STATE OF SAN LUIS POTOSI.
The State of San Luis Potosi is bounded on the east by the State of Tamaulipas; on the north by Nuevo Leon; on the west by Zacatécas; on the south by Guanajuato and Querétaro, and on the south-east by Vera Crux. The western portion of the State is quite mountainous; but towards Tamaulipas, the Cordillera is somewhat broken, and a lower hilly country stretches out towards the south-east. The Panuco and the Santander are the only two rivers, and the lagunes of Chariel and Chila the only two lakes of importance in the State.
The climate of the mountain region and table lands is cold, while that of the lower elevations and flats towards the eastern boundary is much warmer, and, at certain seasons, very unhealthy.