101 



Continuation of Column No. 4. 

 TABLE IV. 



| 8th Clinton or Protean Group, 



Limestone and Green Shale, Rochester, Lockport. 



Pentamerus Oblongus Limestone,. Rochester. 



Oolitic Iron Ore, " 



Green Shale, " 



9th ShaWailJUnk GrOUp, Shawanjunk Mountains. 



Oneida Conglomerate, Oneida Lake. 



iEsopus Millstone. 



10th Hudson River Group, 



Medina Sandstone, = Medina. 



Salmon River Sandstone, Turin. 



Pulaski Shales,.... 



Frankfort Slate, 



Hudson River Slate, Coeymans, Norman's Kill. 



Fragmentary Limestone, Opposite Albany. 



11th Black River Group, 



Black Slate or Shale,. Albany, Cahoes Falls, Turin. 



Utica Slate, 



Trenton Limestone, Trenton Falls. 



Bird's-Eye Limestone, 



Trenton Slate, Turin, Trenton Falls. 



12th Champlain Group, 



Mohawk Limestone, | Amsterdam Glenn's Falls, Louis- 



) ville, Saratoga. 



Fucoides Layers, ..... 



Calciferous Sand rock, — Noses on Mohawk R., Middleville. 



13th Potsdam Sandstone, 



Potsdam, Keesville. 



Volcanic Rocks, 



~| At Northfield, State nlsland. At and! 



Trap or Greenstone, | from Bergen Hill, New Jersey, to; 



Basalt, J-Harvestraw on the Hudson River, < 



Sienite, | atPaterson, N. J., New Haven, Ct., 



J Subterranean Wall, N. Car. 



Primitive Slaty Rocks, j 



G • ~1 Island of New York, Westchester, > 



VTivi I'lot-o I Putnam and Rockland Counties, 



wirnhiirwfi QiiVo > Highlands in Orange Co, Trenton, 



Hornblende Slate, i xt i ™ • »f „* di,;i„j„i s 



T„V„ S fi Slat* _...' N - Jers ev. Fair Mount Phladel., 



J most of the New England States. 



Talcose Slate, 



Primitive Crystalline Rocks, 



■) Underlays Staten Island and part 



Granite, | of Long Island, at Hallet's Cove, 



Porphyry, )■ Island of New York, Highlands. 



Sienite, | N. York, and in all the New Eng- 



J land States. 



