The Peruvians had knowledge of one or two constellations, and watched the motions of the planet Venus, to which, as we have seen, they dedicated altars. But their ignorance of the first principles of astronomical science is shown by their ideas of eclipses, which, they supposed, denoted some great derangement of the planet; and when the moon labored under one of these mysterious infirmities, they sounded their instruments, and filled the air with shouts and lamentations, to rouse her from her lethargy. Such puerile conceits as these form a striking contrast with the real knowledge of the Mexicans, as displayed in their hieroglyphical maps, in which the true cause of this phenomenon is plainly depicted. *17 [Footnote 17: See Codex Tel-Remensis, Part 4, Pl. 22, ap. Antiquities of Mexico, vol. I. London, 1829.] But, if less successful in exploring the heavens, the Incas must be admitted to have surpassed every other American race in their dominion over the earth. Husbandry was pursued by them on principles that may be truly called scientific. It was the basis of their political institutions. Having no foreign commerce, it was agriculture that furnished them with the means of their internal exchanges, their subsistence, and their revenues. We have seen their remarkable provisions for distributing the land in equal shares among the people, while they required every man, except the privileged orders, to assist in its cultivation. The Inca himself did not disdain to set the example. On one of the great annual festivals, he proceeded to the environs of Cuzco, attended by his Court, and, in the presence of all the people, turned up the earth with a golden plough, - or an instrument that served as such, - thus consecrating the occupation of the husbandman as one worthy to be followed by the Children of the Sun. *18 [Footnote 18: Sarmiento, Relacion, Ms., cap. 16. The nobles, also, it seems, at this high festival, imitated the example of their master. "Pasadas todas las fiestas, en la ultima llevavan muchos arados de manos, los quales antiguamente heran de oro; i echos los oficios, tomava el Inga an arado i comenzava con el a romper la tierra, i lo mismo los demas senores, para que de alli adelante en todo su senorio hiciesen lo mismo, i sin que el Inga hiciese esto no avia Indio que osase romper la tierra, ni pensavan que produjese si el Inga no la rompia primero i esto vaste quanto a las fiestas.' Conq. i. Pob. del Piru, Ms.]