The communal system of the Latin races was well adapted to this country of oases and detached valleys. Caesar knew nearly as much about the governing machine as the sachem of Tammany Hall, or a governor in Mexico. At least, he enriched himself. In countries requiring irrigation the communal system of distributing water has been found to produce the greatest good for the greatest number. The plan of a government granting water to corporations, to be sold as a monopoly, is an atrocity against nature; and no deserving people will for long submit to it. The question will soon come up whether the government has any more right to sell the water than the air. In the spring of 1857, a garden containing about two acres was prepared at Tubac, and irrigated by a canal from the Santa Cruz River. By the industry of a German gardener with two Mexican assistants, we soon produced all vegetables, melons, etc., that we required, and many a weary traveler remembers, or ought to remember, the hospitalities of Tubac. We were never a week without some company, and sometimes had more than we required; but nobody was ever charged anything for entertainment, horse-shoeing, and fresh supplies for the road. Hospitality is a savage virtue, and disappears with civilization. As the ores in the Santa Rita Mountains did not make a satisfactory yield, we turned our explorations to the west of the Santa Cruz River, and soon struck a vein of petanque (silver copper glance) that yielded from the grass roots seven thousand dollars a ton. This mine was named in honor of the president of the company, "Heintzelman," which in German mining lore is also the name of the genius who presides over mines. The silver bullion over expenses, which were about fifty per cent, was shipped, via Guaymas, to San Francisco, where it brought from 125 to 132 cents per ounce for the Asiatic market.