PAET III. 



COUNTY AND REGIONAL GEOLOGY. 



Under this head those portions of the State which have 

 been examined since the present organization of the State 

 Geological Survey are, as far as practicable, subdivided into 

 regions that have common geographical characters, for the 

 purpose of facilitating their description. A general descrip- 

 tion of each of these regions is followed by separate and 

 more detailed descriptions of every connty within it, so far as 

 they have been examined. 



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