The chief town of the same name is principally inhabited by Spaniards and mestizoes, who are in general opulent; it is seventy miles south of Arequipa, in 17° 20' south latitude, and 70° 56' west longitude. The most southerly district of the intendancy of Arequipa, and the last of the kingdom of Peru, is ARICA; it is bounded on the north by Arequipa and Moquehua, west by the Pacific, east by the Cordillera and Charcas, and south by the desert and province of Atacama in the kingdom of La Plata. It is eighty-two leagues in length, north-west and south-east; and sixteen wide, east and west; composed of valleys commencing from the Andes and running to the Pacific. The ranges separating these valleys are arid and unfruitful, while the vales themselves grow maize, wheat, &c. Long-pepper is also cultivated, and a thriving trade is carried on with this, and with cotton, sugar, olives, wines, and brandies. The mountains feed numerous herds of cattle, and are famed for the vicunas, llamas, &c.; but the climate is hot, and in the higher parts inclement. The chief town is _Arica_, in 18° 26' south latitude, and 70° 18' west longitude, 210 miles north-west of La Plata, and 270 north-west of Atacama, in a beautiful valley on the shore of the Pacific, with a good port, much frequented by the coasting vessels. It was formerly a large place, but having been destroyed by an earthquake in 1605, and sacked by the English in 1680, most of the inhabitants removed to _Tacna_ twelve leagues distant, where the climate is better. Near the small port of Yquique are the celebrated silver mines of _Huantajaya_ already mentioned. Having now treated of the known provinces of Peru, we shall give some account of those countries which lie on the east of the Andes, between the intendancies and the frontier of Portuguese America. By the most recent authorities it appears that the viceroyalty of La Plata is supposed to extend to the frontiers of Jaen de Bracamoros and Maynas in New Granada; but as it is not distinctly stated where its limits in this quarter are, it will be better to follow the old boundary of Peru, on the north-east and east. Within the confines of that extensive territory, lying between the Andes, the Guallaga, the Maranon, or Ucayale, and the western frontiers of the Portuguese settlements, are several immense tracts of land, known by the names of PAMPAS DEL SACRAMENTO; COLONNA, or THE LAND OF THE MISSIONS; CHUNCHOS, &c. The PAMPAS DEL SACRAMENTO, in their restricted sense, include all the country between the Guallaga on the east, Maynas on the north, the Ucayale on the west, and the Apurimac on the south.