212 



NEW YORK STATE MUSEUM 



South Dover Marble Company, quar- 

 ries, ig6 



Specific gravity and vireight, 40 



Split Rock anorthosite area, 102 



Storm King gneissoid granite, 107 



Storm King mountain, quarries on, 

 109 



Strength of rocks, 32-33 



Strength of stones, 44 



Sufifern trap, 153 



Syenite, 51, 60-61, 82, 91 ; Ausable 

 Forks, 92-96; Diana-Pitcairn, 87- 

 89 



Syenite Trap Rock Company, quarry, 

 148 



Tensile strength, 44 

 Testing of stone, 33 

 Texture of rocks, 28-30 

 Thurso, quarries near, 73 

 Ticonderoga, pegmatite, 164 

 Toughness of stones, 42 



Trap, 63-64 ; dikes, 82 ; field occur- 

 rence, 69; Fort Ann, 149; Laden- 

 town, 152 



Trenton limestone, 55 



Tribes Hill limestone, 54 



Tuckahoe, marble, 201 



Turner's Corners, marble, 199 



Tyrell quarry, 168 



Verde antique, 205 



Wappinger limestone, 53 

 War of stones, 44 

 West Point gneiss quarries, 142 

 White, C. B., quarry, loi 

 White Lake, granite, 107 

 White Plains, marble, 200 

 Willsboro Point, limestone, 203 

 Wilson Brown quarry, 166 

 Wilton, granite, 103-5 

 Wingdale, marble, 196 



Yonkers gneiss, 53 



Yonkers gneissoid granite, 121-30 



