formerly a powerful empire in South America, but now a province of Spain, situated between 60° and 81° of west longitude, and between the equator and 25° of south latitude, being near 2000 miles in length from north to south, and from 200 to 500 broad: it is bounded by Popayan, on the north; by the mountains of Andes, on the east; by Chili and La Plata, on the south; and by the Pacific Ocean, on the west.