[178] An allusion to gladiatorial spectacles. This slaughter happened near the canal of Drusus, where the Roman guard on the Rhine could be spectators of the battle. The account of it came to Rome in the first year of Trajan. [179] As this treatise was written in the reign of Trajan, when the affairs of the Romans appeared unusually prosperous, some critics have imagined that Tacitus wrote _vigentibus_, "flourishing," instead of _urgentibus_, "urgent." But it is sufficiently evident, from other passages, that the causes which were operating gradually, but surely, to the destruction of the Roman empire, did not escape the penetration of Tacitus, even when disguised by the most flattering appearances. The common reading is therefore, probably, right.--_Aikin_. [180] These people first resided near the head of the Lippe; and then removed to the settlements of the Chamavi and Angrivarii, who had expelled the Bructeri. They appear to have been the same with those whom Velleius Paterculus, ii. 105, calls the Attuarii, and by that name they entered into the Francic league. Strabo calls them Chattuarii. [181] Namely, the Ansibarii and Tubantes. The Ansibarii or Amsibarii are thought by Alting to have derived their name from their neighborhood to the river Ems (Amisia); and the. Tubantes, from their frequent change of habitation, to have been called _Tho Benten_. or the wandering troops, and to have dwelt where now is Drente in Over-Issel. Among these nations, Furstenburg (Monum. Paderborn.) enumerates the Ambrones, borderers upon the river Ambrus, now Emmeren. [182] The Frieslanders. The lesser Frisii were settled on this side, the greater, on the other, of the Flevum (Zuyderzee). [183] In the time of the Romans this country was covered by vast meres, or lakes; which were made still larger by frequent inundations of the sea. Of these, one so late as 1530 overwhelmed seventy-two villages; and another, still more terrible, in 1569, laid under water great part of the sea-coast of Holland, and almost all Friesland, in which alone 20,000 persons were drowned. [184] Wherever the land seemed to terminate, and it appeared impossible to proceed further, maritime nations have feigned pillars of Hercules. Those celebrated by the Frisians must have been at the extremity of Friesland, and not in Sweden and the Cimmerian promontory, as Rudbeck supposes. [185] Drusus, the brother of Tiberius, and father of Germanicus, imposed a tribute on the Frisians, as mentioned in the Annals, iv. 72, and performed other eminent services in Germany; himself styled Germanicus.