The great tract of uncultivated country between the Colorado and Gila, is inhabited by tribes of wandering Indians whose names appear on the map. To the south of the Gila is a tract of uncultivated country, inhabited by the Apaches Tontos, and other tribes: it was in this country that two missionaries in 1773, at the distance of three miles from the Gila, discovered the ruins of a Mexican or Aztec city, the houses of which were similar to those that are mentioned in the account of Mexico. These houses were large, and the one most entire, consisted of five rooms three stories high, and in length, was 445 feet by 276 broad, the walls being 3 feet 11 inches in thickness. A wall and towers surrounded the mansion; and the ruins of the city occupied more than a square league; fragments of pottery and domestic utensils were found in all directions; and a canal had conducted the waters of the Gila to the city. This was supposed to be the second station of the Mexicans in their migration from the north; the third is in New Biscay, near Fort Yanos. The Indians in the environs of these great buildings are more polished than their neighbours, and are in a more social state; from which circumstance, it is conjectured, that they are a remnant of the Aztec nation, who settled here in their journey from the northern countries. _CALIFORNIA._ CALIFORNIA is divided into two intendancies. New and Old California. Old California consists of the peninsula bearing that name. New California reaches from Port San Francisco to the isthmus, or down to the Colorado, and comprises a strip of land along the coast; as, however, neither of these countries are at present of any great importance, we shall not divide them in our account, but describe them both together under the general head of California. The boundaries of this country are an imaginary line, in the 39th degree of north latitude; on the north, the river Colorado and Indian tribes; and the Vermillion Sea, or Californian Gulf on the east; the Pacific Ocean on the west and south. The bay of Sir Francis Drake, which runs some distance into the country, is the limit placed by nature between the claims of the British government and that of Spain in North America; and on the south-side of this bay is another, called the bay of St. Francisco, where the Spaniards have a small town and fort; this settlement is in 37° 48ʹ north latitude according to the latest authorities, but some have made it near 39°. The length of California, may be however computed from Sir Francis Drakeʼs harbour, in 39° north latitude, to Cape Lucas, in 22° 55ʹ north latitude, and 109° 52ʹ west longitude; the breadth varies so much, that a reference to the map will give a better idea of it than words.