Six leagues below Asuncion, the first mouth of the great _Pilcomayo_ joins the main river, its second mouth being fourteen or sixteen leagues lower. In the intermediate space on the eastern side several small rivers join, and on one of them, the _Tibiquari_, at 20 leagues south-east of Asuncion is Villa Rica, a fine Spanish town. The _Rio Vermelho_ enters the west bank of the Paraguay in 26° 50' on which, in the interior, is the town of Salto. The stream of the Paraguay, being now augmented by the Pilcomayo, proceeds with increased rapidity and volume to 27° 25', where the immense body of waters, (much larger than itself) of the _Parana_ join it, and their united streams take the name of the _Rio de la Plata_, and continue their course by an immense channel to the south, forming several islands, and receiving many noble streams, till it has passed the thirty-fourth degree of south latitude, when it begins to take an easterly course, and after receiving the great _Uruguay_ or _River of the Missions_ above Buenos Ayres, it flows with a steady and majestic course, and by an immense estuary into the Atlantic ocean. The cape Santa Maria on the north, and St. Antonio on the south side of its mouth are 180 miles distant from each other, in 35° 30' south latitude; but the navigation of this fine river is interrupted by banks, rocks and islands, and is rendered dangerous by violent winds, which, sweeping with great velocity over the plains, cause perfect hurricanes in the La Plata. It is even said that the storms are more frequent than at sea, and it requires very little nautical knowledge to know that they must be infinitely more dangerous than on that element. The water of the ocean is fresh at a great distance from the La Plata, owing to the rapidity with which that river discharges itself. The other noted streams and features of Buenos Ayres will be noticed in the description of the different provinces. COMMERCE AND RESOURCES. Since the attachment of several of the Peruvian provinces to this government, the commerce and resources of the country are greatly enlarged and altered. From being merely an agricultural state, it has now become possessed of some of the richest mines in America. The districts which supply the most considerable quantities of the precious metal are Potosi, Changata, Porco, Oruro, Chucuito, La Paz and Carangas, and the mountains of Anauca, near Carabaya, and Asangara, north-east of lake Titicaca, were celebrated in the first years of the conquest for their gold mines.