Correspondence concerning: index of letters included; discovery of new mines, metals, silver, flooding of various mines, damages incurred; lack of arms and soldiers along frontera, effect upon countering of Indian attacks, tranquility of Chichimecas, many of whom had converted; debate over sending soldiers to missions to ensure la quietud y custodia of the Indians; reviews by Ussel y Guimbarda of military conditions and salaries, military relations with Indians, mining. (L. Kerr, November 1988)