They struck at the staves of the sarissæ, but the cavalry in the rear embarrassed their attack; and the phalanx, supported by the elephants, lengthened and contracted, presenting itself in the form of a square, a cone, a rhombus, a trapezium, a pyramid. A twofold internal movement went on continually from its head to its rear; for those who were at the lowest part of the files hastened up to the first ranks, while the latter, from fatigue, or on account of the wounded, fell further back. The Barbarians found themselves thronged upon the phalanx. It was impossible for it to advance; there was, as it were, an ocean wherein leaped red crests and scales of brass, while the bright shields rolled like silver foam. Sometimes broad currents would descend from one extremity to the other, and then go up again, while a heavy mass remained motionless in the centre. The lances dipped and rose alternately. Elsewhere there was so quick a play of naked swords that only the points were visible, while turmæ of cavalry formed wide circles which closed again like whirlwinds behind them. Above the voices of the captains, the ringing of clarions and the grating of tyres, bullets of lead and almonds of clay whistled through the air, dashing the sword from the hand or the brain out of the skull. The wounded, sheltering themselves with one arm beneath their shields, pointed their swords by resting the pommels on the ground, while others, lying in pools of blood, would turn and bite the heels of those above them. The multitude was so compact, the dust so thick, and the tumult so great that it was impossible to distinguish anything; the cowards who offered to surrender were not even heard. Those whose hands were empty clasped one another close; breasts cracked against cuirasses, and corpses hung with head thrown back between a pair of contracted arms. There was a company of sixty Umbrians who, firm on their hams, their pikes before their eyes, immovable and grinding their teeth, forced two syntagmata to recoil simultaneously. Some Epirote shepherds ran upon the left squadron of the Clinabarians, and whirling their staves, seized the horses by the man; the animals threw their riders and fled across the plain. The Punic slingers scattered here and there stood gaping. The phalanx began to waver, the captains ran to and fro in distraction, the rearmost in the files were pressing upon the soldiers, and the Barbarians had re-formed; they were recovering; the victory was theirs.