. Political essay on the kingdom of New Spain [microform] : containing researches relative to the geography of Mexico, the extent of its surface and its political division into intendancies, the physical aspect of the country, the population, the state of agriculture and manufacturing and commercial industry, the canals projected between the South Sea and Atlantic Ocean, the crown revenues, the quantity of the precious metals which have flowed from Mexico into Europe and Asia, since the discovery of the new continent and the military defence of New Spain. Agriculture; Mines and mineral resourc
. Political essay on the kingdom of New Spain [microform] : containing researches relative to the geography of Mexico, the extent of its surface and its political division into intendancies, the physical aspect of the country, the population, the state of agriculture and manufacturing and commercial industry, the canals projected between the South Sea and Atlantic Ocean, the crown revenues, the quantity of the precious metals which have flowed from Mexico into Europe and Asia, since the discovery of the new continent and the military defence of New Spain. Agriculture; Mines and mineral resources; Agriculture; Mines et ressources minières. 140 POLITICAL ESSAY ON THE [book ir. The vein of San Barnabe was begun in the year 1548, twenty-eight years after the death of Mon- tezuma, a circumstance whicli must appear so much the more remarkable, as the town Zacatecas is distant in a straight lino more than 100 leagues from the valley of Tenorhtitlan. It is said that the silver minerals of the district of Zacatecas were discovered by the muleteers who travelled between Mexico and Zacatecas. In this district near the basaltic-hill of Cubilete the mine of San Barnabe exhibits the most antient mining operations. The principal vein of Guanaxuato (la veta marire) was discovered somewhat later, on digging tlie pits of Mellado and Rayas. The first of these pits was bej»;un on the 15th, and the second on the 16th of April in the year 1558. The mines of Comanjas are undoubtedly still more antient than those of Guanaxuato. As the total produce of the mines of Mexico till the beginning of the 18th century, has never been more than 600,000 marcs of gold and silver a year, we may conclude that in the 16th century they did not labour with very great activity in the extraction of the minerals. The veins of Tasco, Tlapujahua, Zultepeque, Moran, Pachuca, and Real del Monte, and those of Sombrerete, Bolaiios, Batopilas and Rosario have afforded from time to time immense wealth; but their pr
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Keywords: ., bookcentury1800, booksubjectagriculture, booksubjectminesandmine
