ILLUSTRATIONS 



Pag6. 

 Plate I. Landscape looking westward across the upper portion of Narragansett Bay, in the low- 

 land of the Carboniferous area, to the base-leveled area of mainly crystalline and pre- 

 Carboniferous rocks 7 



Fig. 1. Diagram of assumed conditions of compressive strain in rocks in a basin of accumula- 

 tion 19 



2. Theoretical plan of the great folds of the Narragansett Basin 27 



5 



