854 DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



Page. 



Schistosity, origin of 152 



.peripheral 267,292 



Schizophoria striatula Ill 



Schofield, S. J 139, 226, 241, 250 



Secondary origin of granite. 475 



Segregations in magma 349, 437, 539 



Selkirk monocline ' 601 



■ mountain system 22,34 



, stratigraphy of 141-159,257-280 



series, correlation with 191, 194 



Valley 26, 600 



Sehvyn, A. R. C. 32,44 



Seminula 511 



Serpentine 385 



Serpula 488 



Shackanite (analcitic rhomb-porphyry) 411, 415, 571, 790 



Shaler, N. S * 640 



Shand, S. J 251 



Shasta geosynclinal 565 



Shasta-Chico series 489 



Shatter-belt, magmatic 297, 299, 349, 728, 735 



Sheppard formation 77 



— , columnar section of 77 



granite 354,784,787 



Shifts, horizontal ' 279,570 



Shonkin Sag, Montana, magmatic differentiation at. 251, 772 



Shonkinitic type , 345 



Shore-lines, zone of 196ff., 567 



Shoshonose ! 314, 327 



Shuswap series 194 



Shutt, F. T 652 



Sill, composite 396 



, rhomb-porphyry 410 



Sills associated with Purcell Lava 2141. 



, Hozomeen range 492 



, Kettle river 410 



, Moyie 221ff., 761, 770, 781 



, Purcell -. . 221ft. 



, significance of thick 255 



, Skagit 522 



Similkameen batholith 427, 455, 571, 772' 



, compared with Kruger alkaline body 458 



Siyeh formation, Clarke and Lewis ranges 71 



— ■ ■ , columnar section of 72 



■ formation, Galton series 104 



, columnar section of.. .„ 104 



limestone, identical with Blackfoot 183 



Skagit valley, origin of 600,620 



composite batholith 7,544,601 



harzburgite 531 



range 41 



, correlation in 545 



, formations of 507 



, structure of 544 



volcanic formation 507, 52& 



age cf 531 



Slesse diorite 507,532 



— — , analysis of 533 



Slocan mountains 35 



Smelter granite 378,381 



Smith, G. O 1, 5, 41, 433, 469, 479, 502, 519, 555, 620, 624ff., 781 



