[293] De Bello Gallico, III. 27.
[294] Pliny, Hist. Nat., III. x. 6.
[295] Dio Cassius, XXXIX. 44.
[296] Cæsar never entirely subjugated the north-west of Gaul. (See Sallust, cited by Ammianus Marcellinus, XV., 15.) Still, under the reign of Augustus, in 724 and 726, there were triumphs over the Morini.
[297] De Bello Gallico, III. 29.
[298] “In praetura, in consulatu præfectum fabrum detulit.” (Cicero, Orat. pro Balbo, 28.)
[299] Mamurra, a Roman knight, born at Formiæ. (Pliny, Hist. Nat., XXXVI. 7.)
[300] From Xanten to Nimeguen, for a length of fifty kilomètres, extends a line of heights which form a barrier along the left bank of the Rhine. All appearances would lead us to believe that the river flowed, in Cæsar’s time, close at the foot of these heights; but now it has removed from them, and at Emmerich, for instance, is at a distance of eight kilomètres. This chain, the eastern slope of which is scarped, presents only two passes; one by a large opening at Xanten itself, to the north of the mountain called the Furstenberg; the other by a gorge of easy access, opening at Qualburg, near Cleves. These two passes were so well defined as the entries to Gaul in these regions, that, after the conquest, the Romans closed them by fortifying the Furstenberg (Castra vetera), and founding, on the two islands formed by the Rhine opposite these entries, Colonia Trajana, now Xanten, and Quadriburgium, now Qualburg. The existence of these isles facilitated at that time the passage of the Rhine, and, in all probability, it was opposite these two localities just named that the Usipetes and Tencteri crossed the river to penetrate into Gaul.
[301] The account of this campaign is very obscure in the “Commentaries.” Florus and Dio Cassius add to the obscurities: the first, by placing the scene of the defeat of the Usipetes and Tencteri towards the confluence of the Moselle and the Rhine; the second, by writing that Cæsar came up with the Germans in the country of the Treviri. Several authors have given to the account of these two historians more credit than to that of Cæsar himself, and they give of this campaign an explanation quite different from ours. General de Gœler, among others, supposes that the whole emigration of the Germans had advanced as far as the country of the Condrusi, where Cæsar came up with them, and that he had driven them from west to east, into the angle formed by the Moselle and the Rhine. From researches which were kindly undertaken by M. de Cohausen, major in the Prussian army, and which have given the same result as those of MM. Stoffel and De Locqueyssie, we consider this explanation of the campaign as inadmissible. It would be enough, to justify this assertion, to consider that the country situated between the Meuse and the Rhine, to the south of Aix-la-Chapelle, is too much broken and too barren to have allowed the German emigration, composed of 430,000 individuals, men, women, and children, with wagons, to move and subsist in it. Moreover, it contains no trace of ancient roads; and if Cæsar had taken this direction, he must necessarily have crossed the forest of the Ardennes, a circumstance of which he would not have failed to inform us. Besides, is it not more probable that, on the news of the approach of Cæsar, instead of directing their march towards the Ubii, who were not favourable to them, the Germans, at first spread over a vast territory, would have concentrated themselves towards the most distant part of the fertile country on which they had seized—that of the Menapii?
[302] The Ambivariti were established on the left bank of the Meuse, to the west of Ruremonde, and to the south of the marshes of Peel.