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The Romans on a sudden perceived a vast cloud of dust,
which at first they conjectured to be raised by the wind sweep-
ing over an arid and sandy surface; for the country was covered
on all sides with copsewood, which           their view of the
Numidians: but observing the cloud to move with regularity, and
approach nearer and nearer as the Numidians marched forward,
they perceived the cause of the phenomenon; and flying to their
arms, drew up before the camp according to orders.