15. While these affairs were proceeding, Silvanus was living at Agrippina,[42] and having learnt by continual information sent to him by his friends what Apodemius was doing with the hope of effecting his ruin; and knowing also how impressible the mind of the feeble emperor was; began to fear lest in his absence, and without being convicted of any crime, he might still be treated as a criminal. And so, being placed in a situation of the greatest difficulty, he began to think of trusting himself to the good faith of the barbarians. 16. But being dissuaded from this by Laniogaisus, at that time a tribune, whom we have already spoken of as the only person who was present with Constans when he was dying, himself serving at that time as a volunteer; and being assured by Laniogaisus that the Franks, of whom he himself was a countryman, would put him to death, or else betray him for a bribe, he saw no safety anywhere in the present emergency, and so was driven to extreme counsels. And by degrees, having secretly conferred with the chiefs of the principal legions, and having excited them by the magnitude of promised rewards, he tore for use on this occasion the purple silk from the insignia of the dragons[43] and standards, and so assumed the title of emperor. 17. And while these events are passing in Gaul, one day, a little before sunset, an unexpected messenger arrived at Milan, relating fully that Silvanus, being ambitious to rise above his place as commander of the infantry, had tampered with the army, and assumed the imperial dignity. 18. Constantius, at this amazing and unexpected event, seemed as if struck by a thunderbolt of fate, and having at once summoned a council to meet at the second watch, all the nobles hastened to the palace. No one had either mind to conceive or tongue to recommend what was best to be done; but in suppressed tones they mentioned the name of Ursicinus as a man eminent for skill in affairs of war, and one who had been undeservedly exposed to most injurious treatment. He was immediately sent for by the principal chamberlain, which is the most honourable kind of summons, and as soon as he entered the council-chamber was offered the purple to salute much more graciously than at any former time. Diocletian was the first who introduced the custom of offering reverence to the emperor after this foreign manner and royal pretension; whereas all former princes, as we read, had been saluted like judges.