A curious yet thrilling sight must have been that motley caravan of prodigious proportions--ten thousand carts drawn by forty thousand oxen, carrying women, children, and the old men; riders and armour-bearers alongside, toiling painfully through woods and fords, and up and down rugged hills; behind the emigrants the smoking and smouldering ruins of the homes they were leaving with but little regret. Yet they were no mere adventurers, but looked forward with swelling hearts to a brighter time and a more prosperous home. Arriving at Geneva they found the bridge over the Rhone broken up by Cæsar's order. Cæsar was, in truth, a factor they had not reckoned upon, and, after useless attempts to make headway, they turned their steps towards Mount Jura, and whilst they were toiling over the steep and rugged Pas de l'Ecluse, Cæsar returned to Italy to gather together his legions. Returning to Gaul he arrived just in time to see the Helvetians cross the Arar (Saône) with the utmost difficulty. The Tigurini were the last to cross. And on them Cæsar fell and cut them down, thus avenging the death of Piso--the great-grandfather of Cæsar's wife--and wiping out the stain on the honour of the Roman arms. His legions crossed the Saône in twenty-four hours, and this performance so excited the admiration of the Helvetians, who had themselves taken twenty days to cross, that they condescended to send legates to treat with Cæsar for a free passage. They promised him that they would do no harm to any one if he would comply with the request, but threatened that if he should intercept them he might have to see something of their ancient bravery. No threats or entreaties were of avail, however, with such a man as Cæsar, who, smiling at their naïve simplicity, asked them to gives hostages as a sign of confirmation of their promise. "Hostages!" cried Divico, the hero of of Agen, in a rage, "the Helvetians are not accustomed to give hostages; they have been taught by their fathers to receive hostages, and this the Romans must well remember." So saying he walked away.