These four remained many years among the Indians, wandering from one tribe to another, always trying to hear of some Spanish settlement where they might meet friends. Sometimes the Indians were kind to them, but oftener they were treated very cruelly. Several times it happened that they were taken captive and held as slaves, and then their lives would have been most miserable, had it not been that the Indians grew to respect them because they knew so many things that they themselves were ignorant of. De Vaca and his companions really thought that they had the power of curing disease by making the sign of the cross, or repeating _pater nosters_, and, as in some cases the sick got well, the Indians grew to reverence the white men and hold them in great esteem. But De Vaca and his friends could not grow fond enough of the Indians to be willing to remain among them. Their thoughts were always with the land of their birth, and so they pushed on through the unknown country, living on roots and nuts and the fruit of the prickly pear, suffering from the cold and heat, from which they had no clothing to protect them, and always in danger of death from hostile Indians. In this way they travelled through forests and swamps, across prairies and deserts, over mountains and rivers, for six years, and at last their courage was rewarded. They came one day to the sea, and they found there a Spanish settlement. Their countrymen, who had come there for gold and emeralds, received them with great kindness, and listened with wonder to the story of their wanderings. De Vaca learned that they were now on the coast of the Gulf of California, and that they had travelled from Tampa Bay, through the country bordering on the Gulf of Mexico, and through Mexico itself to the sea coast on the other side, having passed over more territory in North America than any other travellers had yet done. De Vaca and his three friends returned to Spain as speedily as possible, where they were received as heroes of adventure, whose romantic story passed from place to place, and instead of discouraging others, only made them the more eager to visit those strange lands themselves, for every one felt sure that if he had been in De Vaca's place he would surely have discovered the gold and silver and precious stones that were supposed to be hidden away in the everglades of Florida, or in the mountains of Apalachen, or in the rivers and valleys of Mexico. CHAPTER XI. HERNANDO CORTEZ AND THE CONQUEST OF MEXICO.