The coast which borders the Mexican gulf, is lined with long narrow islands, between which and the continent, are sheets of water denominated lakes. The mouth of the Rio Panuco, and the bar of New Santander, are the only ports of the coast from which vessels trade with the West Indian Islands in provisions. The whole coast has remained very little explored; such parts as have been surveyed, are found to be shut out by sand bars, which prevent large vessels from passing into the harbours, which are otherwise excellent. The southern parts contain the mines of Catorce, Guadal-Cazar and Charcas, in the mountain districts. There is a route which the Americans follow from New Orleans, through this intendancy, to Mexico, for the purposes of traffic, which is represented to require ten weeks to perform it, under great perils and hardships. The great ridge of Anahuac, or plain of New Spain, gradually descends, and loses itself in this intendancy; and on its slope is situated the capital, _St. Luis Potosi_, where the intendant or governor-general resides; it is a little westward of the source of the Panuco River, and contains a population of 12,000 persons. COAGUILA. COAGUILA is a province of St. Luis Potosi, lying to the north of New Leon, and sometimes included in that division; it is also called _New Estremadura_, and in some maps Cuvilla. It is bounded on the north by uncultivated countries, on the east by the provinces of Texas, New Santander, and Leon, on the west by New Biscay, and the Bolson de Mapimi, and on the south by New Biscay. Its extent is 200 leagues from north to south, and 160 from north-west to north-east. This province is nearly a waste, peopled only by the Indians and some few missions, and if it possesses mineral treasures, they remain to be discovered. The capital is Monclova, situated in the south part, the residence of a military governor. The next town of importance is Castanuela, on the southern borders. The Rio del Norte pervades this district. NEW LEON Is bounded on the north by Coaguila, on the west by Coaguila and New Biscay, on the east by New Santander, on the south by Zacatecas and St. Luis Potosi, or Guasteca. It is a very mountainous country, thinly inhabited and possessing few other mines than those of lead. The chief town is Monterey, the see of a bishop; there are also several villages and small stations; but although it has been sometimes designated by the high sounding title of the New Kingdom of Leon, it is only a small tract, of which scarcely any thing is known. NEW SANTANDER AND TEXAS, AND PANUCO, OR POTOSI. THESE provinces extend for an immense length along the shores of the Mexican gulf, and commencing at the estuary of the river Mexicano follow the course of that river; Coaguila then bounds them on the north, New Leon on the east, Mexico on the south, and the gulf of Mexico on the west. The Rio Bravo del Norte flows through the centre of these provinces.