[RV]. Translation.—“The road of the Sierras is wonderful to behold; for truly, throughout all Christendom, there are not to be seen such beautiful roads on such rugged ground, and, for the most part they are paved.”

[RW]. See Vues des Cordillères et Monumens des peuples indigènes de l’Amérique, ed. in 8vo. t. ii. pp. 220–267.

[RX]. Joaquin Acosta, Compendio historico del Descubrimiento de la Nueva Granada, 1848, pp. 188, 196, 206, and 208; Bulletin de la Société de Géographie de Paris, 1847, p. 114.

[RY]. Journal of a Residence in Columbia, 1825, vol. ii. p. 390.

[RZ]. Historical Researches on the Conquest of Peru, 1827, p. 397.

[SA]. Prescott’s Conquest of Peru, vol. i. p. 332.

[SB]. See Garcilaso, lib. viii. cap. 2; also Joaquin Acosta, p. 189.

[SC]. See Humboldt, Recueil des Observ. Astron. vol. ii. pp. 309–359.

[SD]. Journal du Voyage fait à l’Equateur, 1751, p. 186.

[SE]. Pingré, Cométographie, t. i. p. 496; and Galle’s Verzeichniss aller bisher berechneten Cometenbahnen, in Olbers’ Easiest method of calculating the course of a Comet, 1847, p. 206.