ed
from the valley of the Po, to address the army through an interpreter,
meanwhile continued his march to the passes of the Alps without
obstruction. Which of these passes he should choose, could not be
at once determined either by the shortness of the route or by the
disposition of the inhabitants, although he had no time to lose
either in circuitous routes or in combat. He had necessarily to
select a route which should be practicable for his baggage, his
numerous cavalry, and his elephants, and in which an army could
procure sufficient means of subsistence either by friendship or by
force; for, although Hannibal had made preparations to convey
provisions after him on beasts of burden, these could only meet for
a few days the wants of an army which still, notwithstanding its great
losses, amounted to nearly 50,000 men. Leaving out of view the coast
route, which Hannibal abstained from taking not because the Romans
barred it, but because it would have led him away from his
destination, there were only two routes of note leading across the
Alps from Gaul to Italy in ancient times:(3) the pass of the Cottian
Alps (Mont Genevre) leading into the territory of the Taurini (by Susa
or Fenestrelles to Turin), and that of the Graian Alps (the Little St.
Bernard) leading into the territory of the Salassi (to Aosta and
Ivrea). The former route is the shorter; but, after leaving the
valley of the Rhone, it passes by the impracticable and unfruitful
river-valleys of the Drac, the Romanche, and the upper Durance,
through a difficult and poor mountain country, and requires at least
a seven or eight days' mountain march. A military road was first
constructed there by Pompeius, to furnish a shorter communication
between the provinces of Cisalpine and Transalpine Gaul.

The route by the Little St. Bernard is somewhat longer; but after
crossing the first Alpine wall that forms the eastern boundary of
the Rhone valley, it keeps by the valley of the upper Isere, which
stretches from Grenoble by way of Chambery up to the very foot of the
Little St. Bernard or, in other words, of the chain of the higher
Alps, and is the broadest, most fertile and most populous of all the
Alpine valleys. Moreover, the pass of the Little St. Bernard, while
not the lowest of all the natural passes of the Alps, is by far the
easiest; although no artificial road was constructed there, an
Austrian corps with artillery crossed the Alps by that route in 181