As to the historical value of the book, it stands in much the same category as the _Conquest of Mexico_. All that relates to the actual history of the Conquest is told with the same accurate regard for the original authorities which Prescott always showed, and for this part of the narrative, the original authorities are worthy of credence. The preliminary chapters on Peruvian antiquities are less satisfactory even than the corresponding portions of the other book. Prescott found them very hard to write. He was conscious that the subject was a formidable one. He did the best he could and all that any one could possibly have done at the time in which he wrote. Even now, after the elaborate explorations and researches of Bandelier, Markham, Baessler, Cunow, and others, the social and political relations of the Peruvians are little understood. Much has been learned of their art and of the monuments which they have left behind; but of their institutional history the records still remain obscure. The modern student, however, discovers many indications that they, too, like the Aztecs, were of the Red Race, and that their government was based upon the clan system; so that even the Inca himself, like the Mexican war-chief, was merely the elected executive of a council of the gentes. Here, as in Mexico, the Spaniards carelessly described in terms of Europe the institutions which they found, and made no serious attempt to understand them. Even the account of the Peruvian religion which Prescott gives, in accordance with the statements of the early Catholic missionaries, needs considerable modification.[50] The Spanish chroniclers whom Prescott followed describe the Peruvians as united under a great monarchy,--an "empire,"--the head of which, the Inca, was an hereditary and absolute ruler, whose person was sacred in that he was divine and the sole giver of law. The system was, therefore, a theocratic one, with the chief priest appointed by the Inca. There was a nobility, but the great offices of state were filled by the members of the imperial family. The rule of the Inca extended over a vast territory, and of it he was the supreme lord, having his wives from among the Virgins of the Sun, the fifteen hundred beautiful maidens who abode in the Palace of the Sun in Cuzco. Over the wonderful system of roads which intersected the empire, the couriers of the Inca passed back and forth with the commands of their master, to which all gave heed. The Peruvian religion was strongly monotheistic in that it recognised the unity, and preëminence of a supreme deity.