202 



Sierra Club Bulletin. 



Rocky Mountains — the ranges of Montana, Idaho, Wyoming, 

 Colorado, New Mexico, and western Texas. 



Plateau Region — the plateaus of the Colorado River and its 

 branches, limited on the east by the Rocky Mountains, on the 

 west by the Wasatch Range, and extending from the southern end 

 of the Wasatch southward, southeastward, and eastward to the 

 eastern boundary of Arizona, following the escarpment of the 

 Colorado Plateau, and including on the north the Green River 

 Basin. 



Basin Ranges — all those lying between the Plateau Region on 

 the east, the Sierra Nevada and Cascade Range on the west, 

 and the Blue Mountains of Oregon on the north, including the 

 Wasatch and associated ranges. 



PaciHc Ranges — the Cascade Range, the Sierra Nevada, and 

 the coast ranges collectively. 



Sierra Nevada — limited on the north by the gap south of Lassen 

 Peak, and on the south by Tehachapi Pass. 



Cascade Range — limited on the south by the gap south of 

 Lassen Peak and extending northward into British Columbia. 



Coast Ranges — extend northward into Canada and southward 

 into Lower California, and include all mountains west of Puget 

 Sound and the Willamette, Sacramento, and San Joaquin valleys, 

 and southwest of Mohave Desert. 



Bitterroot Range — extends from Clarke Fork on the northwest 

 to Monida, the crossing of the Oregon Short Line, on the south- 

 east, including all mountain spurs. 



Mission Range — range east and southeast of Flathead Lake, 

 Montana. 



Wasatch Range — includes on the north the Bear River Range, 

 -extending to the head of Bear River at Soda Springs, Idaho, and 

 on the south extends to the mouth of San Pete River, near Gun- 

 nison. 



San Juan Mountains — include all the mountains of southwest 

 Colorado south of Gunnison River, west of San Luis Valley, and 

 east of the Rio Grande Southern Railroad. 



Sacramento Mountains — include those groups known as Jica- 

 rilla. Sierra Blanca, Sacramento, and Guadalupe. 



Salmon River Mountains — include the group in central Idaho 

 lying south of main Salmon River, west of Lemhi River, north 

 of Snake River, and east of the valley of Weiser River. 



Blue Mountains — include all the mountains of northeastern 

 Oregon with the exception of the Wallowa Mountains, and ex- 

 tend into Washington. 



