He attempted, however, to prevent, or at least to protract, his ruin. He implored the venal faith of the Prætorians, filled the city with unavailing preparations for war, drew lines round the suburbs, and even strengthened the fortifications of the palace; as if those last intrenchments could be defended, without hope of relief, against a victorious invader. Fear and shame prevented the guards from deserting his standard; but they trembled at the name of the Pannonian legions, commanded by an experienced general, and accustomed to vanquish the barbarians on the frozen Danube. They quitted, with a sigh, the pleasures of the baths and theatres, to put on arms, whose use they had almost forgotten, and beneath the weight of which they were oppressed. The unpractised elephants, whose uncouth appearance, it was hoped, would strike terror into the army of the north, threw their unskilful riders; and the awkward evolutions of the marines, drawn from the fleet of Misenum, were an object of ridicule to the populace; whilst the senate enjoyed, with secret pleasure, the distress and weakness of the usurper. Every motion of Julian betrayed his trembling perplexity. He insisted that Severus should be declared a public enemy by the senate. He entreated that the Pannonian general might be associated to the empire. He sent public ambassadors of consular rank to negotiate with his rival; he despatched private assassins to take away his life. He designed that the Vestal virgins, and all the colleges of priests, in their sacerdotal habits, and bearing before them the sacred pledges of the Roman religion, should advance in solemn procession to meet the Pannonian legions; and, at the same time, he vainly tried to interrogate, or to appease, the fates, by magic ceremonies and unlawful sacrifices. Chapter V: Sale Of The Empire To Didius Julianus.—Part II.