INDEX 



The superior figure tells the exact place on the page, in ninths; e. g. 328 4 means 

 four ninths of the way down page 328. 



Adirondack pass, cliffs, 328 4 . 



Adirondacks, previous study of geol- 

 ogy, 325 1 -26 6 . 



Analyses, table, 340 3 . 



Anorthosites, term, 327 8 ; dome-shaped 

 peaks, 327 7 ; distribution, 327 8 ; pe- 

 trography of, 336 5 -38 4 . 



Apatite, mining of, 342 9 . 



Avalanche lake, shear-zone at, 328 4 . 



Avalanche pass, cliffs, 328 4 . 



Bald peak, gabbros, 331 9 . 



Barton hill, altitude, 341 8 , 345 s ; fault- 

 scarp, 345 3 ; gneiss, 344 6 ; 



mines; 340 2 , 341 8 , 345 2 -46 7 ; bes- 

 semer ores, 339 8 . 



Bibliography of Adirondack geology, 

 325 5 -27 3 . 



Birkinbine, John, paper on crystalline 

 magnetite in Port Henry mines, 

 345 6 . 



Black schists, petrography of, 333 s - 

 36 5 . 



Blake, W. P., quoted, 342 9 . 

 Bonanza- Joker bed, 343", 344 4 . 

 Brinsmade shaft, 342 3 . 

 Bullwagga mountain, mines on, 348 7 . 

 Burt lot mines, 340 2 , 345 8 , 346 3 . 

 Business prospects, 348 8 -49 1 , 350 5 . 



Calciferous limestone, 330 9 , 331 7 , 332 3 , 

 338 s . 



Cambro-Silurian sediments, 339^ gen- 

 eral character, 330 7 . 



Campbell hill mines, 349 6 . 



Champlain lake, geology of west 

 shore, 327 4 ; Potsdam sandstone, 

 331 7 . 



45 



Chazy limestone, 330 9 , 332 3 . 

 Cheever dock, brecciated gneiss at, 

 332 9 -33 4 . 



Cheever mine, 347 2 -48 5 ; gabbros under- 

 lying, 33 1 9 ; limestone, 334 3 ; faults, 

 340 7 . 



Contours, origin, 328 2 . 



Coot hill mines, 339\ 34 8 7 . 



Crowfoot pond, 339 9 . 



Crystalline limestone, distribution, 

 328 1 ; general character, 329 8 -30 8 . 



Crystalline limestones of eastern Adi- 

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

 326 5 . 



Crystalline magnetite in Port Henry 

 mines, paper on, referred to, 346 s . 



Crystalline rocks, stratigraphy, 325 6 , 

 328 8 -29 4 . 



Derby, O. A. , paper on magnetite ore 

 districts of Jacupiranga and Ipane- 



ma, 350 9 . 



Dikes, 332 1 , 338 6 , 340 T ; remains in 



limestone, 330 2 , 335'-36 4 ; near West 



Point, 335 9 . 

 Dip, distinguished from pitch, 341 1 . 

 Dome-shaped peaks, composition, 327 7 ; 



origin, 328 3 . 

 Drift, distribution, 328 6 . 

 Dynamic disturbances, evidence of. 



332 8 -33 2 , 335 1 , 336 7 . 



Edwards, A. M., on Warren county 



marbles, 334 5 . 

 Elizabethtown, mines, 345 9 -46 1 . 

 Emmons and Hall, survey, 325 4 . 

 Ensign pond, 331 7 , 334 3 ; anorthosites, 



326 6 . 



