CLASSIFIED    KEY    TO    THE    INDEX.  387 
Page. 
Economic  geology — Continue*  1 . 
Vermont „ 477 
Virginia 477 
Washington 477 
West  Indies 478 
West  Virginia ' 478 
Wisconsin 478 
Wyoming 479 
General 479 
Economic  products  described 482 
Florida 495 
Geologic  formations  described 495 
Geologic  maps 544 
Georgia .%. 546 
Glacial  geology : 547 
Alaska 547 
Appalachian  region 547 
Atlantic  coast  region 547 
Canada ■    547 
Great  Basin  region 547 
Great  Lakes  region 547 
Great  Plains  region 548 
Mississippi  Valley  region 548 
New  England  and  New  York -. 549 
Ohio  Valley  region .  550 
Pacific  coast  region 55<  I 
Rocky  Mountain  region 550 
( i  eneral 550 
Greenland 551 
Guam 551 
Guatemala 551 
Hawaiian  Islands 551 
Honduras . 552 
Hydrology 552 
Appalachian  region : 552 
Atlantic  coast  region 552 
Canada 552 
Great  B.> sin  region 552 
Great  Lakes  region 552 
Great  Plains  region 552 
Gulf  region 553 
Hawaiian  Islands 553 
Lake  Superior  region 553 
Mexico 553 
Mississippi  Valley  region 553 
New  England  and  New  York 554 
Ohio  Valley  region 554 
Pacific  coast  region 554 
Rocky  Mountain  region 554 
Southwestern  region 554 
West  Indies 555 
General -  - 555 
Idaho -  -  -  555 
