852 DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



Paqb. 



Pinus 487,813 



Columbiana „. .. S06 



Pirsson, L. V „ . .. „ 251, 313, 367, 407, 718, 772 



Planetesimal hypothesis, discussion of 696 



Planorbis 87 



Plateau, origin of Okanagan , 619 



Platycrinus 513 



Pleuromya papyracea 4S8 



Pleuropkorus 511 



Pleurotomaria „ 112 



Polypora 513 



Populus cyclophylla 487,819 



Porphyrite 369, 416, 459, 492, 541 



Potamogeton „ , 811 



Pre-Waterton beds 55 



Priest range 9, 37 



■ River terrane 6, 258-271,. 567 



— ■ — , age of 259 



, correlation of 270 



, thicknesses in 268 



Principal volcanoes 712 



Prionotropis S5 



Producta cora 116 



Productella subaculeata Ill 



Productus 116,511 



semireticulatus 511,513 



Prowersose. . . . .' 311 



Publications by author, relative to geology of the boundary 3 



Puget geosynclinal 565,571 



group 520 



Pugnax 512 



— pugnus Ill 



Pulaskite 360 



porphyry 417,571 



Pulaskose 119 



Purcell horst 601,610 



Lava, Clarke range 213 



, columnar sections of 210,219 



, Galton range 212 



■ , horizon-marker 162 



, Lewis range .. 216 



, McGillivray range 207 



, vents of 208,220,781 



Mountain system, named 30-33 



— , stratigraphy and structure of 119, 137 



-range 23,31,33 



series 47,119 



, columnar section of 120 



sills 22] 



, dominant rock of 222,787 



, variations in 225 



Trench 26 



, origin of 139, 257, 277, 279, 600 



• Trench glacier 588 



Pyrite crystals 137 



Q 



Quart/ pebbles, opalescent 150, 151, 176 



Quartzite, origin of , 124 



Queen Charlotte geosynclinal 565,570 



Quercus coriacea 487, 820 



flexuosa 487, 820 



