The principal rivers, with the waters of which the Paraguay is enriched, join it on the western shore: the Jaurù, which flows into the Paraguay in 16° 29´ of south latitude, and 320° 10´ of longitude from the island of Ferro; the Mandiỹ beneath the site of the feigned lake Xarayes; the Rio Verde; the Yabebirỹ; the Pilcomayo, which falls into the Paraguay in two branches some leagues apart; the Timbò, a very large river, formed of two other lesser streams in the place called La Herradura, and diametrically opposite to the river Tebiguarỹ, which is at the other bank of the Paraguay. Here I founded the Abiponian colony of San Carlos. The Rio Grande, or Vermejo, enters the Paraguay before its junction with the Parana. On the eastern shore, beginning at the north, the Paraguay is joined by the river De los Porrudos, which had before received the waters of the Cuyaba, the name of a Portugueze town, and to which also the rivers Cuchipò-guazù, Cuchipò-miri, and Manso had previously united themselves. Lower down the river Taguarỹ, augmented by the waters of the Camapuâ, enters the Paraguay by three mouths, which are formed by intervening lands. Through these and other rivers the Portugueze sail in boats to their colonies Cuyabà, and Matto Grosso, where they gather little bits of gold out of the sand, with no inconsiderable profit. In Camapuâ, an intermediate place, Andreas Alvarez, a Portugueze, took up his residence with a number of negro slaves, and supplied the Portugueze, who travelled backwards and forwards, with provisions, waggons, and other necessaries from the produce of his land. The following are the names of the rest of the rivers: the Mboteteỹ, in the land of the Guarany Ytatinguas, for whom the Jesuits formerly founded two colonies in this place; the Ygarỹpe, the Mboymboỹ, the Tareytỹ, the Guaycuruỹ, on the banks of which the Guaycarus settled, and where they remain to this day; the Corrientes, the Mbaerỹ, the Ỹpane-guazù, formerly the Guarambarè, the Yeyuỹ, navigable to large boats, impeded by many rocks, and augmented by many rivers, the most important of which is the Caapivarỹ, which mingles its waters with the Yeyuỹ, about twenty leagues before that river enters the Paraguay. The shores of the Yeyuỹ, and of the Caapivarỹ, are surrounded by immense woods, nurseries of the herb of Paraguay, a vast quantity of which is carried from the town Curuguati to the city of Asumpcion, by the other Spanish inhabitants. But let us proceed. The Paraguay receives into itself the following streams: the Tobatỹ, the Caañiabê, and the Tebiguarỹ, navigable to middle-sized vessels. By the accession of so many, and such considerable tributary streams, the Paraguay is increased to such a size, that the old Spaniards used to sail through it to the city of Asumpcion, and even more distant places, in the same ships which had borne them on the Ocean, from the port of Cadiz. At this time no one dares attempt that,