“ The watercourses are the Colorado river and its tributaries, the Little Colorado, Gila, Zuni, San Juan, and several smaller streams. The principal rivers pass through cañons that are among the greatest wonders of the world. Dotting the plains are enormous mesas or tablelands, some with perpendicular sides more than 1,000 feet high. No part of the world has so rich a field of archæological and ethnological investigation as Arizona. Long-buried dwellings and cities, with other ruins of an exceedingly ancient people, are being continually disclosed. ”

“ Geologists declare that the Colorado river, in its whole course, has cut through strata representing a thickness of 25,000 feet, and exposed the gradations from the quarternary alluvial deposits through volcanic alterations to the primary azoic rocks. ”

“ Manufactures.—Natural conditions have made Arizona more of a mining and agricultural region than a manufacturing one. The chief productions were flour, grist, and lumber in various forms. In 1914 there were in the State 322 manufacturing establishments, employing 6,898 wage earners. The capital invested was $40,300,000; wages paid amounted to $6,229,000; value of materials used was $39,283,000; and the value of the finished product was valued at $64,090,000. ”