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XIII. Precambrian Gneiss, Gorge of the Hudson River, Luzerne, 



Warren county, and Hadley, Saratoga county 140 



XIV. Precambrian Rocks, Adirondack Mountains, Avalanche 



Lake, Essex county 140 



XV. Precambrian Rocks, North End of Willsboro Tunnel, shore of 



Lake Champlain, Essex county 140 



XVI. Precambrian Marble, E. E. Stevens' Quarry, three miles 



south of Canton, St. Lawrence county 140 



XVII. Precambrian, Empire Marble Co.'s Quarry, near Gouverneur, 



St. Lawrence county 140 



XIX. Precambrian Gneiss, Dodge Farm, Macomb, St. Lawrence 



county. Potsdam Sandstone Resting Unconformably upon, 144 

 XX. Precambrian Gneiss, Hudson River, near Jessup's Landing, 

 Saratoga county. Potsdam Sandstone Resting Unconform- 

 ably on 144 



XXIV. Precambrian Crystalline Rocks, Mosherville, Saratoga 



county, Potsdam Conglomerate on 144 



XXV. Precambrian Crystallino Schists, West Shore R. R. Cutting, 

 one mile west of Downing Station, Montgomery county. 



Calciferous sandrock Resting on 146 



CV. Precambrian. Granite Quarry, Round Island, near Peekskill, 



Westchester county 182 



CVIII. Precambrian, Interior of Northern New York Marble Co.'s 



Quarry, near Gouverneur, St. Lawrence county 198 



Cambrian, 



XVIII. Potsdam Sandstone, Quarry of Merritt & Tappan, three 



miles south of Potsdam, St. Lawrence county 144 



XIX. Potsdam Sandstone, Resting Unconformably upon Precam- 

 brian Gneiss, Dodge Farm, Macomb, St. Lawrence county, 144 

 XX. Potsdam Sandstone Resting Unconformably on Precambrian 

 Gneiss, Hudson River, near Jessup's Landing, Saratoga 



county 144 



XXL Potsdam Sandstone. Hell Gate, Ausable Chasm, Clinton 



county 144 



XXII. Potsdam Sandstone, Grand Flume, Ausable Chasm, Clinton 



county 144 



XXIII. Potsdam Conglomerate, Mosherville, Saratoga county. Glaci- 



ated Surface of 144 



XXIV. Potsdam Conglomerate on Precambrian Crystalline Rocks, 



Mosherville, Saratoga county - 144 



CVI. Potsdam Sandstone, Clarkson's Quarry, three miles south of 



Potsdam, St. Lawrence county 188 



