8 NORTH AMERICAN GEOLOGY. [boll. 127. 



Louisiana. 



Maine. 



Maryland (Including District of Columbia). 



Massachusetts. 



Mexico. 



Michigan. 



Minnesota. 



Mississippi. 



Missouri. 



Montana. 



Nebraska. 



Nevada. 



New Hampshire. 



New Jersey. 



New Mexico. 



New York. 



North Carolina. 



Ohio. 



Oregon. 



Pennsylvania. 



Bhode Island. 



South America. 



South Carolina. 



Tennessee. 



Texas. 



Utah. 



Vermont. 



Virginias. 



Washington. 



West Indies. 



Wisconsin. 



Wyoming. 



II. STRATIGEAPHIO SUBJECTS. 



Archean and Algonkian (including all unclassified crystalline rocks), 

 with subheadings as follows : 



New England. 



New York, Pennsylvania, New Jersey. 



Maryland to Alabama. 



Great Lakes region (Michigan, Wisconsin, Minnesota, and Canada 

 contiguous to lakes Superior and Huron). 



West of the Mississippi Eiver (excepting Minnesota). 



Eastern (and northern) Canada. 



Western Canada (Lake of the Woods region to the Pacific). 



General. 

 Cambrian, with subheadings as follows : 



New England. 



