The myths of the peoples under the empire of the Incas in Peru are extremely interesting, because almost all mythical formations are found existing together, while we have historical evidence as to the order and manner of their development. The Peru of the Incas covered the modern state of the same name, and included Ecuador, with parts of Chili and Bolivia. M. Reville calculates that the empire was about 2500 miles in length, four times as long as France, and that its breadth was from 250 to 500 miles. The country, contained three different climatic regions, and was peopled by races of many different degrees of culture, all more or less subject to the dominion of the Children of the Sun. The three regions were the dry strip along the coast, the fertile and cultivated land about the spurs of the Cordilleras, and the inland mountain regions, inhabited by the wildest races. Near Cuzco, the Inca capital, was the Lake of Titicaca, the Mediterranean, as it were, of Peru, for on the shores of this inland sea was developed the chief civilisation of the new world. As to the institutions, myths and religion of the empire, we have copious if contradictory information. There are the narratives of the Spanish conquerors, especially of Pizarro's chaplain, Valverde, an ignorant bigoted fanatic. Then we have somewhat later travellers and missionaries, of whom Cieza de Leon (his book was published thirty years after the conquest, in 1553) is one of the most trustworthy. The "Royal Commentaries" of Garcilasso de la Vega, son of an Inca lady and a Spanish conqueror, have often already been quoted. The critical spirit and sound sense of Garcilasso are in remarkable contrast to the stupid orthodoxy of the Spaniards, but some allowance must be made for his fervent Peruvian patriotism. He had heard the Inca traditions repeated in boyhood, and very early in life collected all the information which his mother and maternal uncle had to give him, or which could be extracted from the quipus (the records of knotted cord), and from the commemorative pictures of his ancestors. Garcilasso had access, moreover, to the "torn papers" of Blas Valera, an early Spanish missionary of unusual sense and acuteness. Christoval de Moluna is also an excellent authority, and much may be learned from the volume of Rites and Laws of the Yncas.(1) (1) A more complete list of authorities, including the garrulous Acosta, is published by M. Reville in his Hibbert Lectures, pp. 136, 137. Garcilasso, Cieza de Leon, Christoval de Moluna, Acosta and the Rites and Laws have all been translated by Mr. Clements Markham, and are published, with the editor's learned and ingenious notes, in the collection of the Hakluyt Society. Care must be taken to discriminate between what is reported about the Indians of the various provinces, who were in very different grades of culture, and what is told about the Incas themselves.