INDEX TO MUSEUM BULLETIN 19 



249 



Elephant, fossil, 178 6 . 



Emeralds, 1228. 



Emery, 122?, 2266. 



Emmons, Ebenezer, geologist, 241 8 ; 

 statement quoted, 110 4 ; geologic re- 

 port, 2366. 



Encrinal limestone, 163 4 . 



Eustatite, 1222. 



Entomologist, state, appointed, 244 7 . 



Envelopes of the earth, 119 2 . 



Eocene, 1749. 



Erie county, hydraulic cement, 156 5 . 



Feldspars, 1209, 121*. 



Fertilizers, 2236, 2246, 227 7 . 



Field work, 2383-40?. 



Fishes, 113 7 , 141 8 ; of Carhoniferons 

 system, 170 3 ; of Cretaceous period, 

 174 6 ; of Devonian system, 158 5 , 165 8 j 

 of Jurassic period, 172 8 ; of Lower 

 Silurian system, 150 6 ; of Mesozoic 

 time, 170 7 ; of Tertiary period, 175 7 ; 

 of Triassic period, 171 5 , 172 3 . 



Flagstone, 152 7 , 164*, 186*. 



Flint, 1736. 



Fluorite, localities producing, 234 4 . 



Ford, S. W., geologic studies, 142 5 . 



Formations, geologic, of New York, 

 137-79 ; trinity of, 127 5 . 



Fossil ores, 219 8 -206. 



Fossils, bibliography, 240 2 ; disintegra- 

 tion, 239 i -40 7 ; early mentiou of, 

 113 7 -14 6 ; of Acadiau group, 143 2 ; in 

 Black Hirer limestone, 148 5 ; of Cam- 

 brian system, 142 4 ; of Carboniferous 

 system, 170 1 ; in Catskill group, 165 5 ; 

 in Cauda galli grit, 159 7 ; in Cham- 

 plain valley clays, 212 2 ; in Clinton 

 group, 153 4 ; of coal measures, 169 1 ; 

 of Devonian system, 165 7 ; of Georgian 

 group, 143 3 ; in Lower Silurian sys- 

 tem, 150 5 ; in Niagara limestone, 

 201 3 ; in Oriskany sandstone, 159 3 ; 

 in Potsdam group, 1429 ; f Quater- 

 nary system, 178 6 -79*; of Triassic 

 system, 171 5 ; of Upper Silurian sys- 

 tem, 158 2 . See also Palaeontology. 



Franklin county, sandstone, 145 2 . 

 Freestone, 186 3 , 1956. 



Gabbro, 183 2 . 



Galenite, 122 8 ; localities producing, 



2326. 

 Gardeau shale, 164 3 . 

 Garnet, 1226, 2259. 

 Gebhard, John, jr, curator of museum, 



2436. 

 Geikie, Sir Archibald, Text-booh of 

 geology, 237 7 . 



Genesee river falls, 154 7 . 



Genesee rock, 163 8 -64 1 . 



Genesee valley, salt wells, 155 6 , 224 4 . 



Geologic formations, of New York, 

 137-79. 



Geologic map of New York, 237 5 . 



Geologic series, 126 4 , 136 5 . 



Geologic strata, see Strata. 



Geologic time, classification, 135-36 



Geology, defined, 113 3 ; history as a 

 science, 113 3 -14 7 ; beginning of 

 geologic history, 114 8 ; historic, 

 126 3 -27 9 . See also Dynamic geology. 



Georgian group, 143 2 -44 1 . 



Glacial drift, 203 3 -4 3 . 



Glaciers, 176 2 . 



Glass sand, 225*. 



Gneiss, 1259, 138 8 , 183 2 , 205 3 ; constitu- 

 ents, 122 2 ; exposures, 140 7 . 



Gold, ore, 122 7 ; mining in New York, 

 2316. 



Goniatite limestone, 162 8 . 



Gould collection of shells, 244 2 . 



Granite, 125 2 , 138 8 , ISl 4 ^ 4 , 2049-5 3 , 

 205 6 ; constituents, 1215, 122 2 . 



Granitic rocks, 181*-849. 



Graphite, 122 7 , 224 8 . 



Gravel, 120 5 , 125 4 ; as road metal, 208 2 . 



Greene county, lower Helderberg 

 group, 157 8 . 



Groups, 136 6 . 



Guide to geology of New York and to the 

 state geological cabinet, by Ledyard 

 Lincklaen, 1096-10 3 . 



Gypsum, 122 7 , 125 6 , 155 7 , 2246. 



