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GEOLOGY OF THE NARRAGANSETT BASIN. 



I am of the opinion that, were the several horizons of shales explored 

 for fossils, a sufficiently differentiated flora would be found on which to 

 base a more satisfactory subdivision of the great middle series of sandstones 

 and shales than is here proposed on purely physical grounds. 



Tabular view of the strata in the Narragansett Basin. 



