The Emperors Decius, Gallus, Æmilianus, Valerian, And Gallienus.—The General Irruption Of The Barbarians.—The Thirty Tyrants. From the great secular games celebrated by Philip, to the death of the emperor Gallienus, there elapsed twenty years of shame and misfortune. During that calamitous period, every instant of time was marked, every province of the Roman world was afflicted, by barbarous invaders, and military tyrants, and the ruined empire seemed to approach the last and fatal moment of its dissolution. The confusion of the times, and the scarcity of authentic memorials, oppose equal difficulties to the historian, who attempts to preserve a clear and unbroken thread of narration. Surrounded with imperfect fragments, always concise, often obscure, and sometimes contradictory, he is reduced to collect, to compare, and to conjecture: and though he ought never to place his conjectures in the rank of facts, yet the knowledge of human nature, and of the sure operation of its fierce and unrestrained passions, might, on some occasions, supply the want of historical materials. There is not, for instance, any difficulty in conceiving, that the successive murders of so many emperors had loosened all the ties of allegiance between the prince and people; that all the generals of Philip were disposed to imitate the example of their master; and that the caprice of armies, long since habituated to frequent and violent revolutions, might every day raise to the throne the most obscure of their fellow-soldiers. History can only add, that the rebellion against the emperor Philip broke out in the summer of the year two hundred and forty-nine, among the legions of Mæsia; and that a subaltern officer, named Marinus, was the object of their seditious choice. Philip was alarmed. He dreaded lest the treason of the Mæsian army should prove the first spark of a general conflagration. Distracted with the consciousness of his guilt and of his danger, he communicated the intelligence to the senate. A gloomy silence prevailed, the effect of fear, and perhaps of disaffection; till at length Decius, one of the assembly, assuming a spirit worthy of his noble extraction, ventured to discover more intrepidity than the emperor seemed to possess. He treated the whole business with contempt, as a hasty and inconsiderate tumult, and Philip’s rival as a phantom of royalty, who in a very few days would be destroyed by the same inconstancy that had created him. The speedy completion of the prophecy inspired Philip with a just esteem for so able a counsellor; and Decius appeared to him the only person capable of restoring peace and discipline to an army whose tumultuous spirit did not immediately subside after the