62 BULLETIN 415, U. S. DEPARTMENT OF AGRICULTURE. 



6. Dense salal or brush -covered slopes in the Coast region indicat- 

 ing good soil and moisture conditions, but keen competition. 



7. Brush-covered, northerly slopes in the eastern part of the Siski- 

 you Mountains at elevations of from 1.500 to 5,000 feet with soil 

 moisture conditions variable but usually fair, and cover of Califor- 

 nia black oak, Oregon grape, manzanita, ceanothus, and willow on the 

 better sites, and tan oak, chinquapin, huckleberry, live oak, and 

 ceanothus on the poorer sites. Douglas fir should be planted in mix- 

 ture with western yellow and sugar pines. 



NOBLE FIR. 



(1) Sites between 2,500 and 4,500 feet on the west side of the Cas- 

 cade Mountains, except in southern Oregon. On these sites the soil 

 may be thin and rocky, but the moisture conditions are usually good. 

 Noble fir should be planted in mixture with Douglas fir. 



(2) Sites above 4,500 feet on the west side of the Cascade Moun- 

 tains. On these sites the soil is usually thin and rocky, but the mois- 

 ture conditions good. Noble fir should probably be planted in mix- 

 ture with Amabilis fir. 



• WESTERN YELLOW PINE. 



(1) Occasional north slopes at moderate altitudes in the Blue 

 Mountains, with good soil and moisture. 



(2) Light brushy south slopes in the eastern portion of the Siski- 

 you Mountains with fairly good but rather warm and dry soil and 

 a cover of tan oak, chinquapin, huckleberry, live oak, and ceanothus. 

 Sugar pine may be planted with western yellow pine on the better 

 soils. 



(3) South slopes at low altitudes in the Blue Mountains, typically 

 hot and dry. 



(4) Serpentine slopes in the Siskiyou Mountains at an elevation 

 of from 4,000 to 5,000 feet, with typically dry and infertile soils and 

 a cover usually of tan oak, saddler oak, manzanita, huckleberry, 

 knob-cone and lodgepole pines. Such sites are very difficult to plant, 

 and it is impracticable to plant them for many years to come. 



