; the other accomplices were secured: and Commodus was delivered from the uplifted daggers of those who had sought him by months of patient wanderings, pursued through all the depths of the Illyrian forests, and the difficulties of the Alpine passes. It is not easy to find words of admiration commensurate to the energetic hardihood of a slave--who, by way of answer and reprisal to an edict summarily consigning him to persecution and death, determines to cross Europe in quest of its author, though no less a person than the master of the world--to seek him out in the inmost recesses of his capital city, of his private palace, of his consecrated bed-chamber--and there to lodge a dagger in his heart, as the adequate reply to the imperial sentence of proscription against himself.