The _commerce_ of New Spain, with Europe and the United States, is carried on through the port of Vera Cruz only; and with the East Indies and South America, through that of Acapulco. But all the commercial transactions, and all the productions and manufactures, are subjected to such severe restrictions, that they are at present of little importance to the prosperity of the country. Were the various bays and harbours of Mexico and California to be opened to the trade of the world; and were correct regulations to be adopted, New Spain might become both wealthy and powerful. Many parts of the country abound in iron ore, yet iron and steel articles, of every description, are brought from Europe; for the manufacturing or working of iron is here strictly prohibited. This occasions the requisite utensils of husbandry, arms, and tools, to be enormously dear; and forms a great check to the progress of agriculture, and to improvements in manufactures. The _ancient Mexicans_ preserved the memory of events by figures painted on skins, cloth, or the bark of trees. These hieroglyphical and symbolical characters, being considered by the ignorant and bigoted Spaniards to be monuments of idolatry, the first bishop of Mexico destroyed as many of them as could be collected. In consequence of this barbarous procedure, the knowledge of remote events was lost, except what could be derived from tradition, and from some fragments of those paintings which eluded the search of the monks. With regard to the _public edifices_ of the Mexicans: their temples were merely mounds of earth faced with stone; and it is probable that their other public buildings were equally rude. The ancient natives bestowed little attention on agriculture, and were strangers to the use of money; but their ornaments of gold and silver indicated considerable ingenuity. They were acquainted with the manufacture of paper, of coarse cotton-cloth, glass, and earthenware; and they possessed the arts of casting metals, of making mosaic work with shells and feathers, of spinning and weaving the hair of animals, and of dying with indelible colours.