INDEX 



375 



Fire brick, production of, 19 

 Fischer, Moritz, cited, 265 

 Fish remains in Devonian of Iowa, dis- 

 tribution of, 48 

 Fishes, advent of, 53 

 characters of, 95 

 classification of, 65, 67, 69 

 development of, 64, 67 

 Devonian, of Iowa, 33 

 systematic account of, 70 

 work of C. R. Eastman on, 4 

 evolutionary history of, 51 

 fossil, lists of, 275 

 origin of, from Enteropneusta. 52 

 Silurian, character of, 59 

 Flagging, production of, 23, 24 

 Foerste, A. F., cited, 265 

 Fossil fishes from Lower Devonian of 

 North America, list of, 275 

 from Middle Devonian of North 



America, list of, 276 

 from Upper Devonian of North 

 America, list of, 280 

 Fourmaier, P., cited, 227 

 France, fish remains in, 104 

 Frankfort, Germany, fish remains at, 



167 

 Franklin, New York, fish remains 



from, 131, 241, 287-289 

 Franklin county, Ohio, fish remains 



from, 285 

 Freeh, cited, 275 

 Friendship, New York, fish remains 



from, 155 

 Fritsch, mentioned, 101 

 Fuels of Iowa, investigation of, 1 

 Furbringer, K., cited, 165, 186, 208 



G 



Gamphacanthus, 137, 138 

 Gampliacanthus politus, 138 

 "Ganoids", 66 



characters of, 236 



Palaeozoic, absence of ossified centra 

 in, 147 

 Ganorhynchus beecheri. 213, 214, 225, 

 288, 289 

 suessmilchi, 235 



similarity of, to Scaumencia, 227 

 Garman, S., cited, 137, 142 

 Garpike, 63 



Gas, natural, in Iowa, 2 



Gaskell, W. H., cited, 74 



Gaspe, Quebec, fish remains from, 275, 



276 

 Gaspe series, fish remains in, 114, 276, 



278 

 Genesee Black shale, fish remains in, 



111, 135, 179, 198, 199, 207, 268, 



277, 279, 281, 282 

 Geneva, New York, fish remains from, 



278 

 Genundewah, New York, fish remains 



from, 198 

 Germany, fish remains in, 104, 119, 167 

 Gerolstein, Prussia, fish remains from, 



246 

 Gill, Theodore, mentioned, 159 

 Girty, G. H., cited, 110, 265 

 Glen Park, Missouri, fish remains 



from, 138, 149 

 Glen Park limestone, fish remains 



from, 137, 149 

 Glenville, New York, fish remains 



from, 260 

 Glyptaspis, dentition of, 181 



relations to Mylostomids, 207 

 Glyptaspis abbreviata, 282 



verrucosa, 285 

 Glyptolepis quebecensis, relations to 



Holoptychius, 238 

 Glyptopomus sayrei, 290 

 Goethe, cited, 29, 32, 33, 70 

 Goniatite limestone. New York, list of 



fossil fishes from, 281 

 Gorgonichthys clarki, 284 

 Gravels, Iowa, ages of, 3 

 production of, 13, 26 

 quality of, for road materials, 3 

 uses of, on roads, 3 

 Greenland, fish remains from, 239 

 Grundy county. Illinois, fish remains 



from, 254 

 Grundy county, Iowa, work in, 4 

 Gudger, E. W., cited, 218 

 Gurich, cited, 188 

 Gypsum, production of, by years, 13 



classified, 27 

 Gyracanthides, 113 

 GyracantTiides murrayi, 114 



