[Footnote 20: See, among others, the Memoirs, above cited, of Gen. Miller, which contain a minute and very interesting notice of modern Cuzco. (Vol. II. p. 223, et seq.) Ulloa, who visited the country in the middle of the last century, is unbounded in his expressions of admiration. Voyage to South America, Eng. trans., (London, 1806,) book VII. ch. 12.] [Footnote 21: Betanzos, Suma y Narracion de los Yngas, Ms., cap. 12. - Garcilasso, Com Real., Parte 1, iib. 7, cap. 27-29. The demolition of the fortress, begun immediately after the Conquest, provoked the remonstrance of more than one enlightened Spaniard, whose voice, however, was impotent against the spirit of cupidity and violence. See Sarmiento, Relacion, Ms., cap. 48.] The fortress, the walls, and the galleries were all built of stone, the heavy blocks of which were not laid in regular courses, but so disposed that the small ones might fill up the interstices between the great. They formed a sort of rustic work, being rough-hewn except towards the edges, which were finely wrought; and, though no cement was used, the several blocks were adjusted with so much exactness and united so closely, that it was impossible to introduce even the blade of knife between them. *22 Many of these stones were of vast size; some of them being full thirty-eight feet long, by eighteen broad, and six feet thick. *23 [Footnote 22: Ibid., ubi supra. - Inscripciones, Medallas, Templos, Edificios, Antiguedades, y Monumentos del Peru, Ms. This manuscript, which formerly belonged to Dr. Robertson, and which is now in the British Museum, is the work of some unknown author, somewhere probably about the time of Charles III.; a period when, as the sagacious scholar to whom I am indebted for a copy of it remarks, a spirit of sounder criticism was visible in the Castilian historians.] [Footnote 23: Acosta, Naturall and Morall Historie of the East and West Indies, Eng. trans., (London, 1604,) lib. 6, cap. 14. - He measured the stones himself. - See also Garcilasso, Com. Real., loc. cit.]