The rivers which water Tomina are small and unite into one stream, named _El Dorado_, and it is separated from Santa Cruz de la Sierra, by the _Rio Grande_, which joins the Mamore. There are some small lakes in this province, two of which are in a district, named Mayocaya. In this province, the inhabitants who are mostly Indians, amount to 12,000, and the town of the same name, is fifty-five miles east of La Plata, in 19° 10' south latitude, and 65° 46' west longitude, but is inconsiderable; the vicinity of the warlike Indians, rendering the province an insecure place of abode. The town of _Porco_ or _Talavera de la Puna_, in 19° 40' south latitude, and 67° 56' west longitude, is the capital of the province of PORCO, which commences on the west side of the town of Potosi, and extends twenty leagues. The coldness of its situation, amid the high ridges of the Andes, occasions a scarcity of fruits and grain; but it abounds with fine cattle, and the mountain of Porco in this province is celebrated, as having been the place from whence the Incas of Peru drew the greater part of their silver, and was the first mine worked by the Spaniards after the conquest; the district still producing great quantities of that metal, particularly at _Tomahave_, and the mines of the Porco mountain, which are twenty-three leagues from Chuquisaca. The inhabitants amount to 22,000. Thirty leagues south of La Plata, lies the province of CHICHAS Y TARIJA; it is a very fertile territory, and produces wheat, maize, oil, wine and fruits; it also contains excellent pastures, abounds in cattle, and has several gold and silver mines. The river _Tipuanis_, which flows on its eastern side, carries much gold in its sand, which the natives employ themselves in collecting. The greatest extent of this province is thirty-five leagues, and the eastern parts are only separated from the independent tribes, by the above mentioned river. Its chief town is _San Bernardo de Tarija_, which was founded by Don Francisco de Toledo, to repel the incursions of the warlike Indians, and to defend the high road to Tucuman, in 1591. It has four convents and a college, formerly belonging to the Jesuits; in one of its convents, a cross is adored, which it is pretended, was found by the conquerors of Peru in a cave in this country; and that it was made by one of the Apostles, who had preached the Gospel to the Peruvians. Joining Tarija, and on the south-west, is the province of LIPES which extends 35 leagues. Its capital of the same name is 150 miles south-south-west of Potosi, in 21° 40' south latitude, and 68° 16' west longitude. The climate of this country is excessively cold, and its chief commerce consists in the produce of its mines, of which it possesses two of gold, one of silver, and one of copper.