MAKYI,Ax\D GKOLOGICAL Sl'KVEY. 



PRINCE GEORGE S COUNTY, PLATE II. 



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FlG. 1. VIEW SHOWING IM>ri!ATEI) LEDGES OF THE PATI XEXT FORMATION. W STREET, NEAR 



TWFLITII STREET. WASHINGTON, 1). C. 



Fig. 2. — view showing flooded iron mine in the arundel foraiation near mi^irkirk. 



