One of La Salle's great difficulties was lack of money. So before leaving the great lakes he collected a quantity of furs. Then he sent back the Griffin and half his men, with orders to sell these furs, and return with supplies for the expedition as quickly as possible. With the rest of his men La Salle journeyed on to the head of Lake Michigan in canoes. It was no easy journey, for storms swept the lake. The waves tossed their frail canoes hither and thither so that they were often in danger of drowning. They were harassed, too, by unfriendly Indians. At length, worn out by fatigue, starving with cold and hunger, they reached the appointed place to await the return of the Griffin. But the Griffin never came. In vain La Salle scanned the grey waters. Day after day passed, and no white sail flecked the dreary expanse. The Griffin was never heard of more. With a heavy heart La Salle at length gave up the weary watch, and decided to go on with such men and supplies as he had. But with every step fresh difficulties arose. La Salle had many enemies, and they did their best to hinder and hamper him. His own men were discontented and mutinous. They had no love for their leader, no enthusiasm for the expedition, and the hardships and dangers of the way made them sullen. They were half starved and worn out with fatigue; all they wanted was to get back to a comfortable life. They were sick of the wilderness and its hardships. Added to this the Indians told them bloodcurdling tales of the terrors of the "Father of Waters." It was a raging torrent of whirlpools, they said, full of poisonous serpents and loathly monsters. Those who ventured on it would never return. This was more than the men could face. They chose rather the possibility of death among the Indians and the wilderness to its certainty among such horrors, and some of them ran away. Depressed by this desertion La Salle resolved to camp for the rest of the winter. So on the banks of the river Illinois he built a fort which he called Creve-Coeur, or Heart-break. But La Salle's brave heart was not yet broken. And here he began to build a new ship in which to sail down the Mississippi. There was wood in plenty around, and the work was begun. But many things, such as sails and rigging, which were necessary for the ship, the wilderness could not supply. And, seeing no other way, La Salle resolved to go back to Fort Frontenac to get them, leaving Tonty meanwhile to look after the building of the ship. It was March when La Salle set out on his tremendous walk of a thousand miles. With him he took a faithful Indians guide and four Frenchmen. And seldom have men endured a journey more terrible.