Such were the expedients adopted by the Incas for the improvement of their territory; and, although imperfect, they must be allowed to show an acquaintance with the principles of agricultural science, that gives them some claim to the rank of a civilized people. Under their patient and discriminating culture, every inch of good soil was tasked to its greatest power of production; while the most unpromising spots were compelled to contribute something to the subsistence of the people. Everywhere the land teemed with evidence of agricultural wealth, from the smiling valleys along the coast to the terraced steeps of the sierra, which, rising into pyramids of verdure, glowed with all the splendors of tropical vegetation. The formation of the country was particularly favorable, as already remarked, to an infinite variety of products, not so much from its extent as from its various elevations, which, more remarkable, even, than those in Mexico, comprehend every degree of latitude from the equator to the polar regions. Yet, though the temperature changes in this region with the degree of elevation, it remains nearly the same in the same spots throughout the year; and the inhabitant feels none of those grateful vicissitudes of season which belong to the temperate latitudes of the globe. Thus, while the summer lies in full power on the burning regions of the palm and the cocoa-tree that fringe the borders of the ocean, the broad surface of the table land blooms with the freshness of perpetual spring, and the higher summits of the Cordilleras are white with everlasting winter. The Peruvians turned this fixed variety of climate, if I may so say, to the best account by cultivating the productions appropriate to each; and they particularly directed their attention to those which afforded the most nutriment to man. Thus, in the lower level were to be found the cassava-tree and the banana, that bountiful plant, which seems to have relieved man from the primeval curse - if it were not rather a blessing - of toiling for his sustenance. *27 As the banana faded from the landscape, a good substitute was found in the maize, the great agricultural staple of both the northern and southern divisions of the American continent; and which, after its exportation to the Old World, spread so rapidly there, as to suggest the idea of its being indigenous to it. *28 The Peruvians were well acquainted with the different modes of preparing this useful vegetable, though it seems they did not use it for bread, except at festivals; and they extracted a sort of honey from the stalk, and made an intoxicating liquor from the fermented grain, to which, like the Aztecs, they were immoderately addicted. *29