16 CLASSIFIED KEY TO THE INDEX. [bull. 135. 
Page. 
Connecticut 112 
Correlation 113 
Cretaceous 113 
Atlantic Coastal Plain 113 
Gulf States 113 
Mississippi Valley 113 
Great Plains 113 
Rocky Mountain region 113 
Sierra Nevada and Pacific Coast region 113 
Mexico 113 
Miscellaneous 113 
Devonian 113 
Canada 113 
Appalachian region 113 
Mississippi Valley 114 
Rocky Mountain region 114 
Sierra Nevada and Pacific Coast region 114 
Dynamic geology , 114 
Economic geology 114 
Alabama 114 
Arizona 114 
Arkansas 114 
California 115 
Canada 115 
Colorado 115 
Georgia 115 
Indiana 115 
Iowa 115 
Irrigation 115 
Kentucky 115 
Maryland 115 
Minnesota 115 
Missouri 115 
Montana 115 
New Jersey 115 
New Mexico 115 
New York 115 
Ohio 115 
Pennsylvania 115 
South Dakota 115 
Tennessee 115 
Texas 115 
Utah 115 
Virginia 115 
West Virginia 115 
Wisconsin 115 
Wyoming 115 
Miscellaneous discussions 115 
Economic products described 116 
Florida 117 
Georgia 117 
Glacial geology 117 
Alaska 117 
Canada 117 
