Such is a brief review and summary of the soil and seasons of Mexico. The average annual yield of the corn lands throughout Mexico is estimated at twenty-five bushels for one. In portions of the country, during favorable years, and where the irrigation is good, from sixty to eighty bushels for one have been produced. At Cholula, near Puebla, the increase is stated at forty for one, while at Zelaya, Salamanca, and Santiago, further north, from thirty-five to forty are produced on an average of years. In the valley of Mexico, proper, the yield is from eighteen to twenty; and even in the old possessions of California, it is set down at from fifteen to seventeen. The best writers consider, however, that notwithstanding the extraordinary fertility of their soil, the Mexicans do not produce in ratio of quantity, superior crops to the best agricultural portions of the United States. * * * * * The agricultural advantages of New Spain were early pointed out by some of the colonial authorities to the Spanish Home government; but the very fact of their existence seems to have alarmed the Court and to have originated those restrictive laws which, as we have shown in our historical narrative, so long ensured the dependence of the colony. The King, the Cabinets and the Council of the Indies united in believing that if the internal resources of the nation were developed, fostered, and placed upon a firm basis, the political as well as the industrial independence of America might naturally ensue; and accordingly, these authorities resolved at once to adopt the narrow system of restrictions which retained the essentially productive power in the hands of Spain. Zumarraga, the first bishop and second archbishop of Mexico, addressed urgent letters to the Emperor Charles V., exhibiting the agricultural value of the country, and solicited laborers, plants, seeds, cattle, and all the usual means for the development of Mexican resources. The _Bandos_ published in the year 1524, by Cortéz, which are yet preserved in the Hospital of Jesus, in the capital, contain wise decrees for the encouragement of industry, and prove that the military life of the Conqueror had not made him forgetful of his early agricultural labors in the West Indies when he first emigrated from Spain. But the policy of Spain was constantly declared to be adverse to this wholesome and reasonable encouragement. When Luis de Velasco, the second of that name who was viceroy in New Spain, passed thence to the viceroyalty of Peru, he was instructed by the King and Council of the Indies to be careful not to "foster manufactures, nor to allow the cultivation of vines, inasmuch as there was already ample provision of these things and the commerce of the kingdom should not be impaired by such colonial products." At the same epoch, his successor in Mexico, the Conde de Monterey, was also required to be equally vigilant and restrictive in the region confided to his government.