Res Gestae
Ammianus Marcellinus
Ammianus Marcellinus. Ammianus Marcellinus, with an English translation, Vols. I-III. Rolfe, John C., translator. Cambridge, MA; London: Harvard University Press; W. Heinemann, 1935-1940 (printing).
Publius Cornelius Scipio,
At the same time, having an eye to the common welfare, he advised his brother, Gnaeus Scipio, to proceed to Spain and hold off Hasdrubal, who was planning to burst forth in like manner from that quarter. But Hannibal learned of this from deserters, and being of a nimble and crafty wit, came, under the guidance of natives from among the Taurini, through the Tricasini and the extreme edge of the Vocontii to the passes of the Tricorii. Starting out from there, he made another road, where it hitherto had been impassable; he hewed out a cliff which rose to a vast height by burning it with flames of immense power and crumbling it by pouring on vinegar;[*](Cf. Livy, xxi. 37, 1–3; Juvenal, x. 153; etc. Pliny, N.H. xxiii. 57, attributes this power to vinegar, but Polybius does not mention the story, which is doubted for various reasons.) then he marched along the river Druentia, dangerous with its shifting eddies, and seized upon the district of Etruria. So much about the Alps; let us now turn to the rest of the country.
In early times, when these regions lay in darkness as savage, they are thought to have been threefold,[*](With this part of the account, cf. Caesar, B.G., i. 1.) divided into Celts (the same as the Gauls), the Aquitanians, and the Belgians, differing in language, habits and laws.
Now the Gauls (who are the Celts) are separated from the Aquitanians by the Garonne river, which rises in the hills of the Pyrenees, and after running past many towns disappears in the Ocean.
But from the Belgians this same nation is separated by the Marne and the Seine, rivers of identical size; they flow through the district of Lyons, and after encircling in the manner of an island a stronghold of the Parisii called Lutetia,[*](Paris.) they unite in one channel, and flowing on together pour into the sea not far from Castra Constantia.[*](The site of Harfleur.)