Matamoros lies on the right bank of the Rio Grande or Rio Bravo del Norte, at the distance of ten leagues from its mouth. It contains about 10,000 inhabitants, who have become well acquainted with the people of the United States during the recent war. The climate of Matamoros is hot and sickly, like that of Tampico or Vera Cruz; but as the river upon which it lies is perhaps the most important in Mexico, and has proved navigable by steamers for a considerable distance in the interior, it is probable that this place will become the depot of a large and valuable commerce destined for the supply of the northern States of the Mexican confederacy. By the treaty of 1848, the Rio Grande became the boundary between large portions of the two republics; and as the intervening country between the Nueces and the Rio Grande is not considered at present attractive for agricultural purposes, it is likely that it will long continue unoccupied and unsettled, thus leaving the whole of our commerce to be conveyed to Matamoros, or to our own neighboring settlements on the opposite shore, for distribution throughout the valley of the Rio Grande.
The other towns and villages in Tamaulipas worthy of note, are Altamira, Horcasitas, Coco, Escandon, Llera, Santillana, Padilla, Hoyos, Guadalupe, Reinosa, Camargo, Mier, Revilla, the most important of which lie on the margin of, or near, the Rio Grande.
ANCIENT REMAINS IN TAMAULIPAS.
The only remains of Indian architecture and civilization of whose existence we are aware, are those described in the small work published by Mr. B. M. Norman in 1845, to which we have already alluded, entitled "Rambles by Land and Water or Notes of Travel in Cuba and Mexico." This gentleman's notices of the antiquities in this region are exceedingly brief, sketchy and indefinite, nor are the illustrations with which his text is accompanied, calculated to convey more vivid pictures of the relics he visited or discovered in the course of his investigations along the margins of the Panuco.
Departing from Tampico, in March, 1844, he ascended that river in a canoe, paddled by an Indian, and before nightfall, on the second day of his primitive voyage, reached Topila creek, three miles from the mouth of which he landed at a rancho or cattle farm, belonging to Señor Coss, of Tampico. Five miles from this spot, lying to the eastward of another rancho, he found several considerable mounds, one of which was more than twenty-five feet high and of a circular form. At its sides, a number of layers of small flat well hewn stones were still to be seen; while scattered about were many others of larger size and various shapes. All were perfectly plain or unadorned, and had apparently been used for the door posts and lintels of edifices.
On the following day, the traveller visited the rancho de las Piedras, distant about two leagues and a half in a southerly direction from the bank of the Topila. Passing through a dense wilderness, he reached after much toil, an elevated table land or plateau, near a chain of hills running through this section of country and known as the Cerro de Topila. Here he found more scattered stones which had once formed parts of buildings; while, further on, he discovered several mounds, whose sides were constructed of loose layers of smooth and uniform blocks of concrete sandstone. Most of these layers, had, however, fallen from their places in the tumuli, and were heaped in masses near their base. About twenty of these mounds, lay contiguous to each other, varying in height from six to twenty-five feet, some being circular and others square. The principal elevation in this group of pyramids covers an area of about two acres, and at its base, Mr. Norman discovered a cylindrical stone slab seven inches thick, four feet nine inches in diameter, and pierced through the centre, lying upon the top of a circular wall whose top was level with the ground. On removing this stone he found a well filled up with broken stones and fragments of pottery. The upper portion of the slab bore evidence of having been originally sculptured, but the tracings of the chisel were so much worn by time and seasons that they could not be drawn with accuracy. On the top of the tumulus, in front of which this well was discovered, grew a wild fig tree, whose gigantic height of more than an hundred feet, indicates the great age of the work and the long period of its abandonment.