62 BULLETIN 475, U. S. DEPAETMENT OF AGEICULTURE. 
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 j^ellow and sugar pines. 
NOBLE FIE. 
(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 
m-ay be thin and rocky, but the moisture conditions are usually good. 
Xoble 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. 
