354 



INDEX 



Eozoon formations, 334 5 . 

 Erosion, evidence of, 328 2 , 339 4 . 



Faults, in iron mines, 328 5 , 340 6 ; at 



Barton hill, 345 3 . 

 Fisher hill mines, 340 2 , 345 8 , 346 8 . 



Gabbros, term,327 9 ; general character, 



330 4 ; origin, 330 4 ; petrography of, 



336 5 -38 4 , 347«. 

 Gabbros on western shore of Lake 



Champlain, J. F. Kemp's paper on, 



326 5 . 



Garnets, characteristics. 332 6 , 337 2 , 346 5 . 

 Geologic history, probabilities, 338 8 - 

 39 4 . 



Gneisses, age, 330 s ; altitudes, 327 8 ; dip, 

 344 7 ; distribution, 328 1 ; general char- 

 acter, 329 4 ; petrography of, 332 3 -33 8 , 

 3446, 346 2 , 347 1 . 



Goff mine, 347 3 . 



Gouverneur township, geology, 326 7 j 

 limestones, 336 3 ; origin of gneisses, 

 329 6 . 



Hall, C. E. , Laurentian magnetite iron 

 ore deposits in northern N. Y , 325 7 , 



Hall, James, on stratigraphy of crystal- 

 line rocks, 325 6 . 



Harris hill, 331 8 . 



Hunt, T. S., on geology of Port Henry, 

 326 2 . 



Iron mines, faults, 328 5 , 340 6 . 

 Iron ore tract, 349 6 . 

 Iron ores, 339-50. 



Joker bed, 343 7 . 



Kemp, J. F., papers referred to, 326 5 , 

 328 9 . 



Lake bottoms, evidence of, 328 7 . 

 Laurentian magnetite iron ore deposits, 



paper by C. E. Hall. 325 8 . 

 Ledge hill mines, 349 7 

 Lee mine, 346M7 2 ; limestone, 334 2 ; 



ore, 339 7 . 



Leeds, A. R., notes on lithology of 



Adirondacks, 325 6 . 

 Lewis, James, mine, 348 5 . 



Limestone, age, 330*; petrography of, 

 333 8 -36 5 . See also Calciferous lime- 

 stone; Crystalline limestone. 



Lithology of Adirondacks, paper by 

 Dr A. R. Leeds, 325 6 . 



Little Orchard slope, 345 7 . 



Lovers hole mine, 340 6 , 345 6 , 346 2 . 



McKee, — , surveys, 344 1 . 



Map, description, 331 1 . 



Map of eastern Adirondacks, accom- 

 panying C. E. Hall's report, 325 8 . 



Matthew, W. D., acknowledgments 

 to, 327 3 . 



Merrill, G. P., quoted, 330 2 , 334 6 . 

 Millbrook, dikes, 338 6 . 

 Miller bed, 343 3 , 344 3 . 

 Mine 21, 343 5 , 344 4 . 



Mines, titan if erous and non-titanifer- 



ous, 339 6 ; bessemer and non- 



bessemer, 339 8 , 340 2 . 

 Mineville group, 341 8 -45* ; altitude, 



341 9 ; dikes, 338 7 ; gabbros, 331 9 ; 



gneiss, 333 5 ; silicates, 335 s . 

 Mining prospects, 348 8 -49 1 , 350 6 . 

 Moriah, outline of geology, 331 6 -32 1 ; 



anorthosites, 336 5 ; mines in, 339 6 , 



348 5 . 



Moriah Center, limestone, 334 2 ; min- 

 ing venture, 318 7 . 



Moriah Corners, dikes, 338'. 



Moriah marble, 330 1 . 



Mount Adam and Eve, silicates, 335 s . 



Mount-Bob, gabbros near, 331* ; gneiss, 

 333 5 . 



Mount Harris, anorthosites, 336 s . 



New bed, 345 5 . 

 Nichols pond mines, 349 2 . 

 Non-titaniferous ores, general feat- 

 ures, 341 2 ; mines producing, 339 6 . 

 North Hudson, limestone, 334 3 . 



Old bed, 342 5 -43 3 , 344 4 . 

 Orange county silicates, 335 5 . 

 Ores, bessemer and non-bessemer, 

 339 8 ,340 5 ; detailed geology, 341 8 -50 4 ; 

 granular, 340 8 ; 



non-titaniferous, general features, 

 341 2 ; mines bearing, 339 6 ; 



titaniferous, 310 4 , 350 6 ; general 

 features o 4« - 9 -4 1 2 ; mines bearing, 339 7 . 



