This road was upwards of fifteen hundred miles long; and stone pillars, to serve the purpose of mile-stones, were erected at intervals of about a league along the route. Its breadth was about twenty feet. In some places it was covered with heavy flagstones; and in others, with a bituminous cement, which time has rendered harder than the stone itself. Where the ravines had been filled with solid masonry, the mountain torrents have eaten a way beneath it, leaving the superincumbent mass still spanning the valley like an arch. The suspension-bridges--instead of which wretchedly inferior ones of wood are now used--were composed of the tough fibres of the maguey; a species of osier, possessing an extraordinary degree of tenacity and strength. The fibres were woven into cables of the thickness of a man's body, which were then stretched across the water, and conducted through rings or holes cut in immense buttresses of stone raised on the opposite banks of the river, and there secured to heavy pieces of timber. Several of these enormous cables bound together, side by side, formed a bridge--which, covered with planks well secured, and defended on each side by a railing of the same material, afforded a safe passage for the traveller. The length of this aerial bridge, sometimes exceeding 200 feet, caused it--confined as it was only at the extremities--to dip, with an alarming inclination towards the centre; while the motion given it by the passenger created an oscillation frightful to one whose eye glanced down into the dark abyss of waters, that foamed and tumbled many a fathom beneath. Over these roads a system of communication throughout the country was kept up by running postmen, called chasquis. Along the roads small buildings were erected, within five miles of each other, at which a number of chasquis were stationed. They were trained to the employment, and selected for their speed and fidelity. As the distance each had to perform was small, he ran over the ground with great swiftness, and messages were carried along all the routes at the rate of a hundred and fifty miles a day. The chasquis not only carried despatches, but brought fish from the distant ocean, and fruits, game, and other commodities, from the warm regions on the coast. It is not our province to describe the gorgeous temples, palaces, and convents, in which the Virgins of the Sun resided, and the numerous other public buildings, extensive remains of which still exist scattered throughout the region. The glory of the Incas has departed. But few of their descendants remain, and their blood has generally mingled with that of their conquerors. THE NATIVE INDIANS.