From the Spanish Conquest to the Present Era; Containing a Condensed and Connected General View of the Manners, Customs, Religion, Commerce, Soil, and Agriculture - Animal, Vegetable, and Mineral Productions - a Concise Political and Statistical Review of the Changes Effected in that Country, with is Present Form of Government, &c. &c. - Also, Observations, Speculative and Practical, as to the Best Means of Working the Mexican Mines, by a Combination of British Talent, Capital, and Machinery