310 



NEW YORK STATE MUSEUM 



Churchville Oil & Natural Gas Co., 



191 

 Clark Bros. Quarry Co., Fancher, 



276 

 Clark, Conroy & Co., Norwich, 279 

 Claspka Mining Co., 74 

 Clay, crude, 8, 9-1 1 

 Clay materials, 47-64; production, 



54; references, 64 

 Clay products, 7, 9-1 1 

 Clays, 20, 21, 237 

 Cleary, John I., Albion, 276 

 Clinton formation, 19, 53, loi, 188, 



191 

 Clinton hematites, 130, 157 

 Clinton limestones, 105, 166, 262 

 Clinton sandstone, 276 

 Clinton shales, 180 

 Coal, futility of looking for in New 



York, 23 

 Coastal plain province, 20 

 Cobleskill dolomite, 217 

 Cobleskill limestone, 263 

 Coeymans formation, 265 

 Columbia Pipe Line Co., 205 

 Conglomerates, 19 

 Connor, M. L. & Son, Walton, 278 

 Consolidated Rosendale Cement Co., 



44 

 Copper, 303 



Core sands, 235, 241 



Corkings, P., 232 



Corniferous limestone, 266 



Cortlandt series, 67 



Corundum, 17 



Crown Point Spar Co., 72 



Crushed stone, 249, 255, 256, 260, 



266, 267, 274, 279, 280 

 Crystalline limestone, 150, 255, 256- 



58, 269, 299 

 Curbstone, 248, 249 



Dannemora Granite Company, 253 

 Delft, 64 



Deposit Stone Co., 278 

 Devonian limestone, 265 

 Devonian sandstone, 272, 276 

 Diabase, 15, 20, 250, 280 

 Diatomaceous earth, 8, 22, 64-66; 

 references, 66 



Diopside, 299 



Dolomites, 255, 258, 271 



Dominion Co., 288, 293, 295, 296, 



297 

 Dominion Natural Gas Co., 183, 184 

 Dover Marble Co., 271 

 Drain tile, 47, 51, 52 

 Draper & Porter, 232 

 Drift, 21 

 Drumlins, 21 

 Dutchess County Lime Co., 271 



Earthenware, 51, 52, 63 



Ebsary Gypsum Co., 99 



Electrical supplies, 51, 63 



Ellenville Zinc Co., 305 



Emery, 8, 9-1 1, 66-69; references, 69 



Emery Pipe Line, 205 



Empire China Works, 63 



Empire Coarse Salt Co., 232 



Empire Gas and Fuel Co., 175 



Empire Gypsum Co., 99 



Empire Portland Cement Co., 40, 192 



Empire State Granite Company, 252 



Empire State Zinc Co., 305 



Enamel ware, 71 



Epidote, 122 



Eupyrchroite, 27 



Eureka Salt Co., Saltvale, 232 



Fair Haven Iron Co., 131 



Fallkill Iron Co., 125 



Feldspar, 8, 9-1 1, 15, 17, 69-77, 150 



153, 210, 213; references 76 

 Ferro-silicon, 219 

 Filter sands, 22, 241 

 Fire brick, 47, 49, 52 

 Fire sands, 22, 235, 241 

 Fireproofing, 47, 51, 52, 59 

 Flagstone, 248, 249, 273 

 Flake Graphite Co., 89 

 Fluorite, 15, 77-78, 150 

 Flux, 248, 25s, 256, 258, 260, 266 

 Fords Brook Pipe Line Co., 205 

 Fort Montgomery Iron Corporation, 



121 

 Franklin Iron Manufacturing Co., 



131 

 Front brick, 54, 59 

 Frost Gas Co., 178 



