6o 



NEW YORK STATE MUSEUM 



Maps, 53-58 



Martin, Dr, acknowledgments to, 5 



Morley, 25, 26, 30 



Nettle creek, 30 

 Newland, D. H., cited, 18 

 Norwood, 26, 27, 30, 31, 37 



Ogdensburg dolomite, 8, 36-39 

 Ophileta compacta, 31 



complanata, 30, 31 



levata, 31, 38 

 Orthis pectinella, 40 

 Orthoceras brainerdi, 38 



compacta, 38 



complanata, 38 



montrealensis, 38 



tenuiseptum, 38 

 Oswegatchie river, 25, 26 



Palaeophycus beverleyense, 29 



Paleozoic record, 42-47 



Phelps, Mrs C. S., acknowledgments 

 to, 5, 14 



Phelps, Prof. C. S., acknowledg- 

 ments to, 5 



Pierrepont, 15 



Pleurotomaria hunterensis, 30 



Polygyrata complanata, 31 

 hunterensis, 30 



Polytoechia apicalis, 39 



Postglacial shorelines, 50 



Potsdam sandstones, 8, 11^16, 43 



Potsdam village, 21 



Preglacial erosion and drainage, 49 



Proterocameroceras brainerdi, 38 



Pyrites, 14 



Raquette river, 7, 24, 26, 30, 31, 32 

 Raquette valley, 33 

 Raymond, Dr P. E., cited, 41 

 Rensselaer falls, 21 



1 



Rhynchotrema inaequivalve, 39 



increbescens, 39 

 Ruedemann, Dr, acknowledgments 



to, 5; cited, 10 



Sandstones, 52 



Scolithus canadensis, 28 



Shaw, Eugene Wesley, cited, 48 



Shea, John A., acknowledgments to, 



5 



Sissonville, 21, 26, 27, 28, ;i2 

 Sissonville dam, 24 

 Slab City, 26 

 Smock, cited, 18 

 Smyth, cited, 18 

 Stictopora elegantula, 40 

 Stony brook, 26 

 Stony Brook falls, 28 

 Stratigraphy, resume of, 41 

 Surface geologj^ 48-52 

 Syntrophia lateralis, 38 



Theresa mixed beds, 8, 24-26, 36 

 Trenton limestone outlier, 8, 39 

 Tribes Hill beds, 9, s^, 4i 

 Triplesia lateralis, 38 

 Trout brook, 7, 26, 31, 32, 3^, 38, 39 



Ulrich, Dr, acknowledgments to, 5 ; 

 cited, 9, 27, 36, 37 



Van Rensselaer creek, 15 

 Vanuxem, cite"', 18 

 Veitch, Alexander, acknowledgments 

 to, 5 



Waterman hill, 14, 20 

 Waterman Hill drumlin, 6 

 West Potsdam, 21, 25, 31 

 Winchell, cited, 18 

 Wind work, 52 



