INDEX. 
Page. 
Alluvial beds, 187 
Alluvions, 282 
Arsenical ores, • 105 
Black lead, 220 
Blunt's quarry, 82 
Changes of surface, &c 233 
Chemung group, 322 
Clays and sands, 76 
Clays, do 153 
Compact gray limestone, . 126 
Dark slaty shale, 290 
Direction of furrows, 198 
dykes, 238 
Erratic blocks, 159 
Fluviatile, or river alluvions, 72 
Geology of Clinton county, , 230 
Hamilton county, 224 
Warren county, , 234 
Seneca county, 290 
Ontario county, 304 
Yates county, 314 
Tompkins county, , 317 
Chemung county, 321 
Wayne county, 326 
Steuben county, 322 
Gray sandstone of Cayuga, , . . 246 
sparry crinoidal limestone, 274 
Graywacke, 143 
