Opposite to the island of Puna on the main land, there dwelt a nation or tribe which had given so much offence to the king of Peru, that they were obliged as a punishment to extirpate all their upper teeth; in consequence of which, even now, the people of that district have no teeth in their upper jaws. From Tumbez for five hundred leagues to the south along the coast of the south sea, and for ten leagues in breadth, more or less according to the distance between the sea and the mountains, it never rains or thunders. But on the mountains which bound that maritime plain, there are both rain and thunder, and the climate has the vicissitudes of summer and winter nearly as in Spain. While it is winter in the mountain, it is summer all along the coast; and on the contrary, during the summer on the mountain the coast has what may be termed winter. The length of Peru, from the city of St Juan de Parto to the province of Chili lately discovered, is above 1800[19] leagues of Castille. Along the whole of that length, a vast chain of exceedingly high and desert mountains extends from north to south, in some places fifteen or twenty leagues distant from the sea, and less in others. The whole country is thus divided into two portions, all the space between the mountains and the sea being denominated the plain, and all beyond is called the mountain.
The whole plain of Peru is sandy and extremely arid, as it never has any rain, and there are no springs or wells, nor any rivulets, except in four or five places near the sea, where the water is brackish. The only water used by the inhabitants is from torrents which come down from the mountain, and which are there formed by rain and the melting of snow, as there are even very few springs in the mountainous part of the country. In some places, these torrents or mountain-streams