INDEX. 



553 



Page. 

 Chester, Prof. A. H., on the Vennillion 



Lake region of Minnesota 169 



Chief geologic assistants, Monographs 



nearly completed by the xv 



, Work of the xv 



Chippewa glacier 381 



Chonet es granulifera 269 



scitula 266 



verneuiliana 269 



Clark, F. A., Services performed by 243 



Classification of toothed birds 86 



Cliff Hills, Augite-andesite of 282 



Climate of the Great Basin 196, 232 



, Quaternary, recorded by Lake Lahontan 230 



Clinton Point, Wis 155, 175 



Cloquet River, Minn 126, 142 



Coarse gabbro of Keweenaw Series, Ori- 

 gin of 125 



Coast moraines 379 



Colorado Plateau region, Map of the xv 



, Topographic material pertaining 



to the xvi 



unrivaled for the study of impor- 

 tant problems xv 



. Work in the xv, xvi 



, Work in xvi 



Columna teres 454 



vermicula . 454 



Comb's Mountain, Devonian formations of 266 

 Commingling of Carboniferous fauna in 



N. Mex., Col., and Utah 269 



Comparison of Hesperornis with Archceop- 



teryx 83 



Ichthyornis with Archceopteryx 83 



Conchifera 420 



Conglomerates of Keweenaw Series de- 

 scribed 98 



Conocephalites bellus 258 



breviceps 259 



dissimilis 258 



laticeps 258 



linnarssoni 258 



pernasutus 258 



prospectensis 257 



Conrad, T. A., Description of fossil Uniones 



by 479 



Cook, G.H., cited 302,345 



Copper-bearing rocks of Lake Superior, by 



R.D.Irving 89 



, Former studies of 93 



, Obstacles to the study of. 93 



Copper deposits of Lake Superior 180 



Ontonagou region, Mich 182 



1 Origin of 184 



- Harbor, Keweenaw Point 131, 176 



in Saint Croix Valley, Wis 187 



in Wisconsin 187 



mining in Michigan 186 



on Isle Royale 188 



the Minnesota coast of Lake Superior 187 



Range, Douglas County, "Wis 156 



, South, Mich 122 



, Rules to guide explorers for, in Lake 



Superior region 185 



Corbicula augheyi 438 



Page. 



Corbicula berthoudi 438 



cleburni 437 



cytheriformis 437 



nebrascensis 437 



obesa 437 



occidentalis 437 



subelliptica 437 



umbonella 438 



(Leptesthes) cardinceformis 437 



fracta 439 



macropistha 437 



planumbona 437 



(Veloritina) durkeei 437 



Corbula crassatteliformis 442 



englemanni 442 



mactriformis 442 



perundata 442 



pyriformis 441 



subtrigonalis 442 



tropidophora 442 



undifera 442 



var. subundifera 442 



Corbulidse 441 



Cordaites in White Pine shale 267 



Coteau des prairies 389 



du Missouri 394 



Crepicephalus affinis 259, 261 



gallatinensis 258, 259, 261 



granulosus 259,261 



larviceps 258 



occidentalis 258 



aimilis .' 258 



simulatus 259 



unisulcatus 258, 259, 261 



Cretaceous birds ; aquatic 85 



Cross River, Minn 143 



Crystalline schists in the Lake Superior 



region of doubtful geological posi- 

 tion 168 



of Bois Blanc Lake, Minn 169 



Dog Lake, Canada 168 



east shore of Lake Superior 171 



Rainy Lake 169 



Saganaga Lake 169 



the Marquette and Menominee re- 

 gions, Mich 166 



Wisconsin River Valley 171 



Vennillion Lake, Minn 162, 169 



Cupriferous amygdaloids of the Keweo- 



naw Series 181 



conglomerate s of the Keweenaw Series - 1 80 



veins of the Keweenaw Series 183 



Current River, Thunder Bay, Canada 159 



Currents, shore, Action of 207, 208 



Curtis.J. S., Work of. 



Curve exhibiting the rise and fall of Lake 



Lahontan (Fig. 51) 221 



Curves exhibiting the oscillations of La- 

 hontan climate (Figs. 55, 56) 231 



Cyrena carletoni 436 



dakotensis 436 



Cyrenidse 435 



Dacite, Eureka District 277, 280, 282, 284 



Dakota, eastern, Topographic features of . 393 



, Moraines of 394 



