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 cassavatree 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 The temperate climate of the table-land furnished them with the maguey, agave Americana, many of the extraordinary qualities of which they comprehended, though not its most important one of affording a material for paper. Tobacco, too, was among the products of this elevated region. Yet the Peruvians differed from every other Indian nation to whom it was known, by using it only for medicinal purposes, in the form of snuff.30 They may have found a substitute for its narcotic qualities in the coco (Erythroxylum Peruvianurn), or cuca, as called by the natives. This is a shrub which grows to the height of a man. The leaves when gathered are dried in the sun, and, being mixed with a little lime, form a preparation for chewing, much like the betel-leaf of the East.31 With a small supply of this cuca in his pouch, and a handful of roasted maize, the Peruvian Indian of our time performs his wearisome journeys, day ,after day, without fatigue, or, at least, without complaint. Even food the most invigorating is less grateful to him than his loved narcotic. Under the Incas, it is said to have been exclusively reserved for the noble orders. If so, the people gained one luxury by the Conquest; and, after that period, it was so extensively used by them, that this article constituted a most important item of the colonial revenue of Spain.32 Yet, with the soothing charms of an opiate, this weed so much vaunted by the natives, when used to excess, is said to be attended with all the mischievous effects of habitual intoxication.33