. Annual Reports of the Department of the Interior for the Fiscal Year Ended June 30, 1900--Twenty-First Annual Report of the United States Geological Society. -Northwestern bdniulai Kagland. 102 NEWARK SYSTEM OF POMPERAUG VALLEY, be determined from the southeastern margins of the exposures in bothtwins of Orenaug Hill (I, II), by the cliff bounding the eastern RaglandRidge on the west (II3), or In the western boundary of the exposuresin the western ridge of the same district (IV). Tlie N. ± 90^ E. series.—This series has been determined with lessaccurac} than most others, its direction
. Annual Reports of the Department of the Interior for the Fiscal Year Ended June 30, 1900--Twenty-First Annual Report of the United States Geological Society. -Northwestern bdniulai Kagland. 102 NEWARK SYSTEM OF POMPERAUG VALLEY, be determined from the southeastern margins of the exposures in bothtwins of Orenaug Hill (I, II), by the cliff bounding the eastern RaglandRidge on the west (II3), or In the western boundary of the exposuresin the western ridge of the same district (IV). Tlie N. ± 90^ E. series.—This series has been determined with lessaccurac} than most others, its direction being measured from a num-ber of cliff faces which are each a rod or less in length. These facesseem to be subordinate to those formed b} the faults of the four mostprevalent series. At each fault of this series which has been indicated upon the map, some clifftrending roughly east andwest has been observed. Thatthe direction given is approx-imately correct may be indi-cated l)y the fact that in someinstances lines continuing inthis direction from a point ofobservation correspond withtopographic or geologicbreaks, but this may be for-tuitous. Thus the fault (F)which marks the southernextension of East Hill corre-sponds farthe
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