The Encyclopaedia Britannica; ..A dictionary of arts, sciences and general literature . ut a scarcity of water. The entire territory isdrained by the Colorado River and its tributaries, theformer entering across the middle of the northernboundary, and running for more than 300 milessouthward along the western boundarv to the Gulfof California, and is navigable for about 500 milesfrom its mouth. It has a total fall of more than3,000 feet within the territory. In its coursethrough the Grand Canon the vertical walls rise to aheight of from 4,000 to 6,000 feet, and are sectionsof almost horizontal
The Encyclopaedia Britannica; ..A dictionary of arts, sciences and general literature . ut a scarcity of water. The entire territory isdrained by the Colorado River and its tributaries, theformer entering across the middle of the northernboundary, and running for more than 300 milessouthward along the western boundarv to the Gulfof California, and is navigable for about 500 milesfrom its mouth. It has a total fall of more than3,000 feet within the territory. In its coursethrough the Grand Canon the vertical walls rise to aheight of from 4,000 to 6,000 feet, and are sectionsof almost horizontal strata, representing, with thesmaller cations of tributaries, all the geologicalformations in regular order to a depth of 25,000feet. The surface of .\rizona is composed of broadplateaus, averaging in elevation from 80 to 100 feetabove the level of the sea in the south, to 7,500 feetin the north. They are crossed by lofty mountainranges, whose peaks tower to a height of from 12,000to 14,000 feet, and are rent by rivers whose beds are,in some cases, 6,000 feet below the surface. The. SEAL OF THE TERRITORY OF principal ranges are the Zuiii and Mogollon in theeast, the Santa Catarina and Pinaleno in the south-east, the Dragon and Santa Ana in the south, theBlack and Gerbat in the west, the Gila, Black Mesaand San Francisco in the central and the Northsidein the northwest. From the central mountainsimmense lava-beds trend northward to the ColoradoChiquito, provmg the existence of volcanoes at someremote period. The region of country now constituting NewMexico and Arizona was first explored b}- the Span-iards in 1526, and about 1580 they established amilitary post at Tucson. The early adventurersfound an Indian population, consisting of theApaches and their allies, who had undoubtedly sup-planted the Aztecs or Toltecs in the possession ofthe country. Abundant proof of the remarkable civilization of these latter aborigines exists in theruins of walled towns and immense com
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