J X DEX 



171 



l\loriah, ii, 93, 141; titaiiiferou^ 



ores, 146. 

 Moriah Center, 11, 82, 93. 

 ]^Ioriah Corners, 11, 150. 

 Moriah marble, 2^, 150, 151. 

 Morley, E. W., anal3-ses by, 3.', 



46, 60. 

 ]\loss ponds, 16. 

 Mt Tom, 146. 

 ^lullen bay, 69, 72, 73, 74. 

 ]Mullen brook, 74, 88, 89, 90. 

 iNlunroe, H. S., cited, 129. 



Nason, F. L., cited, 105, 164. 



New Pond, 14, 43. 



New Pond type, areal distribu- 

 tion, 87. 



New Russia, 11, 18, 35, 37, 86, 95, 

 134, 136; small pits near, 135. 



Newland, D. H., cited, 134, 135, 

 164. 



Nichols Pond magnetite, i;^2-S3. 



Nicholson, H. A., cited, 73. 



Nigger Hill mine, 134-35- 



Nippletop, altitude, 12. 



Noble mine, 133-34. I35- 



Norite, 54. 



Norton, S., acknowledgments to. 

 105; cited, 164. 



Oak hiil, 35, 130, 148. 



Oak hill pit, 145-46. 



Ogilvie, I. H., cited, 17, 18, 95. 

 164. 



Old bed ore bodies, 106, 122, 125, 

 126. 128, 129; figures, 107, 109, 

 III, 113, 115, 117, 119, 121, 123. 



Oligoclase, 29, 123, 125, 155. 



Olivine, 54, 60, 62, 138, 140, 141, 

 142, 143, 144, 145. 146; occur- 

 rence, 159. 



O'Neill shaft, 106, 120, 122. 



Ophicalcite, 23, 150. 



Ophileta, 66. 



Orchard-gneiss, 123. 



Orthidium lamellosum, 69. 



Orthis costalis, 66. 

 platys, 69. 



Orthoceras sp. ind., 70. 

 rectiannulatum, 72,. 



Orthociase, ZZ, 34, 36, 39, 4i, 46, 

 50, 51, 56, b2, 80, loi, 123, 124, 

 125, 140, 145, 146, 155. 



Paleocystites tenuiradiatus, 70. 

 Paleozoic strata, 62-74; faults in, 



75; areal distribution, 88-92. 

 Parastrophia hemiplicata, 72,, 74- 

 Pease quarries, 23, 150. 

 Peet, C. E., cited, 93, 96, 164. 

 Pegmatite, 26, 28, 12^-26, 149. 

 Penheld pond, 82. 

 Phlcgopite, occurrence, 159. 

 Phosphorus, percentages of ores 



in, 147. 

 Phylloporina incepta, 66. 

 Ph3^siography, 11-20. 

 Phytopsis tubulosus, 72. 

 Pilfershire, 23. 82,. 103. 

 Piifershire mines, 78, 105. 

 Pirsson, L. V., cited, 2>^. 

 Pitkin bed, 135. 

 Plaesiomys plat^^s, 69, 70, 71. 

 Plagioclase, 26, 27, 28, 29, 30, 31, 



2>2>, 34. 36, 39, 41- 43, 46, 52, S2>, 



54, 60, 80, loi. T05, 122, 123, 139. 



140, 142, 144, 145, 146, 159. 

 Pleasant valley, 14, 19, 144. 

 Plectoceras sp. ind., 70. 



sp. (probably undatus), 72,- 

 Plectorthis plicatella, 72,. 

 Pliomerops canadensis, 70. 

 Port Henry, ir, 14, 62, 63, 75, 82, 



88, 89, 99, 150. 



Port Henry quadrangle, area, 10. 



Porter, altitude, 12. 



Potash, 30, 51, S2. 



Potsdam, 64. 



Potsdam quartzite, 94. 



Potsdam sandstone, 21, 62-65. 75, 



89, 90, 91. 



Precambric formations, 21; faults 



in, 76. 

 Ptychoparia mxinuta, 64. 

 Pumpell}', R.. cited, 165. 

 Putnam, B. T., cited, 79, 100, 104, 



134. 135. 164. 

 Putnam mine, 134. 

 IVrite, occurrence, 159. 

 Pyroxene, 22, 28, 30, 31, 2^, 39, 43, 



