Series of letters from Borica to Peru concerning frontier matters, including Borica's investigation of Peru. Borica discovers that -1) Peru's troops are rarely revied; 2) target practice is held infrequently, so Janos soldiers shoot poorly in battle; 3) during 3 years Peru responsible for supplying his troops, he overcharged soldiers 600 pesos, including selling beef he purchased for 12 reales at 15 reales or more. Formal charges, based on testimony of sargento, Tres Cavos, y Cinco soldados of Janos delineated pp.83-86. (T. Sheridan) (1977)