The collection of tributes was not effected invariably in the same manner throughout the territory of New Spain. In Mexico the _Administrador-General_ imposed this task on the justices whose duty it was to watch over the Indians. The aborigines in the capital were divided into two sections, one comprising the Tenochas of San Juan, and the other the Tlaltelolcos of Santiago, both of which had their governors and other police officers, according to Spanish custom. The first of these bands, dwelling on the north and east of the capital, was, in the olden time, the most powerful and noble, and at that period numbered five thousand nine hundred families. The other division, existing on the west and south, was reduced to two thousand five hundred families. In the several provinces of the viceroyalty the Indian tributes were collected through the intervention of one hundred and forty-nine chief _alcaldes_ who governed them, and who, before they took possession of their offices, were required to give security for the tribute taxed within their jurisdiction. The frontier provinces of this vast territory, inhabited only by garrisons, and a few scattered colonists, were exempt from this odious charge. In all the various sections of the nation, however, the Indians were accurately enumerated. Two natives were taxed together, in order to facilitate the collection by making both responsible, and, every four months, from this united pair, six _reales_ were collected, making in all eighteen in the course of the year. This gross tax of two dollars and twenty-five cents was divided as follows: eight _reales_ were taxed as tribute;--four for the royal service;--four and a half as commutation for a half _fanega_ of corn which was due to the royal granary;--half a _real_ for the royal hospital, in which the Indians were lodged when ill; another half _real_ for the costs of their law suits; and, finally, the remaining half _real_ for the construction of cathedrals. * * * * * In 1748, the Count Revilla-Gigedo, in conformity to the orders of the king, and after consultation in general meeting with the officers of various tribunals, determined to lay the foundation of a grand colony in the north, under the guidance of Colonel José Escandon, who was forthwith appointed governor. This decree, together with an account of the privileges and lands which would be granted to colonists, was extensively published, and, in a few years, a multitude of families and single emigrants founded eleven villages of Spaniards and mulattoes between Alta-Mira and Camargo. The Indians who were gathered in this neighborhood composed four missions; and, although it was found impossible to clear the harbor of Santander, or to render it capable of receiving vessels of deep draft, the government was nevertheless enabled to found several flourishing villages which were vigilant in the protection of the coast against pirates.