The Helvetii, meanwhile, had gone through the Pas de l'Ecluse, and were now among the Aedui, laying waste the country. It was early in the summer. The corn was green, the hay was still uncut, and the crops were being eaten off the ground. The Aedui threw themselves on the promised protection of Rome. Caesar crossed the Rhone above Lyons, and came up with the marauding hosts as they were leisurely passing in boats over the Saône. They had been twenty days upon the river, transporting their wagons and their families. Three quarters of them were on the other side. The Tigurini from Zurich, the most warlike of their tribes, were still on the left bank. The Tigurini had destroyed the army of Longinus, and on them the first retribution fell. Caesar cut them to pieces. A single day sufficed to throw a bridge over the Saône, and the Helvetii, who had looked for nothing less than to be pursued by six Roman legions, begged for peace. They were willing, they said, to go to any part of the country which Caesar would assign to them; and they reminded him that they might be dangerous if pushed to extremities. Caesar knew that they were dangerous. He had followed them because he knew it. He said that they must return the way that they had come. They must pay for the injuries which they had inflicted on the Aedui, and they must give him hostages for their obedience. The fierce mountaineers replied that they had been more used to demand hostages than to give them; and confident in their numbers, and in their secret allies among the Gauls, they marched on through the Aeduan territories up the level banks of the Saône, thence striking west toward Autun.