CONTENTS. 



IX 



Page. 



Warren countt (continued). 



Serpentine marble, 176 



Graphite or black lead. 177 



Potsdam sandstone, 177 



Calciferous sandrock, 1 79 



Black marble of Glen's-Falls, 181 



Trenton Hmestone, 182 



Utica slate, 183 



Trap or igneous rocks, 184 



Peat, 185 



Superficial deposits, 186 



Waterfalls, 188 



Glen's-Falls, 189 



Simple minerals. 192 



Recapitulation, 193 



Essex county, 194 



Mountain ranges, 194 



Mr. Benedict's barometrical measure- 

 ments of the heights of the moun- 

 tains of Essex county, 195 



Valleys, 212 



Lakes, 213 



Drainage, 214 



Adirondack pass, 216 



Hji^ersthene rock, 221 



Granite, 225 



Primary lunestone, 225 



Hornblende and gneiss, 229 



' Magnetic oxide of iron 231 



Penfield ore bed, 23 1 



Saxe ore bed, 235 



Vein at Crag harbor, 236 



Walton vein and Sanford vein, 237 



Barnum vein and Hall's vein, 238 



Everest's vein, 240 



Magnetic ores of Adirondack, 244 



Sanford ore, 247 



Extract from Mr. Johnson's report of 

 experiments to test the value of the 

 iron manufectured at the village of 



Mclntyre, 256 



Advantages of Adirondack as a loca- 

 tion for the manufacture of iron. . . 260 



Essex county (continued). 



Trap, porphyry, or volcanic rocks, . . 263 



Potsdam sandstone, 268 



Fucoidal layers and Calciferous sand- 

 rock, 270 



Chazy limestone, . . . . , 272 



Trenton limestone, 277 



Utica slate, 278 



New- York system in Vermont, 279 



Tertiary of Essex county, 283 



Superficial deposit.s, drift, peat, etc. . . 284 



Simple minerals. 285 



Recapitulation, 287 



Clinton county, 280 



Mountain ranges, valleys, d«ainage,. 289 



Primary rocks, 290 



Arnold veins, 29 1 



Remarks on the ore of the Arnold vein, 293 

 On the -working of the Arnold and 



other veins'after Mr. Clay's plan,. 295 



Palmer vein, 300 



Cook veins, 301 



Battie ore, 303 



Rutgcr's vein and Winter ore, 304 



Mace, Burt, Jackson and Finch veins, 306 



McIntjTe vein, 307 



Fucoidal layers and Calciferous sand- 

 rock, 310 



Chazy limestone, 315 



Bird.?eye limestone, 317 ■ 



Black marble, 318 



Trenton limestone, 319 



Utica slate, 319 



Dip and strike of the rocks in Clinton, 320 

 Section of the Champlain group at 



Kighgate, Vt 321 



Tertiary beds of Clinton, 322 



Peat, drift, superficial covering, etc. . . 323 



Recapitulation, 324 



Franklin county, 325 



PruTiary rocks, 325 



Iron ores, 326 



Ores of Duane 32?" 



