The History of Rome, Book III. Theodor Mommsen

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The Barca family conclude the most important state treaties, and the ratification of the governing board is a formality (Pol. iii. 21). Rome enters her protest before them and before the senate (Pol. iii. 15). The position of the Barca family towards Carthage in many points resembles that of the Princes of Orange towards the States-General.

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It was not till the middle ages that the route by Mont Cenis became a military road. The eastern passes, such as that over the Poenine Alps or the Great St. Bernard—which, moreover, was only converted into a military road by Caesar and Augustus—are, of course, in this case out of the question.

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The much-discussed questions of topography, connected with this celebrated expedition, may be regarded as cleared up and substantially solved by the masterly investigations of Messrs. Wickham and Cramer. Respecting the chronological questions, which likewise present difficulties, a few remarks may be exceptionally allowed to have a place here.

When Hannibal reached the summit of the St. Bernard, "the peaks were already beginning to be thickly covered with snow" (Pol. iii. 54), snow lay on the route (Pol. iii. 55), perhaps for the most part snow not freshly fallen, but proceeding from the fall of avalanches. At the St. Bernard winter begins about Michaelmas, and the falling of snow in September; when the Englishmen already mentioned crossed the mountain at the end of August, they found almost no snow on their road, but the slopes on both sides were covered with it. Hannibal thus appears to have arrived at the pass in the beginning of September; which is quite compatible with the statement that he arrived there "when the winter was already approaching" —for —sunaptein ten tes pleiados dusin— (Pol. iii. 54) does not mean anything more than this, least of all, the day of the heliacal setting of the Pleiades (about 26th October); comp. Ideler, Chronol. i. 241.

If Hannibal reached Italy nine days later, and therefore about the middle of September, there is room for the events that occurred from that time up to the battle of the Trebia towards the end of December (—peri cheimerinas tropas—, Pol. iii. 72), and in particular for the transporting of the army destined for Africa from Lilybaeum to Placentia. This hypothesis further suits the statement that the day of departure was announced at an assembly of the army —upo ten earinen oran— (Pol. iii. 34), and therefore towards the end of March, and that the march lasted five (or, according to App. vii. 4, six) months. If Hannibal was thus at the St. Bernard in the beginning of September, he must have reached the Rhone at the beginning of August —for he spent thirty days in making his way from the Rhone thither —and in that case it is evident that Scipio, who embarked at the beginning of summer (Pol. iii. 41) and so at latest by the commencement of June, must have spent much time on the voyage or remained for a considerable period in singular inaction at Massilia.

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Polybius's account of the battle on the Trebia is quite clear. If Placentia lay on the right bank of the Trebia where it falls into the Po, and if the battle was fought on the left bank, while the Roman encampment was pitched upon the right—both of which points have been disputed, but are nevertheless indisputable—the Roman soldiers must certainly have passed the Trebia in order to gain Placentia as well as to gain the camp. But those who crossed to the camp must have made their way through the disorganized portions of their own army and through the corps of the enemy that had gone round to their rear, and must then have crossed the river almost in hand-to-hand combat with the enemy. On the other hand the passage near Placentia was accomplished after the pursuit had slackened; the corps was several miles distant from the field of battle, and had arrived within reach of a Roman fortress; it may even have been the case, although it cannot be proved, that a bridge led over the Trebia at that point, and that the -tete de pont- on the other bank was occupied by the garrison of Placentia. It is evident that the first passage was just as difficult as the second was easy, and therefore with good reason Polybius, military judge as he was, merely says of the corps of 10,000, that in close columns it cut its way to Placentia (iii. 74, 6), without mentioning the passage of the river which in this case was unattended with difficulty.

The erroneousness of the view of Livy, which transfers the Phoenician camp to the right, the Roman to the left bank of the Trebia, has lately been repeatedly pointed out. We may only further mention, that the site of Clastidium, near the modern Casteggio, has now been established by inscriptions (Orelli-Henzen, 5117).

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III. III. The Celts Attacked in Their Own Land

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The date of the battle, 23rd June according to the uncorrected calendar, must, according to the rectified calendar, fall somewhere in April, since Quintus Fabius resigned his dictatorship, after six months, in the middle of autumn (Lav. xxii. 31, 7; 32, i), and must therefore have entered upon it about the beginning of May. The confusion of the calendar (p. 117) in Rome was even at this period very great.

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The inscription of the gift devoted by the new dictator on account of his victory at Gerunium to Hercules Victor— -Hercolei sacrom M. Minuci(us) C. f. dictator vovit- —was found in the year 1862 at Rome, near S. Lorenzo.