Although the immediate district in which these aboriginal traces are found does not seem to have fallen within the region occupied by the Nahuatt or Mexican tribes of Central America at the time of the Conquest, but in what was called the country of the Chontals, yet it is not difficult to suppose, that, in the various hostile encounters which we know took place between the two nations, the Nahuatts may have penetrated as far as Aramacina, and left here some record of their visit,--if, indeed, they did not succeed in effecting a temporary lodgment. At any rate, there can be but little doubt that a portion of the engravings on the rocks above described, but particularly those which seem to record dates, were made by them. From Aramacina to Caridad, the next town on our course, and four leagues distant, the road is laid out on Spanish principles, which are the very reverse of scientific. Instead of keeping along the river-valley, it passes directly over a high, rocky spur of the lateral mountains, through a pass called _El Portillo_, (The Portal,) elevated fifteen hundred feet above the sea. The view from its summit, whence we were enabled to trace our course up to this point, as if on a map, in some degree compensated us for the labor of the ascent. From here we could also look ahead, beyond the town of Caridad; and we saw, with some misgivings, that there the lateral ranges of mountains seemed to send down their spurs boldly to the river, leaving only what the Spaniards call a _canon_ or narrow gorge, walled in with precipitous rocks, for its passage. A shadow came over every face, in view of the possible obstacles in our path; and although we tried to reassure ourselves by the reflection, that, where so large a stream could pass, there must certainly be room enough for a road, yet, it must be confessed, we wound down the hill of El Portillo to Caridad with spirits much depressed. Moreover, a drizzling rain set in before we reached the village, and clouds and vapor settled down gloomily on the surrounding hills and mountains, rendering us altogether more dismal than we had been since leaving New York. We rode up to the _cabildo_ of Caridad in silence, and fortunately found it new, neat, and comfortable, with cover for our mules, ample facilities for cooking, and an abundance of dry wood for a fire, now rendered necessary to comfort by the damp, and the proximity of high mountains. Fortunately, also, we experienced no difficulty in getting fodder for our animals and food for ourselves,--a bright-eyed Señora, wife of the principal _alcalde_, volunteering to send us freshly baked and crisp _tortillas_, which were brought to us hot, in the folds of the whitest of napkins. After dinner and coffee, and under the genial influences of a fire of the pitch-pine, which gave us both light and heat, our spirits returned, and we did not refuse a hearty laugh, when H. read from a dingy paper, which he found sticking on the wall of the _cabildo_, the