554 



INDEX. 



Page. 



Dakota Valley glacier 393 



Dalles of Saiut Croix River, Wis 175 



Dana, J. D., cited 305 



Dawson, G. M., cited 313, 385, 398, 399 



Dawsonella meeki 453 



Dead Sea, Salinity of the 212 



Deltas, Terrace 304 



Dendritic tufa in Lake Labontan Basin .. 214,215 



Denver, Soils near, investigated 



Deposits, Saline, of Lake Lahontau 224, 230 



Sedimentary, in Lake Lahontaii 221 



Tufa, ofLakoLaLoutau 212 



Description of Heaperornis 52 



Ichthyornis 69 



Desiccation products of Lake Lahontan . . 224 



Detrital rocks of Keweenaw Series 97, 114 



, Origin of 100 



Devil's Track River, Minn 130 



Devonian fossils in the Mackenzie River 



Basin 265 



rocks of Eureka District 264 



Diabase-porphyrite of Keweenaw Series 



described 108 



Diabases of Keweeuaw Series described. . 97 



Diamond Mountains, Geology of 251 



Peak, Altitudeof 246 



quartzite 268 



Range, Position of 245 



Valley 245 



Dicellocephalus angustifrons 259 



lilobatus 259 



expansui 258 



finalis 261 



flabellifer 261 



marica 259 



nasutus 258,259 



osceola 259 



quadriceps 257, 258 



richmondensis 258 



Dikes in tbe Keeweenaw Series 124 



of Auimikie group on Pigeon Point, 



Minn 158 



ThunderBay 158 



Director, Report of the xv 



Dog Lake, Canada 168 



Dome, tufa, Section of a, in Lake Lahontan 



Basin (Fig. 50) 219 



Domes and towers of tufa built by Lake 



Lahontau 216 



Douglas County, Wis 137, 155, 156, 174, 176, 179 



, Copper of 187 



Douglas lloughton River, Keweenaw 



Point 151,153 



Drift, Classification of- 296 



features of eastern Dakota 393 



, shore, Nature of 207 



Driftkss area 318 



Duluth beds of Keweenaw Series 134 



, Minn., Coarse gabbro of 142 



, Rocks of 105, 110, 114, 119, 124, 134, 142, 175, 185 



Dwight, W. B., cited 365 



Eagle Harbor, Keweenaw Point, Mich.. 176 



Mountain, Minn., Augite-syenite of ... 120 



Salt Works, Nev., Analysis of brine 



from .. 227 



Page. 

 Eagle Salt Works, Nev., description of the 226 



, Profile of reservoir and vats at 227 



, Yield of 227 



East Humboldt Mountains 245 



shore of Lake Superior, Crystalline 



fohistsof 171 



, Keweenawan rocks of 140 



Eastern sandstone between Bete Griso 



Bay and Lake Agogobic 147 



, Different views as to its relation to 



the Keweenaw Series 152 



east of Keweenaw Bay 147 



, Former supposed Triassic ago of . . 148 



, Geologic position of 147 



of LakeSupeiior 136,147 



on Keweenaw Point 147 



, Phenomena of contact of, with 



Keweenawau rocks 148 



, Quarry in, on the Torch Lake Rail- 

 road 151 



, Relations of, to Keweenawan rocks 152 



Series 147 



Embankments, shore, Ideal plat illustrat- 

 ing (Fig. 46) 207 



, The formation of 206 



Emmons, S. F., Administrative report of. . 22 



, cited ...'. 257,265 



, Work of xvi 



Englacial till denned 397 



Eolian deposits 304 



Erie glacier, Western Moraine of 330 



Eskers defined 299 



Euomphalus subrugosus 269 



Eureka district, Cambrian rocks of 254 



, Carboniferous rocks of 268 



, Climateof 246 



, Devonian rocks of 264 



, Diamond Peak, Quartzito of 253, 268 



, Eureka quartzito of 253, 262 



, Hamburg limestone of 253, 255 



, shale of 253,255 



, Geologic work in xvi 



, Geologic sections in 288 



, Granite of 273 



, Granite porphyry of 274 



, Lone Mount limestone of 253, 262 



, Lower coal-measures of 253, 268 



, Mode of occurrence of volcanic rocks 



in 280 



, Nevada limestone of 253,264 



, Paleozoic formations of 248 



, section of 251, 253 



, Pogonip limestone of 253, 200 



, Position of 244 



, Pro-Tertiary igneous rocks of 273 



, Prospect Mountain limestone of 253 



, quartzite of 253 



, Quartz porphyry 273 



, Relative age of volcanic rocks of ... 281 



, Secret Canon shale of 2;>3, 255 



, Silurian rocks of 2CO 



- , Tertiary and post-Tertiary volcanic 



rocksof 277 



, Upper coal-measures of 253, 270 



, Weber conglomerate of 253, 270 



