INDEX. 215 



Page. 



Mountains, Wasatch 30 31 



Mount Ellsworth , 4i . 20 



Naticopsis rcmox . ^ 10<J 



Neritina ? ? Powelli <. 110 



vol vilineata * , ,-. , 131 



No w berry, Dr. J. S., on the Plateau Province 3 



Nomenclature of formations . 38 



Odontobasis buccinoidea 124 



Ostrea (Alectryouia) procumbens . 93 



sanniouis 112 



Paleontology . . 4 ?4 



Park, Brown's, Structure of 4 t 208 



Mountains >. .. 26 



defined ^ , . . ,. . 5 



Province ..* . . 30 



,Orographic structure of 25 



Parks, The 26 



Peaks, Axial . 4 , 13 



, Flanking _ t 13 



Petrology as related to disintegration . .;. ..;_.... 182 



Phorua exoneratus ...*..... 134 



Pbysa Kauabeusis , 119 



Pilot Butte, Wyoming , .**....* 18,25 



Pisidiuiu saginatuui ..*...... 128 



Plauorbis (Bathyomphalus) Kanabensis 119 



Plateau Province ....... ^9 



defined . t 3 



, Dr. J. S. Nswberry on 3 



, Fossils of 74 



, Orographic structure of 25 



, Prof. W. P. Blake on 3 



, Sedimentary groups of... 37 



, Summary of history of 32 



Plateaus, Inclined 11 



, Subsidiary 12 



Plateau, Yampa, Structure of 202 



PlatteKiver '. 194 



Plicatula hydrotheca 113 



Po Canon district 146 



Point of Rocks Group, Fossils of 99 



, relations 6, 155, 164 



, Section of 15(i, 158 



, type localities 47 



Province, Basin 23,29,67 



, Park 7,26,30 



, Plateau 25,29 



defined 3 



Provinces, Geological, Characteristics of 7 



, defined 3,7 



, Groups of sedimentary rocks of 8 



, separation indefinite 30 



, Summary of history of 32 



, Tj pes of orographic structure of 9 



Pupa arenula 131 



Pupa iucolata 130 



