The Western Coast regions younger than the Rocky Mountains
and Appalachians, 91--An outlying Continent, 91--The rise
of the West Coast, 92--The rocks and minerals of the
Cascade Mountains, 93--The metamorphic rocks of doubtful
origin, 93--The coal beds, 94--The volcanic mountains and
their great activity, 95--The wonderful cañon of the
Columbia River, 96--The great sheets of basalt, 96--Origin
of the rich soil of East Washington, 97--The volcanoes not
wholly extinct, 98--Glacial drift, 98.