MEXICO or NEW SPAIN.

The Spanish possessions in North America, extend from the isthmus of Darien, along the coast of the Pacific Ocean, to the distance of more than two thousand two hundred miles. One half of them is situated under the burning sky of the tropics, and the other belongs to the temperate zone. Their whole interior forms an immense plain, elevated from six to eight thousand feet above the level of the adjacent seas. The chain of mountains which constitutes this vast plain, is a continuation of that which, under the name Andes, runs through South America. They are, in general, little interrupted by valleys, and, for the most part, their declivity is very gentle. In consequence of this elevation, the Mexican provinces, situated under the torrid zone, enjoy a cold rather than a temperate climate. The interior provinces, in the temperate zone, have, like the rest of North America, a climate essentially different from that of the same parallels in the European continent. A remarkable inequality prevails between the temperature of the different seasons: German winters succeed to Neapolitan and Sicilian summers.

This country suffers many inconveniences from a want of water, and particularly of navigable rivers. The Rio del Norte and the Rio Colorado are almost the only rivers of any importance. The lakes with which Mexico abounds, are merely the remains of immense basins of water, which appear to have formerly existed on the high and extensive plains of the Cordilleras. The largest of these, the Lake of Chapala, contains nearly one hundred and sixty square leagues, and is about twice as large as the lake of Constance.

A great portion of high land, in the interior of New Spain, is destitute of vegetation; and some of the loftiest summits are clad with perpetual snow. This country is not so much disturbed by earthquakes as several parts of South America; for, in the whole of New Spain there are only five volcanos; Orizaba, Popocatepetl, Tuxtla, Jorullo, and Colima.

The volcano of Jorullo, in the province of Valladolid, was formed during the night of the 29th of September, 1759. The great catastrophe, in which this mountain rose from the earth, and by which a considerable space of ground changed its appearance, is, perhaps, one of the most extraordinary physical revolutions in the history of the earth. Geology points out parts of the ocean, where, at recent periods, near the Azores, in the Egean Sea, and to the south of Iceland, small volcanic islands have arisen above the surface of the water; but it gives no example of the formation, amidst a thousand small burning cones, of a mountain of scoria, near seventeen hundred feet in height, above the adjoining plain. Till the middle of the year 1759, fields cultivated with sugar-canes and indigo occupied the extent of ground between the two brooks called Cultamba and San Pedro. In the month of June, a subterraneous noise was heard. Hollow sounds of most alarming description, were accompanied by frequent earthquakes, which succeeded one another for fifty or sixty days, to the great consternation of the inhabitants. From the beginning of September every thing seemed to announce the complete re-establishment of tranquillity; when, in the night between the 28th and 29th, the subterraneous noises recommenced. The affrighted Indians fled to the mountains; and a tract of ground, from three to four square miles in extent, which goes by the name of Malpays, rose up in the shape of a bladder. The bounds of this convulsion are still distinguishable in the fractured strata. The Malpays, near its edges, is only about forty feet above the old level of the plain; but the convexity of the ground thus thrown up, increases progressively, towards the centre, to an elevation of more than five hundred and twenty feet.

The persons who witnessed this astonishing catastrophe, assert that flames were seen to issue forth, for an extent of more than half a square league; that fragments of burning rocks were thrown up to prodigious heights; and that, through a thick cloud of ashes, illumined by the volcanic fire, the softened surface of the earth was seen to swell up like an agitated sea. The rivers of Cultamba and San Pedro precipitated themselves into the burning chasms. The decomposition of the water contributed to invigorate the flames, which were distinguishable at a vast distance. Eruptions of mud, and other substances, indicated that subterraneous water had no small share in producing this extraordinary revolution. Thousands of small cones, from six to nine feet in height, called by the Indians "hornitos," or ovens, issued forth from the Malpays. Each small cone is a "fumorola," from which a thick vapour ascends; and in many of them a subterraneous noise is heard, which appears to announce the proximity of a fluid in ebullition. In the midst of the ovens six large masses, elevated from one thousand three hundred to one thousand six hundred and forty feet above the old level of the plains, sprung up from a chasm. The most elevated of these is the great volcano of Jorullo. It is continually burning, and has thrown up an immense quantity of scorified and basaltic lavas, containing fragments of primitive rocks. These great eruptions of the central volcano continued till the month of February, 1760. In the following year they became gradually less frequent. The Indians, frightened at the horrible noises of the new volcano, had abandoned all the villages, within seven or eight leagues of it. They, however, gradually became accustomed to them, and returned to their cottages. So violent were the eruptions of this mountain, that the roofs of houses in Queretaro, though at a distance of more than forty-eight leagues, in a straight line from the scene of explosion, were sometimes covered with ashes.

The Mexican population consists of seven races, 1. Individuals born in Europe; 2. Creoles, or Whites of European extraction, born in America; 3. Mesti zos, or descendants of whites and Indians; 4. Mulattoes, descendants of whites and negroes; 5. Zambos, descendants of negroes and Indians; 6. Indians, or the copper-coloured indigenous race; and, 7. African negroes.

The number of Indians, including those only who have no mixture of European or African blood, are more than two millions and a half in number; and these appear to constitute about two-fifths of the whole population of Mexico. They bear a general resemblance to the Indians of Canada, Florida, Peru, and Brazil: they have a similar swarthy and copper-coloured skin, smooth hair, little beard, squat body, long eyes, with the corners directed upward towards the temples, prominent cheek bones, and thick lips. There is a great diversity in their language, but they appear to have been all descendants from the same original stock.

It is probable that these Indians would live to a great age, did they not often injure their constitution by drunkenness. Their intoxicating liquors are rum, a fermentation of maize, and the root of the jatropha; and especially a wine which is made from the juice of the great American aloe. The police, in the city of Mexico, sends round tumbrils, to collect such drunkards as are found lying in the streets. These are treated like dead bodies, and are carried to the principal guard-house. The next morning an iron ring is put round each of their ancles, and, as a punishment, they are made to cleanse the streets for three days.

The Mexican Indian, when not under the influence of intoxicating liquors, is grave, melancholic, and silent. The most violent passions are never depicted in his features; and it is sometimes frightful to see him pass, at once, from a state of apparent repose, to the most violent and unrestrained agitation. It is stated that these Indians have preserved, from their ancestors, a particular relish for carving in wood and stone; and that it is astonishing to see what they are able to execute with a bad knife, on the hardest wood. Many Indian children, educated in the college of the capital, or instructed at the academy of painting, founded by the king of Spain, have considerably distinguished themselves, but without leaving the beaten track pursued by their forefathers; they chiefly display great aptitude in the arts of imitation; and in the purely mechanical arts.