FOREST POLICY. 



cottonwoods, willows, alders, ashes, hackberries and cherries. 

 The foothills around the deserts show scattered scrub pines; 

 scrub oaks occur notably on the hillsides; Mesas exhibit stunted 

 oaks and pines. Above 5,500 feet elevation, open, park-like for- 

 ests occur, notably of yellow pine (ponderosa), which, in the San 

 Francisco Mountains near Flagstaff, are said to form the largest 

 pure pine forest in the world. Trees are short, branchy and sappy. 

 On the northern slopes, at about 6,500 feet elevation, occurs 

 Douglas fir. The Rocky Mountain white pine (P. flexilis) and 

 foxtail pine (P. balfouriana) are found at similar elevations in 

 the San Francisco Mountains. Above them, large, often pure 

 forests of Arizona cypress (Cupressus Arizonica). At the timber 

 line, after Fernow, Engelmann's spruce and Arizona cork fir 

 (Abies Arizonica) occur. 



The plateau north of the Colorado Canon is almost tree- 

 less. 



A large number of coniferous species peculiar to Arizona 

 are found in the southern part of the diagonal chain. Here the 

 forest forms narrow stretches of fringe at altitudes exceeding 

 7,000 feet elevation. The best known mountain ranges are the 

 Bradshaw Mountains, with 25 square miles of forest, the lower 

 slopes dotted with nut pines (monophylla and edulis). 



The Mazatzal Mountains contain about 70 square miles of 

 forest (yellow pine, white pine, Douglas fir, white fir). 



The White Mountains contain about 100 square miles of 

 forest. Here, near the natural bridge, a splendid, almost pure 

 forest of Arizona cypress occurs. 



The Chirihahua Mountains contain 160 square miles of for- 

 est, a strip four miles wide and forty miles long. The Arizona 

 pine (Pinus Arizonica) and the Chirihahua pine (Pinus Chiriha- 

 huana), further, the Mexican pine (Pinus cembroides) and a white 

 pine (Pinus strobiformis) are additions to the tree flora in these 

 southeastern mountains, which otherwise consists of yellow pine 

 (ponderosa), white pine (flexilis), Douglas fir and California 

 white fir (Abies concolor). Between the deserts and forests there 

 is invariably found a belt showing pinons and scrub oaks. Tim- 

 ber species are generally wanting on mountains less than 7,000 

 feet high. 



4. Forest ownership: The United States reserves aggre- 

 gate, in 1902, 6,740,000 acres. Large Indian reservations, notably 

 the Moqui and Navajo, in the northeast and in the White Moun- 



