In the course of this introductory chapter, we have confined ourselves to the general outlines of the manners of Germany, without attempting to describe or to distinguish the various tribes which filled that great country in the time of Cæsar, of Tacitus, or of Ptolemy. As the ancient, or as new tribes successively present themselves in the series of this history, we shall concisely mention their origin, their situation, and their particular character. Modern nations are fixed and permanent societies, connected among themselves by laws and government, bound to their native soil by art and agriculture. The German tribes were voluntary and fluctuating associations of soldiers, almost of savages. The same territory often changed its inhabitants in the tide of conquest and emigration. The same communities, uniting in a plan of defence or invasion, bestowed a new title on their new confederacy. The dissolution of an ancient confederacy restored to the independent tribes their peculiar but long-forgotten appellation. A victorious state often communicated its own name to a vanquished people. Sometimes crowds of volunteers flocked from all parts to the standard of a favorite leader; his camp became their country, and some circumstance of the enterprise soon gave a common denomination to the mixed multitude. The distinctions of the ferocious invaders were perpetually varied by themselves, and confounded by the astonished subjects of the Roman empire. Wars, and the administration of public affairs, are the principal subjects of history; but the number of persons interested in these busy scenes is very different, according to the different condition of mankind. In great monarchies, millions of obedient subjects pursue their useful occupations in peace and obscurity. The attention of the writer, as well as of the reader, is solely confined to a court, a capital, a regular army, and the districts which happen to be the occasional scene of military operations. But a state of freedom and barbarism, the season of civil commotions, or the situation of petty republics, raises almost every member of the community into action, and consequently into notice. The irregular divisions, and the restless motions, of the people of Germany, dazzle our imagination, and seem to multiply their numbers. The profuse enumeration of kings, of warriors, of armies and nations, inclines us to forget that the same objects are continually repeated under a variety of appellations, and that the most splendid appellations have been frequently lavished on the most inconsiderable objects. Chapter X: Emperors Decius, Gallus, Æmilianus, Valerian And Gallienus.—Part I.