172 



New York State Museum 



46, 47, 48, SI, 57, 62, 105, 138, 



139, 140, 145, 146, 149; occur- 

 rence, 159. 



Pyroxenic anorthosites, 31. 

 Pyrrhotite, 22, 40, 41, 47, 50, 56, 



140, 144, 145, 146; occurrence, 

 160-61. 



Quartz, 22, 25, 26, 27, 30, 33, 34, 35. 

 36, 40, 41, 45, 46, 47, 48, 50, 51, 

 52, 63, loi, 123, 124, I2S, 126, 

 133; as a geological thermome- 

 ter, 130; occurrence, 161. 



Quartzite, included m anorthosite, 

 figure, 34. 



Rafinesquina alternata, 69, 70. 



champlainensis, 70, 71. 



incrassata, 69, 70, 71. 

 Raphistoma lenticulare, 73. 



stamineum, 71. 



striatum, 70, 

 Raven hill, 13, 31. 

 Raymond, P. E., cited, 67, 69, 70, 



72, 72, 165. 

 Redfield, altitude, 12. 

 Reed quarry, 152, 

 Rhinidictya fenestrata, 70. 

 Ries, Heinrich, cited, 19, 126, 154, 



160, 165; analysis by, 160. 

 Roaring brook, 20, 54, 93, 135. 

 Rocky Peak ridge, 12. 

 Ross ore bed, 136, 145. 

 Rossi, A. J., cited, 149. 

 Rutile, 35; occurrence, 161. 



Saddleback, altitude, 12. 

 Sand, 95, 151. 

 Sand dunes, 20. 

 Sanford pit, 106. 

 Saussurite, 28. 

 Sawteeth, altitude, 12. 

 Scapolite, 22, 125, 146, 161. 

 Schist, 149. 



Schroon river, 16, 18, 20, 62. 

 Schroon valley, 96. 

 Schuchert, Charles, cited, 73. 

 Seely, H. M., cited, 65, 67, 91, 163. 

 Serpentine, 23, 62, 149; occurrence, 

 161. 



Serpentinous marble, 151. 



Shelburne point, 94. 



Sherman mine, 106, 120. 



Siderite, occurrence, 161. 



Silica, 35, 56. 



Sillimanite, 25. 



Skylight, altitude, 12. 



Slide brook, 86. 



Smith, H. P., cited, 165. 



Smith mine, 106, 120, 122, 124, 126. 



Smock, J. C, cited, 132, 133, 135, 

 165. 



Smyth, C. H., jr, cited, 19, 44, 124; 

 figures drawn by, 162. 



Spinel, 29, 56, 140, 143, 145. 



Split Rock, 144, 147, 148. 



Split Rock falls, 17, 18, 37. 



Split Rock falls type, areal dis- 

 tribution, 86. • 



Split Rock mine, 138-40. 



Split Rock mountain, 84. 



Split Rock point, 84. 



Spotted mountain, 13. 



Stacy brook, 66, 84, 94. 



Standish, 99. 



Steele ore bed, 84, 98, 136-38; fig- 

 ure, 137. 



Steiger, George, analyses by, 35, 



37, 55, 145- 

 Stevens brook, 34. 

 Stevenson farm, 89. 

 Stoltz, G. C., acknowledgments to, 



105. 

 Stream terraces, 20, 

 Stromatocerium, 73. 



rugosum, 73. 

 Strophomena incurvata, 73. 

 Structural geology, 75~79- 

 Sulfur, percentages of ores in, 



147- 

 Syenites, 44-52, 81, 123, 124, 126, 

 129, 135; analyses, 45, 49; areal 

 distribution, 87; relation of gab- 

 bros to, 127. 



Taylor, F. B., cited, 19, 165. 

 Teall, J. J. H., cited, 24. 

 Tef¥t shaft ore body, 128. 

 Tetradium cellulosum, 72, 73. 

 Thaleops arctura, 70, 71. 



