CONTENTS. 
Page. 
Warren county (continued). 
Serpentine marble,. 176 
Graphite or black lead,. 177 
Potsdam sandstone,. 177 
Calciferous sandrock,. 179 
Black marble of Glen’s-Falls,. 181 
Trenton limestone,. 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 
Hypersthene rock,. 221 
Granite,. 225 
Primary limestone,. 225 
Hornblende and gneiss,. 229 
Magnetic oxide of iron,. 231 
Penfield ore bed,. 231 
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 manufactured at the village of 
McIntyre,. 256 
Advantages of Adirondack as a loca¬ 
tion for the manufacture of iron,.. 260 
ix 
Page. 
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 deposits, drift, peat, etc... 284 
Simple minerals,. 285 
Recapitulation, . 287 
Clinton county,... 289 
Mountain ranges, valleys, drainage,. 289 
Primary rocks,. 290 
Arnold veins, . 291 
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 
Rutger’s vein and Winter ore,. 304 
Mace, Burt, Jackson and Finch veins, 306 
McIntyre vein,. 307 
Fucoidal layers and Calciferous sand- 
rock, . 310 
Chazy limestone,. 315 
B irdseye 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 
Highgate, Vt. 321 
Tertiary beds of Clinton,. 322 
Peat, drift, superficial covering, etc... 323 
Recapitulation,. 324 
Franklin county, . 325 
Primary rocks,. 325 
Iron ores,. 326 
Ores of Duane,. 327 
