INDEX. 



5G1 



Page. 



Pisidiidao 440 



Pisidium saginatum 440 



Plains marginal to moraiuo. . .303, 321, 324, 329, 340, 



355, 378 



Planorbis cequalis 448 



( Bathyomphalus) amplexus 447 



kanabensis 447 



planoconvexus 447 



drratus 448 



convolutus 447 



(Gyraulus) militaris 447 



leidyi 448 



lunata 448 



ncbrascensis 448 



utahensis 447 



van spectabilis 447 



veternus 446 



-Bvetustus '. 448 



Plant impressions in White Pino shalo. . . 266 



Playalakos 198 



(Plcurolvmnced) tenuicostata 445 



Pleurotomaria sp. ? 270 



Pogonip limestone 2CO 



Pointe aux Minos, Lake Superior 177 



Pokegoma Falls, Minn 161 



, , Animikio Group at 161 



, , Maguetitie quartzite of 162 



Polypora sp. ? 270 



Poplar River, Minn 126,144 



, , Felsitic porphyries of 144 



Porcupine Mountains, Mich 93, 1 80 



, , Faults in 179 



, _ Felsiteof 114,139 



, , Relation of the, to Koweenawau 



synclinal 175, 186 



, , Structure of 130,139 



, , Topography of 123 



Portage Lake, Mich 121, 123, 150, 151, 180, 181 



Post-Lahontan orographic movements 232, 233 



Potato River, Wis 131 



Potsdam sandstone of the Mississippi 



Valley 156 



Power of flight of birds 87 



Preliminary paper on the terminal mo- 

 raine, by Prof. T. C. Chamberlin 291 



Productus hallianus 266 



prattenianus 269 



punctatus 270 



semircticulatus 268 



shtimardianus 266 



subaculeatus 266 



Profile of terrace and sea cliff (Fig. 45) ... 206 



- the Lahontan lithoid terrace (Fig. 47) 209 



Prospect Mountain limestone 254 



quartzite 254 



, Rhyolito dikes of 282 



Peak, Altitude of '. 246 



Ridge 248 



Protospongia fencstrata 258 



Prygvlifcra humerosa 460 



Pseudamygdaloids of Keweenaw Series 



described 116 



Psllophyton iu "White Pine shale 267 



Ptilodictya carbonaria 270 



serrata < ...... 270 



36 a 



Page. 



Ptychas2)is minuta 259 



Publications, Exchange of, provided for xv 



bylaw xvii 



, Preparation of 



Pumpelly, ft., referred to. 115, 117, 129, 151, 153, 178, 



181, 184 

 , Studies of the copper-bearing rocks 



of Lake Superior by 93,106, 111 



Pupa arenula ... 456 



atavuncula 456 



bigsbyi 456 



incolata 456 



vermillionensis 456 



vetuata 456 



Pupida3 455 



Quartz in basalt 280 



Quartz-porphyry, Age of 274 



, Eureka District...".. 273 



of Keweenaw Series 113 



Quartzless-porphyries of Kcweenaw Series 



described 112 



Quaternary climate recorded by Lake 



Lahontan 230 



formations, Classification of 295 



lakes of the Great Basin, Study of the. xvi 



Raer 299 



Rainfall a potent factor in any region 199 



of t h e Great Basin 1 96, 1 99 



Rainy Lake, Crystalline schists of 169 



Read, M.C., cited 341,342 



Read, Thomas J., Aid rendered by 243 



Receptaculites mammillaris . 261 



Reconnaissance, A geologic, in Nevada, 



California, and Oregon 195 



Relative age of augite - andesito and 



basalt 284 



rhyolite 284 



dacite and rhy olito 283 



rhyolite and basalt 284 



volcanic rocks of Eureka District. 281,284 



Remains of birds rare 49 



Report, Administrative, of Clarence King 3 



, , Arnold Hague 10 



, , G.K.Gilbert 14 



, , - T.C. Chamberlin 17 



, , S.F.Emmons 22 



, , G.F.Becker 24 



_, _, _L.F.Ward 26 



, , J. Howard Gore 30 



, , Gilbert Thompson 32 



Report of the Director xv 



Reptiles, Birds related to 51 



Reptilian ancestry of Hesperurnis 66 



features of Ichthyornis 79 



Rescue Canon, Rhyolite of 279, 282 



Hill, Devonian of 265 



Restoration of Hespcrornis 64 



Ichthyornis 77 



Ketzia mormoni 270 



Review of the non-marine fossil mollusca 



of North America by Dr. C. A. White. . 403, 550 

 Rhynchonella castcmca 265, 266 



eurekensis 269 



Rhyolite, Eureka District 277, 279, 281, 284, 289 



, , Distribution of 282 



